-SimGrid-java (3.9) stable; urgency=low
-
- -- 2013-01-30 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
-
-SimGrid-java (3.8.1) stable; urgency=low
-
- * New module: org.simgrid.trace.Trace (SimGrid trace bindings)
- Warning: all methods are visible, but only some of them are
- implemented so far. Check the source (src/jtrace.c)
- for further information.
- * New module: org.simgrid.msg.File (SimGrid File management functions)
- * New Module: org.simgrid.msg.VM (SimGrid interface to mimick IAAS clouds)
- * Change the meaning of Process.restart: now restart the process from
- the begining, like MSG_process_restart in C.
- * Add Process.setAutoRestart: handling of process restart when failed
- host comes back.
- * Add Process.getProperty, Host.getProperty, Host.getProperty: allows
- you to retrieve the properties of the processes/hosts
- * Deprecate Msg.clean(): you can just forget about it now.
- * New function Process.getCount(), that only works when compiling
- with the not yet released version 3.9 of the C library.
-
- * New context factory based on Coroutines. It mandates a modified JVM
- but then, the simulations run about five times faster, and there is
- no limit to the amount of processes (beside of the available memory).
-
- -- 2012-12-04 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
-
-SimGrid-java (3.7.1) stable; urgency=low
-
- The "Java aint got to be bloated and slow" release
-
- Major cleanups:
- * Various internal cleanups and performance improvement
- Simulations are expected to run up to twice faster or so
- * Make Process.kill(process) an instance method, not a static one
- * User processes are not java.lang.Thread subclasses.
- This breaks the compatibility (sorry), but previous API was
- brain-dead, making it impossible to have non-trivial
- initializations in the process constructor.
- * Require a full constructor per Process sub-class.
- Kinda breaks the compatibility (sorry), but this allows a much more
- efficient way to launch the processes at simulation startup.
- * Do not embeed our version of semaphores, java 1.5 can be considered
- as sufficiently prevalent for us to not dupplicate its features.
- * Lot of bug fixes
-
- Extend the API:
- * Add examples for almost every part of the API
- We spotted and fixed a lot of bugs in the process
-
- * New module: asynchronous communication API
- * New function: Process.sleep()
- It takes milliseconds as argument, just as java.lang.Thread.sleep()
- * New module: org.simgrid.msg.Mutex (SimGrid mutexes)
- * New module: org.simgrid.msg.RngStream (RngStreams random generators)
-
- -- 2012-06-12 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
-
-SimGrid-java (1.0 (3.6) unstable; urgency=low
-
- * Initial release.
- * Split of every thing from simgrid v3.5 into a separate package.
-
- -- 2011-10-05 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
+SimGrid (3.10) NOT RELEASED; urgency=low
+
+ XBT:
+ * Our own implementation of getline is renamed xbt_getline, and gets
+ used even if the OS provide a getline(). This should reduce the
+ configuration complexity by using the same code on all platforms.
+ * new xbt_cfg_elm_boolean type
+ * Allow to disable SimGrid cleanups at exit from command line option.
+ There are situations where one may want a simulation to end with an exit.
+ Unfortunately, calling exit may cause SimGrid to segfault, which is quite
+ annoying when scripting around the simulator. Adding a
+ --cfg=clean_atexit:yes allows to circumvent this issue.
+
+ Java:
+ * Reintegrate Java to the main archive as desynchronizing these
+ package is not acceptable anymore (Java is now considered stable)
+ * Add explicit synchronization facilities through semaphores
+ * Bugfix: Task.setDataSize() only changed the C world, not the value
+ cached in the Java world
+
+ MSG:
+ * Dramatically change the way files are handled. API and internals changed, but
+ this part of MSG was not considered as production grade either.
+ * Add explicit synchronization facilities through semaphores
+ * Add a new function MSG_host_get_process_list()
+
+ SMPI:
+ * SMPI is now included directly in the libsimgrid as the windows
+ linker doesn't force us on splitting it anymore.
+ * Improvements of the SMPI replay tool:
+ - Most of the collective communications are now rooted in the same process as
+ in the original application.
+ - Traces now rely on the same MPI data type as the application (MPI_BYTE was
+ used until now). Multiple data types can now be used in a trace.
+ - The replay tool now supports traces produce either by TAU or a modified
+ version of MPE.
+ - Bug Fix: the compute part of the reduce action is now taken into account.
+ * smpirun generates the hostfile if needed (with given hostcount and platform)
+ * Integration of more than 100 STAR-MPI, MPICH, OpenMPI collective algorithms
+ - allows to select one in particular with --cfg=smpi/coll_name:algorithm
+ - allows to use the decision logic of OpenMPI(1.7) or MPICH(3.0.4) by setting
+ --cfg=smpi/coll_selector:(mpich/ompi)
+ * Support for new functions : MPI_Issend, MPI_Ssend, Commutative operations in
+ Reduce
+ * Add a --cfg:tracing/smpi/internals option, to trace internal communications
+ happening inside a collective SMPI call.
+ * Fix the behavior of complex data types handling
+ * replace MPICH-1 test suite by the one from MPICH 3.0.4
+ * Add all missing Fortran bindings, SMPI should work with Fortran 90
+ (no privatization of global variables yet)
+
+ SimDag:
+ * Allow to change SimGrid configuration (see --help) within the code
+ thanks to SD_config() as it can be done in MSG.
+ * Add a new function SD_task_set_amount() upon user request.
+
+ PLATFORM:
+ * Handle units for values (10ms, 10kiloflops, 10Bps, 1GB, ...)
+ * Remove rule based routing (no more PCRE dependency)
+ * Add a limiter_link option to cluster tag, to specify a maximum reachable
+ bandwidth in fullduplex mode when it is less than twice the nominal bandwidth.
+ * Add a loopback_bw and loopback_lat options to cluster tag.
+ * Fix the peer tag that could not be mixed with other AS within a Vivaldi
+ routing. Now peers are encapsulated in an AS and have their own private
+ router but this is transparent.
+
+-- $date Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
+
+SimGrid (3.9) stable; urgency=low
+
+ The Grasgory release: GRAS is really dead now.
+
+ * Complete overhaul of the internal host structures scheme.
+
+ GRAS:
+ * If you use GRAS, you should stay at SimGrid 3.5 (at most) since it
+ was considered as experimental and badly maintained since then.
+ * Keeping it was thus a trap to our potential users, that could take
+ it instead of MSG or SMPI by mistake despite is pity state.
+ * GRAS seems to have very few users (if any), and no one volunteered
+ to maintain it further. It also induces a lot of XBT code (for
+ portability sake), that must be maintained too.
+ * For all these reasons, we killed GRAS. If someone wants to revive it
+ in the future, don't cry, our git history still remembers of GRAS.
+
+ Documentation:
+ * Major overhaul. Merge our documentation again as time proved that
+ splitting it was really not helping our users.
+ * Further improve the developer documentation to help newcomers
+ hacking on SimGrid itself. The user documentation (and in
+ particular, the beginner documentation) is still in a sorry state.
+
+ SMPI:
+ * Now works on Windows too!
+ * Much more extensive test suite, from MPICH
+
+ SIMDAG:
+ * Add a new loader (SD_PTG_dotload) that creates a parallel task graph
+ (i.e., a DAG whose nodes are parallel tasks) from a dot file. Creates a
+ dynar of SD_TASK_COMP_PAR_AMDAHL and SD_TASK_COMM_MXN_1D_BLOCK tasks.
+ * Bug fix: let task be scheduled when the last dependency to be solved is
+ a control dependency.
+ * Remove SD_load_environment_script function.
+ Use the C sg_platf function if you want to declare a platform
+ programmatically.
+
+ MSG:
+ * New function: MSG_process_get_number()
+ * Old function documented: MSG_config()
+ * Remove MSG_load_platform_script function
+ Use the C sg_platf function if you want to declare a platform
+ programmatically.
+
+ SURF:
+ * Change the default value of the TCP_gamma constant (maximal size of TCP
+ congestion window) to a more realistic 4MiB value. If you notice changes in
+ your simulation results, you can fall back to the previous 20k tiny window
+ by adding --cfg=network/TCP_gamma:20000 on command line.
+ * (Hopefully) fix a bug wrt periodic availability and state traces
+ * Bug fix: use default values at start when first event in availability/state
+ trace is not at time 0.
+
+ PLATFORM:
+ * remove the "new_" part of function name sg_platf_new_trace_connect
+ (resulting in sg_platf_trace_connect), since it does not create
+ anything new
+
+ XBT:
+ * Kill synchronized dynars, and xbt_dynar_dopar(). We cannot think of a
+ use case where it's really mandatory, and maintaining it was a pain in
+ our code base.
+ * New: xbt_fifo_search(), search an item with a user-provided
+ comparison function instead of dumb pointer comparison.
+
+ LUA:
+ * Fix the lua deployment:
+ Use `simgrid.init_application()` before deployment instead of
+ `simgrid.msg_register_application()` after.
+
+ TRACING:
+ * Transfer the tracing files into the corresponding modules.
+
+ -- Tue Feb 5 11:31:43 CET 2013 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
+
+SimGrid (3.8.1) stable; urgency=low
+
+ The "we are told that some people want to also *install* the simgrid
+ framework" release.
+
+ * Add missing file "tesh.1" to the archive.
+
+ -- Sat Oct 27 16:12:11 CEST 2012 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
+
+SimGrid (3.8) stable; urgency=low
+
+ The Psssshiiiit release: SimGrid jumps into the Cloud.
+
+ MSG:
+ * Add an experimental interface to manipulate VMs. They are mainly
+ process groups with very few intrinsic semantic, but they should
+ allow you to build the semantic you want easily.
+ * New function: MSG_host_set_property_value()
+ * New function: MSG_process_on_exit(). To clean memory in all cases.
+ * Bug fixes that made the host (and link) failures unusable.
+ * Add a way to auto-restart process when the host in which they are
+ executing comes back (ON_FAILURE="RESTART" on deployment file,
+ MSG_process_auto_restart_set).
+ * Use the "msg_" prefix for all datatypes (instead of m_, msg_ and MSG_),
+ please stop using the old ones, they are DEPRECATED.
+
+ * Deprecate functions MSG_global_init() / MSG_global_init_args()
+ Please use MSG_init() instead. (reducing the amount of entry
+ points in the library helps us).
+ * Make it impossible to link against the wrong version of the lib
+ * Deprecate MSG_clean(). No need to call it anymore.
+ * Function MSG_get_host_number() is not deprecated anymore.
+
+ Documentation:
+ * Split the doc into a user guide and a reference guide.
+ * Start a developper guide to help people hacking on SimGrid.
+
+ Cmake:
+ * Enable tracing by default. This modules rocks you should use it.
+ * Remove option custom_flags. Now use environment variables CFLAGS
+ and LDFLAGS.
+ * Use default cmake things to detect lua instead of home grown ones.
+ * New option "enable_mallocators" to disable mallocators, for debugging
+ purpose ("on" by default).
+
+ Simix:
+ * Bug fixes around the resource failures: don't let the processes
+ survive the host they are running onto.
+ * Add an interface to auto-restart processes when the host in which they are
+ executing comes back.
+ * Ensures that SIMIX_clean is called automatically. It's not part of
+ the public interface anymore (bindings should be updated).
+
+ SimDag:
+ * Bug fix for when SD_Simulate is called with a positive value: be careful
+ when comparing doubles. Sometimes they are different for non significant
+ digits only.
+ * New types of typed tasks. SD_TASK_COMP_PAR_AMDAHL represents a
+ parallel task whose initial work is distributed among host according
+ to the Amdahl's law. Such tasks are created with a parameter alpha
+ that corresponds to the non-parallelizable part of the computation.
+ SD_TASK_COMM_PAR_MXN_1D_BLOCK represents a complex data redistribution
+ between two sets of workstations assuming a 1D block distribution (each
+ workstation owns a similar share of data) on both sides.
+
+ These tasks can be scheduled with SD_task_schedulel or SD_task_schedulev.
+ Data redistribution will be automatically scheduled once parent and child
+ are both scheduled. The filling of computation_amount and
+ communication_amount structures is now done seamlessly thanks to the chosen
+ assumptions.
+ * New function SD_workstation_dump to display various information
+ * New function SD_task_set_rate to throttle the bandwidth allowed to be used
+ by a SD_TASK_COMM_E2E typed task. This rate depends on both the nominal
+ bandwidth on the route onto which the task is scheduled and the amount of
+ data to transfer.
+ To divide the nominal bandwidth by 2, the rate then has to be :
+ rate = bandwidth/(2*amount)
+ * Compute tasks that have failed can now be rescheduled and executed again
+ (from their beginning)
+ * Increasing source code coverage (src/simdag is now covered at 95.8%
+ on average)
+
+ SMPI:
+ * Re-implement time-independent trace replay using SMPI (at the
+ smpi_smp_* level) instead of MSG. This should replace
+ examples/msg/actions/actions.c
+ * Implement support of MPI Datatypes (vectors, hvectors, indexed,
+ hindexed and structs)
+ * Implement the exchange of non-contiguous data.
+ [Khalid Hasanov & Jean-Noel Quintin] Thanks for the patch, guys.
+ * Correct behavior of smpi/sender_gap and set its default value to 0
+ * Add option to asynchronously send small messages to allow better
+ simulation of pt2pt communications. --cfg=smpi/async_small_threshold:value
+ specifies the size in bytes under which messages will be asynchronously sent.
+ * Add support of MPI_Iprobe, MPI_Probe, MPI_Testall, MPI_Wtick functions
+ * SMPI now handles more MPI specific values in input. Closes [#14389] and [#14388]
+
+ SimGrid:
+ * New C interface to define a platform: XML is now optional.
+ For more info, please check include/simgrid/platf.h.
+ * New interface to define random platforms from the C:
+ For more info, please check include/simgrid/platf_generator.h and
+ examples/msg/masterslave/masterslave_platfgen.c
+ * Export a sg_cmdline dynar containing all the arguments we got from
+ the command line.
+
+ TRACE:
+ * Two new tracing options for adding comments to trace file so you
+ can track your experiments (see --help-tracing for details).
+ * New option to generate a impoverished trace file (--cfg=tracing/basic:1)
+ * Adding the SimGrid version that generated the trace file as a comment.
+ * Instrumenting other MSG functions (MSG_task_isend_with_matching and MSG_task_dsend)
+ * Fix to avoid key clashes on Paje links
+ * Other minor fixes related to the Paje specification
+
+ XBT:
+ * Functions xbt_dict_hash() and xbt_dict_hash_ext() are made public,
+ and renamed to xbt_str_hash() and xbt_str_hash_ext().
+ * New function: xbt_os_timer_resume() to restart a timer w/o resetting it.
+ * Greatly improve the robustness of mmalloc to user errors (such as
+ using an area after freeing it, or freeing it twice)
+
+ -- Thu Oct 25 17:30:06 CEST 2012 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
+
+SimGrid (3.7.1) stable; urgency=low
+
+ MSG:
+ * Restore the prototype of MSG_process_create_with_environment() to
+ the pre-3.7 situation by removing the kill_time argument.
+ * Add a MSG_process_set_kill_time() function instead.
+
+ SURF:
+ * Fix weird behaviors when dealing with parallel tasks.
+
+ WINDOWS:
+ * Simgrid is now built as a dll.
+ * Simgrid-java now works on Windows.
+ * Simgrid-Java is now included into Windows package.
+
+ MacOS:
+ * First pre-build package for MacOSX.
+
+ Build System:
+ * Fix compilation when using MSG_USE_DEPRECATED.
+ * Fix some compilation issues on Macs and Windows.
+ * Reduce the number of failing tests on exotic systems, like Debian/Hurd.
+ * Environment variables CFLAGS and LDFLAGS are now honored by cmake.
+
+ We discovered that the Lua console is broken, but we are missing the
+ manpower to fix it right now. The problem existed in 3.7 too, so we
+ are not blocking the release for that. Sorry if you depended on this
+ feature, any help would be really welcome.
+
+ -- Thu Jun 7 2012 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
+
+SimGrid (3.7) stable; urgency=low
+
+ The "spring cleanups (before the next Big Project kicks in)" release.
+
+ Models:
+ * We can specify the SMPI latency/bandwidth factor with command line
+ add --cfg=smpi/bw_factor:"threshold0:value0;...;thresholdN:valueN"
+ or add --cfg=smpi/lat_factor:"threshold0:value0;...;thresholdN:valueN"
+ You can also use the "config tag" from platform file by adding this line
+ <prop id="smpi/bw_factor" value="threshold0:value0;...;thresholdN:valueN"></prop>
+ (see "example/platforms/tag_config.xml" to use "config tag").
+ Note that the command line supersedes the platform file configuration.
+ * Change the correction factors used in LMM model, according to
+ the latest experiments described in INRIA RR-7821.
+ Accuracy should be improved this way.
+ * Use the partial invalidation optimization by default for the
+ network too. Should produce the exact same results, only faster.
+ * Major cleanup in surf to merge models and split some optimization
+ mechanisms from the core of the models. As a result you can now
+ specify which model to use (e.g., --cfg=network/model:LV08
+ --cfg=cpu/model:Cas01) and which optimization mode to use
+ (e.g., --cfg=network/optim:lazy --cfg=cpu/optim:TI).
+ Incompatible combinations should err at initialization. See
+ --help-models for the list of all models and optimization modes.
+ * The CLM03 workstation model was dropped for simplicity because it
+ used the deprecated CM02 network model. Use default instead.
+ * Rename the TCP_gamma configuration option to network/TCP_gamma
+ * Rename the coordinates configuration option to
+ network/coordinates, and document it
+ * Use now crosstraffic keyword instead of the terribly misleading
+ fullduplex keyword. It is activated by default now in the current
+ default model, use --cfg=network/crosstraffic:0 to turn it off.
+ * Ongoing refactoring the model parsing to make XML files optional
+ See include/simgrid/platf.h for details (still to be completed)
+
+ MSG:
+ * Major overhaul of the documentation. Almost instructive now :/
+ * Deprecate the use of m_channel_t mechanism like MSG_task_{get,put}
+ functions and friends. This interface was considered as
+ deprecated since over 2 years, it's time to inform our users that it is.
+ Switch to MSG_task_{send,recv} instead, or compile SimGrid command line
+ 'cmake -Dcustom_flags="-DMSG_USE_DEPRECATED" .' if you really need to
+ use these (crappy) functions in your code.
+ These functions will be removed soon. Stop using them now.
+ * Deprecate MSG_get_host_{table,number}
+ Implement MSG_hosts_as_dynar() instead.
+ * Implement MSG_processes_as_dynar() (Closes gforge #13642)
+ * Remove the public field msg_host_t->name. Use MSG_host_get_name()
+
+ Simix:
+ * Stabilize the parallel execution mode of user contexts
+ * Introduce configuration variables to control parallel execution:
+ - contexts/synchro: Synchronization mode to use when running
+ contexts in parallel (either futex, posix or busy_wait)
+ - contexts/parallel_threshold: Minimal number of user contexts
+ that must be part of a scheduling round to switch to parallel
+ execution mode (raw contexts only)
+ * Fix bugs that prevented to use suspend/resume along with
+ synchronization structures.
+ * Fix bugs in process termination that lead to invalid memory access
+ in very specific conditions.
+
+ SURF:
+ * Introduce a parallel mode for the models (controlled by surf/nthreads
+ configuration item). In our tests, running the models in parallel
+ never lead to any speedups because they are so fast that the gain
+ of computing each model in parallel does not amortizes the
+ synchronization costs, even when ultra fast futexes are used.
+ This is released anyway because YMMV.
+
+ SimDag:
+ * Performance boost by using a swag internally to compute the set of
+ tasks that are finished and should constitute the return value of
+ SD_simulate.
+
+ SMPI:
+ * Enable it by default now that it is considered rather stable.
+
+ TRACE:
+ * Documentation of the tracing functions.
+ * Performance gains when tracing categorized/uncategorized resource
+ utilization by avoiding calls to get route when updating resource
+ variables. LMM constraints are being used instead.
+ * API changed to set task categories. Use MSG_task_set_category instead
+ of TRACE_msg_set_task_category, and SD_task_set_category instead
+ of TRACE_sd_set_task_category. They only work if ENABLE_TRACING is ON.
+ * Bugfix for graphicator, routes not correctly obtained, memory leaks
+ * Examples for link user variables added (see at examples/msg/tracing/)
+ * Deprecated function TRACE_msg_set_process_category completely removed
+ * Trace header updated according to the latest Paje file format
+ * Tracing network lazy updates, no longer obligate users to use full updates
+ * --cfg=tracing/platform:1 also registers power/bandwidth variables
+ * Experimental: let user code declare/set/push/pop application states for hosts
+ * API changed to allow the manual creation of graph configuration files
+ for Triva. See TRACE_get_node_types() and TRACE_get_edge_types().
+
+ Lua:
+ * Improve the API of Lua MSG bindings, using the Lua spirit.
+ * Each simulated process now lives in its own Lua world (globals are
+ automatically duplicated). It helps writing simulators. Will allow
+ to run Splay programs within SimGrid in the future.
+ * Add a Chord example in Lua, equivalent to the MSG one.
+
+ MODEL-CHECKING:
+ * Start the implementation of a solution to express temporal
+ properties, not only local assertions. This is still an
+ experimental work in progress, stay clear from it to be safe.
+
+ XBT:
+ * Logs:
+ - Add new runtime parameters --help-logs and --help-log-categories
+ to display informations about supported logging parameters and
+ categories.
+ - Old deprecated parameters --{gras,surf,msg,simix,xbt}-log=...
+ don't exists anymore.
+ * Mallocators: allow value NULL for the reset function.
+ * Dicts:
+ - New function xbt_dict_new_homogeneous(void(*)(void*)) to
+ create homogeneous dictionaries, where all the elements share the
+ same free function. Non homogeneous dictionaries will be
+ deprecated in the next release.
+ - Dicts of scalar elements (xbt_dicti_*) are deprecated.
+ - Multi-level dictionaries are deprecated.
+ * Dynars:
+ - new function xbt_dynar_search_or_negative() that is useful when
+ you have less than 2 million elements in your dynar and don't
+ want of the extra complexity of catching exceptions when the
+ element is not found.
+ * Portability layer
+ - Make xbt_os_thread module (for thread portability) public.
+ Documentation is still to come, sorry.
+ * mmalloc module:
+ - Cleanups and simplifications to make it maintainable again.
+ - Exotic features (such as memalign and valloc) were removed.
+ - The metadata were extended and improved so that the
+ model-checker becomes able to explore and inspect the heaps.
+ - This may induce a performance drop when enable_model-checking is
+ ON in cmake (even if it's not used in the simulation), but it is
+ necessary at this point to get MC working.
+
+ Turn model-checking OFF if simulation performance matters to you.
+ Not enabling it at runtime is not enough, disable it in cmake.
+
+ -- Tue May 15 11:30:19 UTC 2012 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
+
+SimGrid (3.6.2) stable; urgency=low
+
+ The "Not coding new stuff allows to polish old things" release.
+
+ General
+ * New bindings to the NS3 packet level simulator (experimental)
+ * Use the raw (efficient) execution contexts instead of the sysv
+ (portable) ones when possible.
+ * libpcre is now mandatory in any cases since not using it led to
+ severe performance loss and possibly other issues
+ * Update the XML platforms:
+ - G5K: include the latest machine in Nancy
+ - GridPP and LCG: new platforms
+ * Documentation was partially updated, at least (more to come)
+
+ Bug fixes, cosmetics and small improvements
+ * Free terminated processes before the end of the simulation to avoid
+ exhausting the memory of users having very dynamic amount of
+ processes.
+ * Bug fix and cosmetics about canceling non-running tasks
+ * Bug fix about the dot loader's issues when using libcgraph
+
+ Portability
+ * Create an installer for windows with nsis (amd64 and win32)
+ - Add an hello world project to illustrate simgrid project creation.
+ - Embed libpcre into the Simgrid installer to avoid
+ its compilation burden
+ * The raw execution contexts should work on Apple now
+ * Port to Windows 64 bits
+ - Sysv contexts now have an implementation for this arch
+ - GRAS communication features now support this arch
+ * Drop support for borland compiler on windows
+ - this code was not maintained, and we kinda depend on gcc nowadays
+ * Fix portability issues on kfreebsd/gnu: build error about semaphores
+ * Fix portability issue on unstable ubuntu: linker became picky on
+ argument order
+
+ -- Wed Oct 5 15:51:01 CEST 2011 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
+
+SimGrid (3.6.1) stable; urgency=low
+
+ The "Oops, we broke Macs too" release
+
+ Portability
+ * Fixed contexts detection so that raw ones are used when possible
+ * On Mac, do not use Posix Ucontexts with gcc v4.[1-5] since this
+ leads to a strange error, with user code segfaulting sometimes when
+ the generated code is not perfectly aligned (which is not
+ controllable from the user side, depends on the amount of code)
+
+ XBT
+ * New macro: CATCH_ANONYMOUS, which is like CATCH(e) but without argument.
+
+ -- Mon Jun 27 13:59:03 CEST 2011 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
+
+SimGrid (3.6) stable; urgency=medium
+
+ The Summer Release, also known as the "OMG! They Killed Kenny!" version
+
+ Java and Ruby:
+ * Bindings now constitute their own package, separated from the main one.
+ Rationale: reduce our maintenance nightmare by reducing the module coupling
+ They will soon be released on their own on gforge.
+ * In the meanwhile:
+ svn co svn://scm.gforge.inria.fr/svn/simgrid/contrib/trunk/simgrid-java
+ svn co svn://scm.gforge.inria.fr/svn/simgrid/contrib/trunk/simgrid-ruby
+
+ GRAS: It is not considered as stable anymore, but experimental. Sorry.
+ * It's not quite deprecated for now because we have no replacement,
+ but it may soon become the case.
+
+ SMPI
+ * New MPI functions supported: MPI_Comm_disconnect, MPI_Comm_get_name
+ * Fortran: New user-level cache variable to store the rank of the running
+ process. This improves performance by an order of magnitude.
+ * C: New coccinelle script to automatically locate and modify global and
+ local static variables.
+ * Improved SMPI network model with a sender-side gap to account for multiple
+ parallel sends.
+
+ MSG
+ * New function MSG_comm_get_status(). MSG_comm_test() and MSG_comm_testany()
+ only say if a communication is finished, no matter whether it succeeded or
+ failed. You can call MSG_comm_get_status() to know the status of a finished
+ communication.
+ * New function MSG_task_dsend() to send a task and detach it. When a
+ communication is detached, you are never notified of its success or failure
+ and the memory is released automatically once it is finished. This function
+ is useful when you don't care about the end nor the success of a
+ communication.
+ * Change the prototypes of action replay. Sorry for inconvenience,
+ but this is really more efficient this way (and to adapt your code,
+ you just have to fix the initialization, that shouldn't be too long)
+ * Kill the braindead MSG_task_refcount_dec() function. I guess nobody
+ ever managed to do anything useful with it.
+ * New function MSG_comm_testany(). Similarly to MSG_comm_waitany(), it
+ takes a dynar of communications. It returns immediately and gives the
+ index of a finished communication (if any).
+ * New example: a basic implementation of the Chord P2P algorithm.
+
+ SURF
+ * New model for multi-core CPUs. You can now use the core attribute to
+ precise the number of cores of a host. This is a basic model. Every
+ process running on the host receives at most the power provided in
+ the DTD (throughput<=power). Total throughput of process cannot exceed
+ power * num_cores.
+ * New peer tag. This peer tag creates a tiny AS comprising a host and a
+ router linked by an up-link and a down-link (possibly asymmetrical).
+ This kind of pattern allows to easily build last-mile model style platforms.
+ Aggregating such patterns in a rule-based AS is thus the technique of
+ choice for modeling large peer-to-peer/volunteer computing/cloud platforms.
+ * New model for Vivaldi routing. We transformed the Vivaldi network model
+ into a Vivaldi routing model (based on the rule-based model). This allows to
+ combine Vivaldi based latencies with last-mile platforms.
+
+ SIMIX
+ * Added a check for NaN of IEEE754 infinite in the double entries of
+ the smx_user.c file
+ * Introduce a new context factory "raw", highly inspirated from the
+ ucontext factory, but using manually crafted functions in assembly to
+ do the work in an efficient manner.
+ * Allow to change the used context factory at run time, not only at
+ compilation time. Use --cfg=contexts/factory:raw for maximal speed.
+ * Add an option --cfg=contexts/stacksize:N to set the stack size of the user
+ contexts at runtime (only with raw contexts or ucontexts).
+ * Completely rewrote this module to allow parallel execution of user
+ processes. Use --cfg=contexts/nthreads:N to execute user processes
+ with N parallel threads (the default is 1, meaning no parallelism).
+ * Allow to decide dynamically between sequential and parallel modes.
+ When nthreads > 1, you can use --cfg=contexts/threshold:P to run the user
+ processes in parallel only when their number is greater than or equal to P
+ (the default is 2).
+ * Added a check for NaN of IEEE754 infinite in the double entries of
+ the smx_user.c file
+
+ XBT
+ * New command line option: if you pass --cfg=verbose-exit:0, SimGrid
+ won't output the state of processes when interrupted with Ctrl-C
+ * Add a new function xbt_dynar_to_array that transforms a dynar into a
+ NULL-terminated array. This may solve backward compatibility issues
+ due to the change to return type of SD_simulate. See also:
+ http://lists.gforge.inria.fr/pipermail/simgrid-user/2010-December/002206.html
+ * Add new macros with variable number of arguments.
+ - in xbt/log.h: XBT_DEBUG, XBT_VERB, XBT_INFO, etc.
+ - in xbt/asserts.h: xbt_assert
+ - in xbt/cunit.h: xbt_test_{add,fail,assert,log}
+ - in xbt/ex.h: THROWF and RETHROWF.
+ Define XBT_USE_DEPRECATED if you want to use the old numbered macros like
+ INFO1, INFO2, etc.
+ * Change xbt_die() to accept a format string with arguments, just like printf.
+ * New data structure: xbt_lib_t, like a dict but more general and with better
+ memory handling.
+
+ INSTR
+ * New configuration options
+ Options triva/categorized and triva/uncategorized can be used to generate
+ graph configuration files for Triva visualization tool.
+ * Configuration option tracing/platform is renamed to tracing/categorized
+ * XBT logging makes tracing error checks easier, new root log hierarchy: instr
+ * New TRACE_user_link_variable interface:
+ User provides the name of the link and the tracing variable to attach to it
+ * the declaration of tracing categories must be done after the environment
+ creation
+ * simpler tracing interface, just one way to declare categories
+ TRACE_category or TRACE_category_with_color, it is up to you
+ * links in the trace file are again identified by their names
+ * trace contains the full platform hierarchy exactly as declared using the ASes
+ * Options tracing/msg/[task|process]:1 groups the process by hosts
+ for both cases, tasks and processes must have names that are unique during the simulation
+ these options generate traces that are suited to gantt-charts, such as the space-time view of Paje
+ * The experimental option tracing/msg/volume is deprecated
+ its functionality may be reincorporated if needed
+ * Buffering
+ The tracing generates a trace file with unordered timestamped events,
+ because of the way the core simulator (surf) works. A script available
+ at the tools directory (fix-paje-trace.sh) can be used to put the events
+ in order. We have changed the tracing so it can generate ordered timestamped
+ events in the final trace, but depending on the simulator (and how much time
+ is simulated) that can lead to a huge memory utilization. It is deactivated
+ by default, but it can be activated using the --cfg=tracing/buffer:1 switch.
+
+ Build Infrastructure
+ * Define a SIMGRID_VERSION macro in simgrid_config.h.
+ - We are trying hard to keep the API stable, but it may happen that
+ some things change (we're a research project after all, not a
+ nuclear plant operating system). If such things should happen, you
+ could rely on that macro to adapt.
+ - current value: 30600 for 3.06.00, aka 3.6
+ * Define macro MAKE_SIMGRID_VERSION(major, minor, patch) to help building
+ a number that can be compared with SIMGRID_VERSION.
+ * Add a build option -Denable_debug (set to ON by default): when set to OFF,
+ assertions and verbose/debug logging events are disabled at compile time.
+
+ -- Tue Jun 21 08:57:43 CEST 2011 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
+
+SimGrid (3.5) stable; urgency=medium
+
+ Model Checking
+ * New feature to any SimGrid-based simulator: Model-Checking
+ Check SIN#1 for more details.
+
+ SMPI
+ * New Model SMPI (three-interval linear regression for correction factors)
+ See RR-7426, available at http://hal.inria.fr/inria-00527150
+ * Ability to use FORTRAN MPI code (through f2c, automatically privatized)
+ * New MPI functions supported: MPI_Get_count(), MPI_Comm_split()
+ * New: RAM folding (see RR-7426 and examples/smpi/NAS/DT-folding)
+ * New: execution sampling (see RR-7426 and examples/smpi/NAS/EP-sampling)
+ * See also src/smpi/README
+
+ Tracing:
+ Tracing:
+ * Tracing system
+ - Tracing API changes: TRACE_start and TRACE_end should not be called
+ by user-code. They are automatically called by simulators created
+ with SimDAG, MSG and SMPI if the toolkit is compiled with
+ tracing_enabled=ON. Categories declaration and utilization remain the
+ same for MSG and SimDag.
+ - A function was added to the tracing API to declare categories with
+ colors:
+ - TRACE_category_with_color (char *category, char *color)
+ where color must be in the following format
+ "%f %f %f", red, green, blue
+ and red, green, blue are float values in the interval [0, 1]
+ - User can specify NULL as color parameter, or continue calling
+ TRACE_category (cat)
+ On that case, the tracing system will define random colors
+ - The following command-line options are supported:
+ --cfg=tracing/filename:msg.trace
+ --cfg=tracing:1 (activate tracing, needed to use others)
+ --cfg=tracing/platform:1 (categorized resource use)
+ --cfg=tracing/uncategorized:1 (uncategorized resource use)
+ --cfg=tracing/msg/task:1 (task creation)
+ --cfg=tracing/msg/process:1 (process creation, migration)
+ --cfg=tracing/msg/volume:1 (volume of MSG send/recv)
+ --cfg=tracing/smpi:1 (SMPI interface tracing)
+ --cfg=tracing/simdag:1 (allow SimDAG tasks receive categories)
+ - examples of examples/msg/tracing updated
+ * Tracing SimDag
+ - DAXLoader and DOTLoader functions can generate tasks with categories
+ - A new function to attribute a category to SD tasks:
+ TRACE_sd_set_task_category (SD_task_t task, char *category)
+ * Tracing the MPI interface implemented by SMPI
+ - Collective operations are traced with states
+ - Point-to-Point operations are traced with states/links
+ - Tracing activated by a parameter "-trace filename" passed
+ to smpirun during execution (considering that simgrid
+ is compiled with tracing enabled)
+ - To run the simulation with gdb, the simulator
+ accepts --cfg=tracing/smpi:1 to trace SMPI
+ - tesh files to check if smpi tracing is ok
+ - See examples/smpi/NAS/DT-trace
+ * GTNetS tracing re-worked
+ - adaptation to the tracing system of GTNets to cope
+ with modifications regarding the fullduplex mode
+ - new tesh files to check if gtnets tracing is ok
+
+ MSG
+ * Asynchronous communications through the functions:
+ MSG_task_isend/irecv and MSG_comm_test/wait/waitall
+ * New function: MSG_load_platform_script()
+ to make possible using a lua script instead of XML files to set up platforms
+ * New function: MSG_set_function
+ to associate functions to processes, used when bypassing the parser
+ * New functions: MSG_task_set_name(), MSG_task_set_compute_duration()
+
+ Platforms: Add some more examples in examples/platforms
+ * Grid'5000: see www.grid5000.fr
+ * *_30000_hosts.xml: various huge files [mainly scalability testing]
+
+ SURF
+ * Change the XML format. This is a very important modification. SimGrid
+ 3.5 introduces a new hierarchical format based on the notion of
+ Autonomous Systems. Compatibility with old format is ensured
+ through the perl script provided in the install bin directory
+ bin/simgrid_update_xml.
+ It is now possible to build platforms with specific routing
+ mechanism (Full/Dijkstra/DijkstraCache/Floyd) and to easily
+ connect several platforms together. We will try to provide soon
+ set of realistic platforms exploiting these properties (have a
+ look at examples/platforms/ for the moment).
+ * Take the opportunity of the XML format change to be a good XML citizen:
+ rename link:ctn to link_ctn and similar changes (also dealt with by
+ simgrid_update_xml)
+ * Add a new routing scheme (rule-based) using regular expressions. It
+ enables to have an extremely low memory footprint when the
+ underlying routing is simple and can be compactly described. You
+ need to have libpcre4-dev (perl regular expressions) installed if
+ you want to use this routing scheme.
+ * Revive the cluster TAG and allow to easily and efficiently (both in
+ term of memory and speed) connect clusters together. Have a look
+ at teshsuite/simdag/platforms/ to see how this can be done. With
+ this tag, you can create clusters with thousands of tasks at no
+ cost (have a look at examples/platforms/).
+ Note: clusters are implemented as ASes, so there is no need for an
+ enclosing AS tag if you have only one cluster in your platform.
+ * Add new generic functions in the public interface that allows the user
+ to call SURF 'create_resource' methods from your code (same
+ functionality as the XML bypass mechanism but with a much lighter
+ burden).
+ * Add a new model (enabled through command line --cfg=network/model:SMPI)
+ that uses a piecewise linear approximation to produce better
+ results when exchanging small messages.
+ * Add a new parameter to handle correctly full duplex link and account
+ for interferences between uplink and downlink communications
+ (activate with --cfg=fullduplex:1).
+
+ SIMDAG
+ * Rename the SD_READY (all dependencies are satisfied and task is
+ scheduled) state in SD_RUNNABLE and define a new SD_SCHEDULABLE (all
+ dependencies are satisfied) state.
+ This prevents a confusion between the notion of "ready to schedule"
+ (SD_SCHEDULABLE) used in DAG scheduling and that of "ready to be
+ simulated" (SD_RUNNABLE) used by the simulation kernel.
+ * Change the way a task is considered as ready. Instead of removing
+ dependencies when a task is done, a counter is decreased. This way,
+ it is always possible to reach ancestors thanks to the
+ SD_taks_get_parents function (even after the end of the simulation.)
+ * Change the return type of SD_Simulate from (SD_task_t*) into
+ xbt_dynar_t. This function was in handling a dynar internally and
+ converted it into a NULL terminated array for historical reasons.
+ * New function SD_dotload(char*) to load a DAG described in dot
+ format. This loader and the corresponding examples require the
+ installation of the graphviz library.
+ * Fix a bug in the management of tasks of size 0 in the surf network
+ models. This problem was only visible with SIMDAG and you should
+ thus disregard results produced with earlier versions if you
+ relied on this feature (some tasks were blocked because of this).
+ * Fix a bunch of stuff that prevented to use classical models with SIMDAG
+ even though your applications were doing only point-to-point
+ communications and sequential computations. Now you can really use any
+ model you want (of course, if you create real parallel tasks, which are
+ not implemented in most models beside ptaskL07, this will abort).
+ * Add an example that schedules a DAX on an heterogeneous platform
+ using a Min-Min strategy.
+ * New function SD_workstation_get_current_task() that returns the kind
+ of task currently running on a workstation in the sequential access
+ mode.
+ * Raise some warnings when unexecuted tasks remains at the end of the
+ simulation. This is usually caused by cycles in the DAG.
+
+ SIMIX
+ * New function: SIMIX_process_set_function() called by MSG_set_function
+ * Change the underlying waiting queue in semaphores so that a process
+ can wait on several of them simultaneously (as in waitany).
+ * Fix the way to handle tokens in semaphores so that all access patterns
+ work: {acquire, acquire_timeout, waitany} / {release, release_forever}.
+ * kill the dirty pimple SIMIX_message_sizes_output()
+ Please use (proper) visualization instead
+
+ XBT
+ * New data container: setset (set of sets of elements)
+ * New module: mmalloc (mapped malloc, allowing to have several
+ independent segments of malloc)
+ * New function: xbt_dict_cursor_set_data()
+ * New functions: xbt_dynar_sort(), xbt_dynar_compare()
+ * New function: xbt_dynar_is_empty()
+ * New function: xbt_fifo_get_last_item()
+ * Fix xbt_dynar_shrink(): use the right element size.
+ * Fix xbt_dynar_set*(): allow index larger than current size and memset 0
+ uninitialized areas during expand.
+ * Fix semaphores: previous implementation was severely broken.
+ * Use library init/fini functions for our initialization.
+ - you can use logs and other feature as soon as you want in your
+ code (even before the xbt_init / MSG_init)
+ - xbt_exit is now a no-op and produce a warning when used.
+
+ GRAS:
+ * Port GRAS to new SIMIX mechanisms. This allows gras users to
+ benefit from the latest improvement to the simulation kernel.
+ * Kill measurement sockets for now. If you rely on them, sorry. This
+ release is not for you. This feature will be reintroduced in the
+ future, but we cannot delay the release any further.
+ * New function: gras_msgtype_get_name().
+ * Implement gras_agent_spawn in RL too (the prototype changed a bit)
+ * Fix (at last) the pmm example: it should not randomly fail anymore.
+
+ Build chain: bug fixes and overall polishing
+ * Cmake is now stable enough. Hence, we killed the autotools.
+ * Port to windows ( TM :)
+ * Fix the 'make install' target.
+ No need to use 'make install-simgrid' anymore
+ * Introduce a 'make dist' target compiling a *source* archive
+ 'make package' compiles a binary archive
+ * Compile java files only on need
+ * Add --cd and --setenv command line options to tesh
+ * Out of source builds are not fully supported yet, but we are close
+ * Enable supernovae and optimization flags by default for our users
+
+ LUA Bindings
+ * Add layer to set up environment directly from lua, without XML.
+ * The effect of gras_stub_generator can be achieved through
+ lua too (check examples/gras/console/ping_generator.lua)
+
+ -- Wed, 01 Dec 2010 22:09:23 +0100 Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
+
+SimGrid (3.4.1) stable; urgency=low
+
+ The "Polishing easter eggs is probably a good idea" release.
+ This is a bug fixes release only.
+
+
+ Java Bindings
+ * Fix a bug preventing the tasks from begin garbage collected.
+
+ MSG
+ * Fix a bug occuring when a host involved in a communication fails.
+ This was not detected properly by the other peer involved in the
+ communication. Now, it's reported as a network error.
+
+ SimDag
+ * Warn the user about loop dependencies in data flow of DAX files
+ * Obey the control-flow dependencies of DAX files
+
+ Cmake
+ * Add option "enable_smpi" allowing to not compile SMPI.
+ Probably useful for the (Mac) users experiencing a build error here
+ * Improve the detection of lua5.1 and ruby1.8
+
+ -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Tus, 04 May 2010 28 16:11:16 +0100
+
+SimGrid (3.4) stable; urgency=low
+
+ The "Easter in Cargese" release. Also known as (major changes):
+
+ * the "se habla Java, Ruby 話せます, fala-se Lua (and deaf-friendly)"
+ ~> bindings were greatly improved
+ ~> new tracing infrastructure for better visualization introduced
+
+ * the "Welcome to configury modernity" release.
+ ~> we switched from autotools to cmake, and improved our cdash
+
+
+ A more detailled list of changes follow (full detail in svn log).
+
+ Java Bindings: Various Cleanups
+ * (install java-gcj-compat-dev on debian-like to use them)
+ * Remove put/get: no need to export deprecated interface in Java
+ Use send/receive instead.
+ * Cleanup the examples and add a README per directory
+ * Remove example autoDestination (that's the only way to go now)
+ * Remove example explicitDestination (was a plain copy of basic)
+ * Make JniException a runtime exception, so that there is no need to
+ declare the fact that you may encounter such a beast. I guess that
+ nobody will ever want to survive such error.
+ * Create specific errors for each MSG case of failure:
+ host failure, transfer failure, timeout, task cancelled
+ * Cleanup the exceptions that may get thrown by each function
+ * Other internal cleanups in Java bindings. Performance still bad :/
+ Ruby and Lua Bindings: create them
+ * (install ruby1.8-dev/liblua5.1-0-dev on debian-like to use them)
+ * That's new and great, you should try them out.
+ Same functionalities than Java bindings, only even less polished
+ SimDag:
+ * Kill the useless "rate" argument of SD_task_get_execution_time()
+ Everyone used to provide -1 as a value, it was not used, and the
+ semantic of a possible use wasn't even clear.
+ * SD_SCHED_NO_COST: Constant to use as cost in SD_task_schedule()
+ either as comm costs or compute costs to mean that there is no
+ such thing for that specific task.
+ * Add a SD_task_set_name() function
+ * Fix SD_task_unschedule() on typed tasks
+ * Fix SD_task_get_execution_time() to return seconds, not flop*sec
+ * In DAX loader, accept useless 'level' attributes to <job> since
+ LIGO DAGs have them (seem to be to ease graphical representation).
+ MSG:
+ * Add an example masterslave_mailbox.c using send/receive and not
+ the deprecated put/get interface.
+ * Kill the MSG_paje_output() function. It's a noop since 2 years.
+ * Kill MSG_WARNING and MSG_FATAL return codes: they were not used
+ anywere in source.
+ * Rename MSG_TIMEOUT_FAILURE into MSG_TIMEOUT for sake of logic
+ (declare MSG_USE_DEPRECATED to still have the old name)
+ * Add a MSG_task_set_data() function
+ * About trace replay (see examples/msg/actions):
+ - implement barrier
+ - Allow to work with splitted trace files for each process
+ Give the specific trace file as argument of each process,
+ and call MSG_action_trace_run(NULL)
+ You can still have one merged file for all processes.
+ - Fix implementation of collective operations
+ * Allow task_execute() on 0-sized tasks (closes #10063)
+ SMPI:
+ * This is the first release of SimGrid where SMPI is not considered
+ beta anymore (even if some corners should still be improved)
+ * Port over the new SIMIX_network submodule (internal refactoring)
+ * Basic support to log events as with SMPE (use --cfg=SMPE:1)
+ * Implement more missing elements of the standard:
+ - MPI_COMM_SELF
+ - MPI_MAXLOC MPI_MINLOC + all associated datatype MPI_DOUBLE_INT,
+ MPI_FLOAT_INT, etc.
+ - MPI_Address() MPI_Get_count() MPI_Type_free() MPI_Type_extent()
+ MPI_Scan() MPI_Get_processor_name()
+ - Added implementation of missing case for Alltoall (warning: it's
+ *not* the bruck variant from OpenMPI; based on Alltoallv instead)
+ - SMPI_MPI_Gather() SMPI_MPI_Gatherv() SMPI_MPI_Scatterv()
+ SMPI_MPI_Reduce_scatter() SMPI_MPI_Allgather()
+ SMPI_MPI_Allgatherv()
+ * Bug fixes include:
+ - MPI_Waitsome() was broken
+ - Allow relative includes in smpicc
+ - Command line cfg argument 'reference_speed' was ignored...
+ - Some functions did not properly lead to auto-benching of user code
+ - smpicc passes -O2 by default (just like openmpi one)
+ SIMIX:
+ * add SIMIX_action_suspend() and SIMIX_action_resume() functions
+ * Bug fixes about timeouts during communications
+ * add SIMIX_message_sizes_output() as a pimple to write to file the
+ amount of messages per size. Use gnuplot to get histogram.
+ Pimple because that's the only user-visible function of simix,
+ defined directly in xbt.h (irk, sorry)
+ * About semaphores:
+ - Add a SIMIX_sem_get_capacity() function
+ - Fix interactions with processe resume/suspende
+ - release_forever() was stupidly broken
+ - Fix SIMIX_display_process_status() for processes in a semaphore
+ - Make SIMIX_sem_block_onto() user-visible
+ * Refactoring context stuff:
+ - Use pseudo-OOP for better modularity
+ - reimplement SIMIX_process_kill() without process_schedule() so
+ that the latter can take as invariant that it is called from
+ maestro.
+ - Merge context_start into context_new for sake of simplicity
+ SURF:
+ * Add a Vivaldi network model, coded live during SUD'10 ;)
+ * Rename configuration variables to start a hierarchy:
+ o cpu_model -> cpu/model
+ o network_model -> network/model
+ o workstation_model -> workstation/model
+ * New configuration variables:
+ o network/bandwidth_factor: correction to bandwith
+ o network/latency_factor: correction to latency
+ o netwotk/weight_S: correction to the weight of competing streams
+ * Add a long description to the models, that users can see with such
+ argument on the command line: --cfg=cpu/model:help
+ * --help-models display the long description of all known models
+ XBT:
+ * config: add the ability to set a default value after registration
+ Does not override any previously set value (e.g. from cmd line)
+ * dict: allow to have integer key and data.
+ When so, you need to use the following functions
+ void xbt_dicti_set(xbt_dict_t dict, uintptr_t key, uintptr_t data);
+ uintptr_t xbt_dicti_get(xbt_dict_t dict, uintptr_t key);
+ void xbt_dicti_remove(xbt_dict_t dict, uintptr_t key);
+ In contrary to regular dicts, the key is not malloced before copy.
+ Mixing scalar and regular elements in the same dict is not tested
+ (but may work).
+ * Allow to use xbt_dynar_shrink() to expend the dynar instead
+ Tracing for Visualization:
+ * SimGrid is now instrumented in order to generate a trace file for
+ visualization analysis: to use it, need to compile SimGrid with the
+ "tracing" option enabled, and instrument the program using SimGrid with
+ TRACE_start, TRACE_category, TRACE_msg_set_task_category and TRACE_end
+ (among other functions).
+ * The instrumentation only traces the platform utilization for now
+ * Documentation to use the tracing functions and how to analyze the
+ traces with the Triva tool is written.
+ * More information about: SimGrid FAQ (in the section Tracing Simulations
+ for Visualization)
+ Build system:
+ * We moved to cmake as default build system. Autotools support will
+ be dropped soon. Check the FAQ for more info about how to use it.
+ * Greatly improved our cdash/ctest interactions
+ Check http://cdash.inria.fr/CDash/index.php?project=Simgrid
+ * Added memory checking tests with valgrind; lot of memleak fixing.
+ This may be the first release of simgrid with so few memory issues
+ * Added code coverage tests.
+ Our coverage is still improvable, but at least we see it on cdash.
+
+ -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Wed, 28 Apr 2010 28 17:11:16 +0100
+
+SimGrid (3.3.4) stable; urgency=low
+
+ The "Desktop Grid needs love too" release (also called Xmas release).
+
+ Models improvements:
+ * Major speedup in the maxmin system solving by using lazy evaluation
+ Instead of solving completely the maxmin system at each iteration,
+ only invalidate (and recompute) the modified parts.
+ This new feature is enabled in default models but you can try to
+ turn it on with "--cfg:maxmin-selective-update=1" for other models.
+ * Cas01 IMproved as default CPU model
+ This CPU model is the same Cas01 model, but it uses the
+ maxmin-selective-update flag and a heap structure to manage
+ actions on SURF kernel.
+ It reduces the complexity to find the next action to finish and,
+ consequently, it's faster than the old Cas01.
+ This is the new default CPU model (Cas01).
+ * Rename the old Cas01 model to Cas01_fullupdate
+ Keep the old cpu model Cas01 with the new name of Cas01_fullupdate.
+ Use "--cfg=cpu_model:Cas01_fullupdate" to use the old default CPU model.
+ * CpuTI (CPU Trace Integration)
+ A new CPU model whose objective is simulate faster when using
+ availability trace files.
+ Instead of using a full featured, over engineered maxmin system for
+ CPU modeling, this model does the pre-integration of traces files
+ to calculate the amount of CPU power available, and so, executes
+ faster than the old CPU models.
+ Use "--cfg=cpu_model:CpuTI" to change to this CPU model.
+ * Use LV08 as default network model since it gives better accuracy
+ for small messages and shouldn't change things for big ones.
+ Use --cfg=network_model:CM02 to get the previous behavior.
+
+
+ ******************************************
+ *DO NOT MIX 3.3.4 RESULTS WITH OLDER ONES*
+ ******************************************
+ * The new CPU model may changes simulations!
+ The point is that events occurring at the exact same timestamp
+ are not scheduled in the same order with the old and new
+ version. This may be enough to completely change the execution
+ of simulations in some cases.
+ * The new network model will change simulations!
+ This new model is more realistic than the previous one, so you
+ should consider redoing your old experiments with this model.
+ Sorry for the inconvenience.
+
+ Build System:
+ * Introduce the supernovae compilation mode
+ When compiled that way, the whole SimGrid (or almost) is put in a
+ single compilation unit and compiled in one shoot.
+ This is to help gcc which has difficulties to inline stuff from one
+ file into another.
+ The speedup seem to be above 15%, althrough more tests are needed on
+ amd64 to confirm that gain.
+
+ MSG:
+ * Port of MSG's mailbox on top of SIMIX network
+ The put/get mechanism was greatly simplified on the way.
+
+ SIMIX:
+ * New SIMIX network module. Provides:
+ - Mailbox: rendez-vous mecanism to find with who you want to speak
+ - Synchronous send/recv: easier and hopefully faster since the
+ logic is handled in the maestro process directly now
+ - Asynchronous send/recv: you dreamt of it? It's here now
+ Too bad that nobody cared enough to propagate the change to MSG.
+ * Add semaphores as SIMIX synchronization mechanism.
+
+ SimDag:
+ * new function SD_daxload(char*) to load a DAX file
+ (see http://vtcpc.isi.edu/pegasus/index.php/WorkflowGenerator)
+ * Introduce typed tasks. Specify its kind and cost at creation.
+ At scheduling, just give where it should be placed, and the cost
+ for each involved resource is automatically computed.
+ Existing constructors so far (more to come of course):
+ - SD_task_create_comm_e2e() for end-to-end communication
+ - SD_task_create_comp_seq() for sequential computation
+ Use SD_task_schedulev() / SD_task_schedulel() to schedule them.
+ * new function SD_task_dump() for debuging display
+ * new function SD_task_dotty(task,FILE*) writing to file the info
+ about the task in dotty format
+ * SD_task_dependency_exists() can now cope with having one of its
+ arguments NULL. If so, it tests whether the other argument has any
+ dependency.
+ * Add getters on list of preceding/following tasks:
+ SD_task_get_parents(task) and SD_task_get_children(task)
+ * Add getters on amount of workstations and list:
+ SD_task_get_workstation_count(t) and SD_task_get_workstation_list(t)
+ * Add getter on task kind: SD_task_get_kind(task)
+ * Update the start_time and finish_time of tasks on completion/failure
+ * Bugfix: Remove task from state swags when destroyed
+
+ GRAS:
+ * New function: void gras_cpu_burn(double flops) -- a simple CPU burner
+
+ XBT:
+ * New function: xbt_dynar_dopar(dynar,fun) to map a function over the
+ dynar with one separate thread per value of the dynar.
+ * Change the prototype of xbt_thread_create(), sorry.
+ Added a boolean parameter indicating whether we want to join this
+ thread (used in SG only for now)
+ * Implement xbt_thread_join and xbt_thread_yield in SG also.
+
+ Bug fixes:
+ * GTNetS wrappers should now be usable again (and betterly tested too)
+ * Fix a major regression from 3.2 where the timeout provided to
+ MSG_task_put_with_timeout() was used as absolute time before which
+ the comm should be done.
+ * Start to fix the <cluster> tag.
+ - Internal links should be good now (beside of the loopback, which
+ use the private link instead)
+ - paths to the external world is still rather broken
+ - the <route:multi> tag is just broken. Actually that's brain-dead.
+ We need sth like <route:multi src="myCluster" dst="$*-${myCluster}">
+ to make it less stupid
+ ** Check your platform with teshsuite/simdag/platforms/flatifier **
+ * Fix a source-level compatibility glitch from 3.2: after defining
+ MSG_USE_DEPRECATED, you can use the old name
+ MSG_task_put_with_time_out() for MSG_task_put_with_timeout()
+ * Allow to compile from the SVN with automake 1.11
+ * Fix some problems when using the "start_time" tag in deployment XMLs.
+ * Fix #8569: XBT/synchro.h has redundant declarations
+ * Fix #8563: MSG return values and exceptions
+ Introduce a MSG_TIMEOUT_FAILURE return code and use it consistently.
+ * Integrate patch #8636: Obey DESTDIR when installing documentation.
+ Thanks to Robson Peixoto.
+ * Fix a vicious bug in dictionaries inducing that some elements were
+ not freed on xbt_dict_free()
+
+ Portability report of this version:
+ * Main portability targets:
+ - linux (ubuntu (804/810/910) /debian (4/5/testing) /fedora (core11))
+ on (amd64/i386/ia64)
+ - mac leopard on i386
+ Known problems: http://cdash.inria.fr/CDash/index.php?project=Simgrid
+ but nothing critical.
+ * Other platforms: windows, AIX and others were not tested for this release
+
+ Timing report of this version:
+ * Lazy evaluation brings arbitrary speedup (ie, speedup depending on
+ scenario parameters). From 8h to a few seconds in desktop grid settings.
+ * Supernovae brings about 25% speedup on i386.
+
+ -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Thu, 24 Dec 2009 19:07:39 +0100
+
+SimGrid (3.3.3) stable; urgency=low
+
+ The "Need for Speed" release.
+
+ The timings done to validate the 3.3.2 were faulty.
+ Instead of being 5% faster, it was 15% slower (compared to 3.3.1).
+
+ The problem was a conversion from a manually handled vector to
+ xbt_dynar_t on the critical path.
+ xbt_dynar_foreach calls functions, inducing stack management crap.
+
+ We inlined these functions and xbt_dynar_foreach is now breath taking.
+ We also inlined xbt_swag_belong on the way.
+
+ Here are some approximate speedup measurements (on master/slaves
+ simulations lasting between 10s and 20s each):
+ 3.3.1 -> 3.3.2: about same performance
+ 3.3.2 -> 3.3.3: 40% speedup
+ 3.3.1 -> 3.3.3: 40% speedup
+ 3.3.1 with inline patch -> 3.3.3: 30% speedup
+
+ Our reading is that the refactoring which occurred in 3.3.2 made us
+ suffer much more from the xbt_dynar_foreach low performance, but
+ once we solved this, this refactoring proved to be very performance
+ effective. From the 40% speedup, somehow, 10% are due to the
+ inlining and 30% to the refactoring.
+
+ That's a pitty that gcc cannot inline functions placed in other files
+ alone. We have to choose between:
+ - break the encapsulation (by putting private data structures and
+ accessors in headers files to help gcc)
+ - live with low performance
+ - switch to a decent compiler such as icc (not quite possible).
+
+ -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Thu, 20 Aug 2009 21:21:33 +0200
+
+SimGrid (3.3.2) stable; urgency=low
+
+ The "Simplicity does not preceed complexity, but follows it" release.
+
+ The main contributors of this release were (lexical order):
+ Silas De Munck, Stéphane Genaud, Martin Quinson, Cristian Rosa.
+
+ SURF:
+ * Extract the routing logic into its own object.
+ (was dupplicated in network.c and workstation_LV07.c;
+ Allows to implement other ways of storing that info)
+ => kill now useless network_card concept
+ - Use dynar to represent routes (instead of void** + int*)
+ - kill link_set (use surf_network_model->resource_set instead)
+ - Add a command-line option to choose the routing schema to use
+ - Add three new models:
+ * Floyd (shortest path computed at initialization)
+ * Dijikstra (shortest path recomputed all the time)
+ * Cached Dijikstra (shortest path computed on need)
+ All these models where contributed by Silas De Munck, and are
+ described in his ICCS09 paper.
+
+ * Simplify model declaration
+ (less redirections, less function to write when defining a model)
+ - Factorize stuff between models:
+ - model_init/exit
+ - Set of resources:
+ surf_model_resource_set(model)
+ surf_model_resource_by_name(model, name)
+ - Unify the types of models in s_surf_model_t (using an union)
+ - Embeed fields of common_public directly into s_surf_model_t
+ - Rename model methods:
+ action_free ~> action_unref
+ action_change_state ~> action_state_set
+ action_get_state ~> action_state_get
+ - Change model methods into functions :
+ (model)->common_public->action_use ~> surf_action_ref
+
+ * Implement a generic resource; use it as ancestor to specific ones
+ (allows to kill duplicated code in models)
+ Drawback: timer command don't need no name nor properties;
+ workstation_CLM03 don't need no properties
+ (but I guess we can live with those few bytes wasted)
+
+ * Improve the action object model
+ - implement a constructor avoiding dupplicated code about field
+ initialization in generic_action part.
+
+ * Kill the SDP model: it has an external dependency, is deprecated
+ in flavor of modern lmm models, and didn't compile since a while
+
+ SIMIX:
+ * Relocation of the context module from XBT to SIMIX.
+ (the context were decoupled from the simix processes, duplicating a lot of code)
+ => a lot of code was factorized
+ - less overhead is introduced during scheduling
+ - simpler API for the context factory
+ - the logic for process creation,destruction and manipulation was simplified
+ * Simplification of the s_smx_process_t data structure.
+ => accesing the simix level data associated to a process is faster now,
+ and the code is a lot more readable.
+
+ SMPI:
+ * Implement some more MPI primitives:
+ MPI_Bcast, MPI_Waitany, MPI_Waitall, MPI_Reduce, MPI_Allreduce, MPI_Scatter, MPI_Sendrecv, MPI_Alltoall
+ -implementation: Bcast: flat or 2-ary tree (default),
+ Barrier: 4-ary tree,
+ Reduce: flat tree
+ Allreduce: Reduce then Bcast
+ Alltoall: "basic_linear" if data per proc < 3Kb, "otherwise pairwise".
+ Not yet implemented: "Bruck" for data per proc < 200b and comm size > 12
+ Alltoallv: flat tree, like ompi
+ Scatter: flat tree
+ * Add support for optimized collectives (Bcast is now binomial by default)
+ * Port smpirun and smpicc to OS X
+
+ SimDag:
+ * Kill SD_link_get_properties: hard to maintain and makes very little sense
+ Shout out if you used it.
+
+ GRAS:
+ * Display the list of still queued messages in SG mode when existing
+ the process.
+
+ XBT:
+ * Add xbt_set_get_by_name_or_null() [Silas De Munck]
+ * Add xbt_graph_node_get_outedges() [Silas De Munck]
+ * Add xbt_str_from_file(FILE*)
+ * Add xbt_dict_get_key achieving a linear reverse search
+ * Remove the context module
+
+ Portability report of this version:
+ * Main portability targets:
+ - Linux(debian)/x86/context
+ - Linux(debian)/x86/pthreads
+ - Linux(debian)/amd64/context
+ - Linux(debian)/amd64/pthreads
+ On these, we still have the eratic breakages of gras/pmm and
+ amok/saturate_sg reported in previous version. We still think
+ that the tests are the cause of the fault, not the tested code.
+
+ - Mac OSX Leopard/x86/context
+ Still false negative in tesh autotesting.
+ Smpi still fails, but this time because readlink does not accept -f
+ Everything seems to work properly beside of that.
+
+ * Exotic platforms:
+ - AIX version 5.3 (only tested contexts this time)
+ Smpi still fails there because mktemp is not installed.
+ Everything seems to work properly beside of that.
+ - OpenSolaris 11
+ I managed to compile it for the first time, but several breakages.
+ Won't delay the release for this exotic platform.
+
+ * Windows: it's still lagging behind. If you want to help, please
+ stand up.
+
+ Timing report of this version:
+ This version seem to be more than 5% faster than 3.3.1 (on linux
+ 64bits with contextes). The gain is less than expected, we are
+ investigating this for next release.
+
+ -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Wed, 19 Aug 2009 17:07:12 +0200
+
+SimGrid (3.3.1) stable; urgency=low
+
+ OVERALL CHANGES:
+ * Implement a --cfg-help to show existing configuration variables
+ * Build chain do not require doxygen in maintainer mode
+
+ GRAS:
+ * fix a bug on struct sizeof computation, which prevented the
+ exchange of arrays of structs in some conditions
+ - added a regression test about this in datadesc_usage
+ * Allow the exchange of 0-long dynamic vectors.
+ - for that, use -1 as indicator of dynamic size instead of 0
+ - This implied to change any size from unsigned long to long,
+ reducing a bit communication abilities, but I guess that with
+ 64bits being quite common, this is more than enough.
+ - This also induce a protocol change, thus bumping network protocol
+ version from 0 to 1 (if we have external users, we have to get
+ clean on that point too ;)
+ - added two regression tests about this in datadesc_usage
+ * Be more verbose when propagating local exceptions
+ This helps debugging.
+ * Display the status of simulated processes when receiving SIGINT in
+ simulation mode
+
+ MSG:
+ * Allow to control the simulation from a trace file.
+ New functions MSG_action_register() and MSG_action_trace_run()
+ The first one allows to associate a function execution to each
+ kind of action while the second one parses a trace file and
+ triggers the corresponding actions within the system.
+ For now, only a toy example is provided in examples/msg/actions
+ * Add an exemple of process migration in examples/msg/migration
+ * Fix a bug in task exchange which broke MSG_task_get_sender()
+ Add a teshsuite regression test for that.
+ [Bug: if MSG_task_get_sender() is called after sender exit,
+ bad things happen]
+ * Fix a bug which prevented suspend/resume to work properly
+ * Display the status of simulated processes when receiving SIGINT
+ This fixes a regression of v3.3. due to the introduction of SIMIX
+ * Bug fixing in failure management:
+ - trace could not start by a failure at time 0
+ - failure during communications were not working
+
+ SIMIX:
+ * Add SIMIX_process_set_name() to change the name of the current
+ process in the log messages.
+ * Store smx_hosts in a dict since we only retrieve them by name
+ * Move the configuration infrastructure to surf
+
+ SIMDAG:
+ * Move the configuration infrastructure to surf
+
+ SMPI:
+ * Massive internal cleanups:
+ - Store internal structures on processes instead of hosts (allows
+ to have more than one process per host, in addition of being more
+ logical)
+ - Cleanup the initialization/finalization process
+ - Kill a whole bunch of unneeded synchronization:
+ processes run in exclusive manner within the simulator
+ - Move queues from global tables to process data fields
+ * Improve smpirun:
+ - now accept -platform and -hostfile arguments
+ - Pass the right rank value to processes according to the hostfile
+ * Compile the examples by default, and use them as regression tests
+ * Implement MPI_Wtime()
+ * Change the reference speed to a command line option
+
+ SURF:
+ * TCP_gamma can now be specified as command line option using
+ --cfg=TCP_gamma:10000000.0
+ * Change the --surf-path cmd line option into --cfg=path:
+
+ XBT:
+ * Also include strbuff from xbt.h public header
+ * xbt_ex_display(): do not free the exception after displaying
+ This allows to do more with the given exception afterward.
+ Users should call xbt_ex_free() themselves.
+
+
+
+ Portability report of this version:
+ * Main portability targets:
+ - Linux(debian)/x86/context
+ - Linux(debian)/x86/pthreads
+ - Linux(debian)/amd64/context
+ - Linux(debian)/amd64/pthreads
+ These targets fail about 1/10 of times on gras/pmm, but we believe
+ that this is because of the test, not because of simgrid.
+ amok/saturate_sg fails even more rarely, and the test may not be
+ the problem.
+
+ - Mac OSX Leopard/x86/context
+ The test suite still spits tons of errors because some obscure
+ force prevents us from removing the temporary directories
+ arguing that they still contain some metadata I've never heard of.
+ Smpi fails because seq is not installed.
+ Everything seems to work properly beside of that.
+
+ * Exotic platforms:
+ - AIX version 5.3 (both contexts and pthread)
+ Smpi still fails there because mktemp is not installed.
+ XML inclusions seems rosty on AIX.
+
+ * Windows: it's still lagging behind. If you want to help, please
+ stand up.
+
+ -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Sat, 27 Jun 2009 00:14:30 +0200
+
+SimGrid (3.3) stable; urgency=high
+
+ OVERALL CHANGES:
+
+ * JAVA BINDINGS for MSG (you dreamt of them? We made them)
+ [Malek Cherier & Mt]
+
+ * Introduce the SIMIX module: factorize code between MSG and GRAS.
+ [Bruno Donassolo]
+
+ Until now, GRAS were using MSG as an interface to SURF. It was
+ quite difficult because both interface have several differences
+ (MSG channels vs GRAS sockets were the most notable point).
+
+ This also opens the gate to SMPI (which should occur soon) and speed
+ up simulations by to 40% (even if it were not the main goal).
+
+ **************************************
+ *DO NOT MIX 3.2 RESULTS WITH 3.3 ONES* Simix may changes simulations!
+ **************************************
+ The point is that events occuring at the exact same timestamp are
+ not scheduled in the same order with the old and new version. This
+ may be enough to completely change the execution of simulations in
+ some cases. Sorry for the inconvenience.
+
+ * Cleanup and upgrade the XML format to push further scalability
+ issues (check http://hal.inria.fr/inria-00256883/ for more info)
+
+ * Improve the testing infrastructure with tesh. Now a very large part of
+ the code is tested not only by being run but also by checking that the
+ output match an expected output [Mt].
+
+ * Move on to FleXML v1.7 for the embeeded XML parsers. This version
+ is really less memory-demanding, which should allow you to use
+ larger files in SimGrid [AL].
+
+ * Inform valgrind about our contextes, so that it becomes usable
+ with the default (and more effecient) version of SimGrid
+ [contributed by Sékou Diakite, many thanks]
+
+ GRAS:
+ * Introduce a listener thread in charge of receiving incoming
+ messages from the network. It allows to overlap communication and
+ computation but most notably, it removes some stupid deadlocks due
+ to the fact that so far, a process could not send and receive at
+ the same time. This made most non trivial communication schema
+ impossible.
+ * Convert the PIDs from long int to int to match the MSG ones (and
+ linux ones too) [Mt]
+ * New function: gras_agent_spawn() to launch a new process on
+ current host. Only working in simulation for now. [Mt]
+ * New function: gras_os_hostport() returning a constant form (ie,
+ not needing to be freed) of "gras_os_hostname():gras_os_myport()"
+
+ XBT:
+ * Make the backtrace of exceptions more human readable [Mt]
+ * New module: xbt/str [Mt]
+ a ton of string utility functions (split, join, printf to a newly
+ allocated buffer, trim, etc)
+ * New module: xbt/hash [Mt]
+ SHA1 hashing algorithm (more to come if needed)
+ * New module: xbt/synchro [Mt]
+ synchronization tools (mutex and conditions) working the same way
+ in simulation and in real life (mainly useful for GRAS, but not
+ only).
+ * New module: xbt/queue [Mt]
+ classical producer/consumer synchronization scheme
+ * xbt_dynar_new_sync() creates a synchronized dynar. All access
+ (using the classical functions will get serialized) [Mt]
+ * Make dictionary internal table dynamic. No need to specify its size
+ anymore; functions xbt_dict_new_ext() and xbt_dict_hashsize_set()
+ thus dropped. [Mt].
+ * Make sure the log channels are organized as a tree under windows
+ (because of ANSI C compatibility issue, any channel were child of
+ root directly) [Mt].
+
+ SURF:
+ * Cleaned many thing in surf and fixed a few bugs [AL].
+ * Add a nice command line configuration mechanism to compose models [AL].
+ * Add a new model for parallel tasks (ptask_L07) that is less buggy than
+ the previous one (KCCFLN05). It relies on something that looks like
+ a max-min sharing mechanism but cannot be written as such. A new solver
+ was thus designed [AL].
+ * Add a new solver to lmm. Based on Lagrange optimization and
+ gradient-based descent, it enables to efficiently maximise systems s.a
+
+ sum f_i(x_i) s.t Ax<= b with A_{i,j}>=0 and f_i a concave function.
+
+ This solver enables to propose two new network models for TCP Reno and
+ TCP Vegas based on Low's work. These models still need to be fully
+ tested though [Pedro Velho].
+
+ SIMDAG [AL]:
+ * Bug fix in SD_simulate. Now the time bound given as argument is
+ used.
+ * Use the new parallel task model (ptask_L07) as default.
+ * Use the SURF command line configuration mechanism.
+ * 0-size tasks (for synchronization) should now work.
+
+ -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Sun Apr 12 05:20:36 CEST 2009
+
+SimGrid (3.2) stable; urgency=high
+
+ OVERALL CHANGES:
+ * Port to windows.
+ We still experience issues on this platform, but we believe that at
+ least MSG is usable.
+
+ GRAS API BREAKAGE (for simplification purpose, sorry):
+ * the gras_msgtype_by_name is not used anymore. Instead of
+ gras_msg_send(toserver, gras_msgtype_by_name("request"), &request);
+ you can write (and must)
+ gras_msg_send(toserver, "request", &request);
+ - If you still want to pass a gras_msgtype_t to the function (to cache
+ the type and avoid the lookup time), use the gras_msg_send_() variant.
+ - Impacted functions:
+ gras_cb_register, gras_cb_unregister, gras_msg_send, gras_msg_wait,
+ gras_msg_rpccall, gras_msg_rpc_async_call, gras_msg_wait_ext
+ * The callbacks are now expected to return 0 when everything went well
+ (just like the main() function)
+
+ GRAS new features and improvements:
+ * New module mecanism where user code can use per process globals [Mt]
+ This is similar to gras_userdata_*() functions, but for libraries. It
+ factorize some code developped over and over in the examples and AMOK.
+ It has still to be documented and used (only amok/peermanagement is
+ converted for now).
+ * Fix a vicious bug in the TCP buffering mecanism which leaded to message
+ loss when they were small enough to fit into the buffer and sent quickly
+ enough so that they can all get received in one shoot.
+ * gras_datadesc_by_name and gras_msgtype_by_name: now raise an exception
+ if not found. Use the *_or_null() variant for the old semantic.
+ * In gras_msg_handle, do not discard messages without callback.
+ They are probably messages to be explicitly awaited later (ie, proofs of
+ mis-synchronization in userland since they are sent before being awaited)
+ No big deal usually.
+ * gras_socket_meas_send/recv: semantic changed!
+ The numerical arguments used to be (1) the total amount of data to send
+ and (2) msg_size. This was changed to (1) msg_size and (2) amount of
+ messages. This was need for the fool willing to send more than MAXINT
+ bytes on quite fat pipes.
+
+ AMOK:
+ * Do really rename the hostmanagement module to peermanagement. [Mt]
+ Ie, rename functions from amok_hm_* to amok_pm_*. This breaks the API,
+ but this is rather new and this was documented in the module
+ documentation (poor excuses, I admit)
+ * Bandwidth measurement semantic changed! This follows the changes to
+ gras_socket_meas_send/recv explained above.
+
+ SIMDAG:
+ * A sequential mode has been added to the workstations. When a workstation
+ is in sequential mode, it can execute only one task, and the other tasks
+ are waiting in a FIFO. [Christophe Thiery]
+
+ SURF:
+ * The KCCFLN05 workstation model now handles parallel tasks. It is the
+ model for SIMDAG. [Christophe Thiery]
+ * Bug fix in the maxmin solver: Some values were close to 0 instead of
+ equal to 0, which caused some bad behaviors in
+ saturated_constraint_set_update. I now use a threshold mechanism like in
+ surf. [AL]
+
+ XBT:
+ * When running manually src/testall, you select specific units [Mt]
+ testall is the result of our cunit mecanism, and should replace all
+ the scripty thingy around since bash don't run easily on billware.
+
+ * A mallocator system has been added. [Christophe Thiery]
+ Mallocators allow you to recycle your unused objects instead of freeing them
+ and allocating new ones.
+
+ Documentation update:
+ * FAQ reworking + New FAQs:
+ - "Valgrind spits tons of errors!" [Mt]
+ - "How to repport bugs" [Mt]
+ - "Cross-compiling a Windows DLL of SimGrid from Linux" [Mt]
+ - "What is the difference between MSG, SimDag, and GRAS?" [Mt]
+ - Communication time measurement within MSG [AL]
+ - I experience weird communication times when I change the latency [AL]
+ * GRAS tutorial [Mt]
+ It contains:
+ - an introduction to the framework and to the used communication model
+ - an initiatic tour introducing the most proheminent features:
+ o Part 1: Bases
+ . Lesson 0: Installing GRAS
+ . Lesson 1: Setting up your own project
+ o Part 2: Message passing
+ . Lesson 2: Exchanging simple messages
+ . Lesson 3: Passing arguments to the processes (in SG)
+ . Lesson 4: Attaching callbacks to messages
+ . Lesson 5: Using globals in processes
+ . Lesson 6: Logging informations properly
+ . Lesson 7: Using internal timers
+ . Lesson 8: Handling errors through exceptions
+ . Lesson 9: Exchanging simple data
+ . Lesson 10: Remote Procedure Calling (RPC)
+ . Lesson 11: Explicitely waiting for messages
+ . Recapping of message passing features in GRAS
+ - A HOWTO section containing:
+ o HOWTO design a GRAS application
+ More are due, of course. They will come latter. In the meanwhile, you can
+ check the examples which are still here.
+
+ -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Fri Mar 16 21:11:46 CET 2007
+
+SimGrid (3.1) stable; urgency=high
+
+ General:
+ * Port to gcc 4.x
+ There was a stack corruption somewhere, visible only when optimizing
+ with these versions. [Vince]
+
+ SIMDAG:
+ * This is a NEW module! SimDAG (SD for short) is a revival of the old SG
+ module that enabled to play with Directed Acyclic Graphs. It is built
+ directly on top of SURF and provides an API rather close to the old
+ SG. Some old codes using SG are currently under rewrite to check that
+ all needful functions are provided. [Christophe Thiery]
+
+ SURF:
+ * Complete rewrite of the KCCFLN05 workstation model. It is now an
+ extension of the classical CLM03 model that gracefully handles
+ failures. This is now the default model for MSG and GRAS. It doesn't
+ handle parallel tasks yet though. [AL]
+ * Bug fix: Weights were not correctly set in the network part.
+ WARNING: This may have resulted in incorrect results with simulations
+ where there are more than one flow on a given link. [AL]
+
+ SURF, MSG, GRAS:
+ * After a (long ?) discussion on simgrid-devel, we have decided that the
+ convention we had on units was stupid. That is why it has been decided
+ to move from (MBits, MFlops, seconds) to (Bits, Flops, seconds).
+ WARNING : This means that all previous platform files will not work as
+ such with this version! A warning is issued to ask users to update
+ their files. [AL]
+ A conversion script can be found in the contrib module of the CVS, under
+ the name contrib/platform_generation/surfxml_update.pl [MQ]
+
+ MSG,GRAS:
+ * Bug fix: Processes were started in reverse order, wrt deployment file.
+ WARNING: if your code relies on this bug, please fix it. [AL]
+ * Bug fix: Add a test in MSG_task_execute to stop whenever a task is
+ being executed on two different locations. [AL]
+ * Bug fix: Failures are now better supported thanks to Derrick's tests
+ (there was many failure situations I hadn't thought of and that weren't
+ correctly handled). [AL]
+ * New function: MSG_host_is_avail indicates you whether a given m_host_t
+ is up or down. [AL]
+
+ GRAS:
+ * New! a real RPC mecanism, as it ought to be since too long. [MQ]
+ Exception occurring on server-side are propagated back to client (!).
+
+ API CHANGE: the callback changed their prototype. Change:
+ int my_handler(gras_socket_t expeditor, void *payload_data) {
+ to:
+ int my_handler(gras_msg_cb_ctx_t ctx , void *payload_data) {
+ gras_socket_t expeditor=gras_msg_cb_ctx_from(ctx);
+ and you're set.
+ * New! function: gras_msg_handleall to deal with all messages arriving
+ within a given period.
+ * New! function: gras_socket_server_range to get a server socket in a
+ range of port numbers (ease to avoid port number conflicts) [MQ]
+ * New! gras processes display their backtrace when they get a SIGUSR1
+ or when Ctrl-C is pressed. Use Ctrl-C Ctrl-C to exit.
+ Sweet to debug RL processes [MQ]
+
+ AMOK:
+ * Bandwidth module:
+ - Do not force experiment sizes to be expressed in kb, or it becomes
+ impossible to measure the latency this way (needs one byte-long tests)
+ WARNING: this changes the amok_bw_* function semantic. [MQ]
+ - Implements the link saturation stuff. [MQ]
+ * Peer management module:
+ New! module factorizing code that we wrote over and over [MQ].
+
+ XBT:
+ * New module: cunit (my jUnit implementation in ansi C) [MQ]
+ - Test units are placed directly into the library code, they get extracted
+ automatically and placed into the src/testall binary.
+ - Convert most of the XBT tests to this system.
+ * New functions: xbt_dynar_getfirst_as() and xbt_dynar_getlast_as() [MQ]
+ * XML parsing: rewrote parts of flexml to enable multiple xml parsers to
+ live in the same C code. This required to change a little bit the API
+ of surfxml parsing but shouldn't be an issue for end-users. [AL]
+ * New module: sparse graph structure with basic algorithms (this is work
+ in progress and the API is not considered to be frozen yet). [AL]
+ * Display more information on backtraces: source line & function names are
+ now displayed just like valgrind does (rely on addr2line tool) [MQ]
+ * New function: xbt_backtrace_display(). Sweet while debuging [MQ]
+ * Reworked a little bit some #include statements to load only required
+ headers. Some user code that relied on SimGrid to include stdlib or
+ stdio may need to include it by themselves. [AL]
+ * Fixed xbt/log.h. A missing SG_BEGIN_DECL prevented compilation with
+ g++. [AL]
+ * Renamed xbt_host_t into xbt_peer_t since it betterly describes what I
+ meant. This breaks the API of AMOK and of xbt/config. Sorry about this,
+ but I guess that almost nobody used those parts. [MQ]
+
+ -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Fri, 14 Jul 2006 01:32:27 +0200
+
+SimGrid (3.0.1) stable; urgency=low
+
+ XBT:
+ * Unfortunately, I had missed 5 misnamed functions:
+ xbt_fifo_item_t xbt_fifo_newitem(void);
+ void xbt_fifo_freeitem(xbt_fifo_item_t);
+ xbt_fifo_item_t xbt_fifo_getFirstItem(xbt_fifo_t l);
+ xbt_fifo_item_t xbt_fifo_getNextItem(xbt_fifo_item_t i);
+ xbt_fifo_item_t xbt_fifo_getPrevItem(xbt_fifo_item_t i);
+ They're now deprecated. Please use their new versions:
+ xbt_fifo_item_t xbt_fifo_new_item(void);
+ void xbt_fifo_free_item(xbt_fifo_item_t);
+ xbt_fifo_item_t xbt_fifo_get_first_item(xbt_fifo_t l);
+ xbt_fifo_item_t xbt_fifo_get_next_item(xbt_fifo_item_t i);
+ xbt_fifo_item_t xbt_fifo_get_prev_item(xbt_fifo_item_t i);
+ [AL]
+ * Bugfix: really disconnect fifo items which are remove_item()ed [AL]
+ * Documentation: xbt_log module unmercifully reworked [MQ]
+ * Bugfix: there was a problem with the ending of contexts with
+ the pthread backend. It caused some weird deadlock or behavior
+ depending on the pthread implementation. [AL]
+ * Bugfix: get the exceptions raised in the simulator repport where
+ and why they come from when they are not catched in time [AL, MQ]
+
+ SURF:
+ * Bugfix: Do repport the error when two non-connected hosts try to
+ exchange data (Thanks to Flavien for stumbling into this one) [AL]
+
+ SURF:
+ * Add additionnal checkings on communications. Assert that two
+ communicating hosts are connected by a set of links... [AL]
+
+ MSG:
+ * Add additionnal checkings on channel values in communication [AL]
+ * New: MSG_task_get_source to see on which host a task was generated [HC]
+ * New: int MSG_task_probe_from_host(int channel, m_host_t host): returns
+ the number of tasks waiting to be received on channel and sent
+ by host. [AL]
+ * New: MSG_error_t MSG_task_get_from_host(m_task_t * task, int channel, m_host_t host);
+ waits for the first task coming from a given host.. [AL]
+
+ GRAS new functionnalities: [MQ]
+ * Enhance the parsing macro to allow the size of multidimentional objects
+ to be given thru annotations.
+ * New example (and documentation): Matrix Multiplication a la RPC
+ (as when I was young!) and fix a bunch of bugs found on the way.
+
+ GRAS performance improvements: [MQ]
+ [DataDesc]
+ * Reduce the amount of cbps creation/destruction by making it static to
+ datadesc_send/recv() and using a (newly created) cbps_reset (based on
+ dynar_reset ())
+ [Virtu]
+ * Change libdata to a set so that we can search for stuff by ID (and thus
+ reduce the insane amount of dict lookups)
+
+ [Transport]
+ * Actually implement gras_datadesc_copy() so that we don't have to mimick
+ RL communication on top of SG since it's so uneffective.
+ It may also be used for inter-thread communication in RL, one day.
+ * Use gras_datadesc_copy() to exchange messages on top of SG
+ Allows to:
+ - improve message exchange performance on top of SG
+ - deprecate transport_plugin_sg.c:gras_trp_sg_chunk_send() & recv()
+ * Don't exchange on the network the size of the used part of buffer,
+ instead, specify the possible buffer size to read().
+ Advantages:
+ - reduces the amount of read/write calls (one pair per exchange)
+ - reduces the amount of exchanged data (the size)
+ - allows to retrieve all arrived data on receiver side, if we don't need
+ it right now (subsequent read will peek the buffer)
+ - allows the receiver to proceed with the begining of the stream before
+ everything is arrived
+ - make it possible to build an iov transport (using readv/writev)
+ Extra difficulty:
+ - take care of the data with non-stable storage (like stacked data),
+ and bufferize them.
+ * If possible, TCP send uses vector I/O (when writev() is here)
+ - Don't use it for receive since we send data sizes and data on the
+ same stream, so we wouldn't be able to chain large amount of chunks
+ before having to flush the stuff to read the size.
+ * Rework the transport plugin mecanism to simplify it and reduce the
+ amount of pointer dereferencement when searching for the right function
+ to use.
+
+ * I guess that now, we do almost as few system calls as possible while
+ doing as few data copy as possible.
+
+ To improve it further, we could try to send all the sizes first and then
+ all the data (to use iov on receiving size), but it's only a partial
+ solution: when you have 2 dimensional data, the sizes of the second
+ dimension is data of the first dimension, so you need 3 streams.
+
+ I'm not sure the potential performance gains justify the coding burden.
+
+ -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Fri, 21 Oct 2005 14:42:20 +0200
+
+SimGrid (3.00) stable; urgency=high
+
+ SURF:
+ * New! Give the possibility to hijack the surf parser and thus bypass
+ MSG_create_environment and MSG_launch_application. Have a look at
+ examples/msg/msg_test_surfxml_bypassed.c to see how it can be done.
+
+ -- Arnaud Legrand <simgrid-devel@lists.gforge.inria.fr> Sat, 20 Aug 2005 23:25:25 -0700
+
+SimGrid (2.96) unstable; urgency=low
+
+ AKA SimGrid 3 rc 2.
+
+ XBT:
+ * New! Exception handling with setjmp or such (code from OSSP ex) [MQ]
+ This deprecates the xbt_error_t mecanisms.
+ It modifies (simplifies) all XBT and GRAS API.
+ MSG API keeps unchanged (exceptions raised by XBT are catched from
+ within MSG and masked with existing error handling facilities)
+
+ SURF:
+ * New! Add a FATPIPE model. [AL]
+ * New! Add a parallel task model. [AL]
+ * New! Add automatically a loopback interface (in the default
+ network model) if none was precised.
+
+ MSG
+ * Bugfix: MSG_process_resume now works with the current running process.
+ [AL]
+ * New! Add MSG_parallel_task_create and MSG_parallel_task_execute. [AL]
+ * Modification of MSG_task_get_compute_duration. Once a task has been
+ processed, the value returned by this function is now equal to 0. [AL]
+ * New! Add double MSG_task_get_remaining_computation(m_task_t task) and
+ MSG_error_t MSG_task_cancel(m_task_t task). Add a state
+ (MSG_TASK_CANCELLED) to MSG_error_t corresponding to the cancelation
+ of a m_task. For now, MSG_task_cancel only works with computation
+ tasks. [AL]
+ * New! Add double MSG_get_host_speed(m_host_t h) that returns the speed
+ of the processor (in Mflop/s) regardless of the current load on the
+ machine. [AL]
+ * API Change: use proper naming convention for MSG_getClock and
+ MSG_process_isSuspended: MSG_get_clock and MSG_process_is_suspended.
+ [AL]
+ * New! Add void MSG_task_set_priority(m_task_t task, double priority).
+ This function changes the priority of a computation task. This priority
+ doesn't affect the transfer rate. A priority of 2 will make a task
+ receive two times more cpu power than the other ones. This function
+ has been added to suit the needs of Nguyen The Loc and hasn't been that
+ much tested yet. So if it fails, please report it and send me your code.
+ [AL]
+ * API Change: removed all functions and types that were marked "deprecated"
+ since many months. Renamed MSG_global_init_args to MSG_global_init.
+
+ -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Mon, 8 Aug 2005 17:58:47 -0700
+
+SimGrid (2.95) unstable; urgency=low
+
+ XBT
+ * Steal some nice code to GNU pth to fix context detection and usage [AL]
+ * Cleanup in the xbt_config API; add configuration callbacks. [MQ]
+ * Cleanup in the initialization API: the unused "defaultlog" is dead. [MQ]
+
+ SURF
+ * Bugfix: Allow absolute paths for platform description files [MQ]
+ * Bugfix: do free the variables after use. Leads to drastic performance
+ improvement [AL]
+ * Implement max_duration (ie, timeouts) on resources [AL]
+
+ MSG
+ * Implement MSG_config to configure MSG at runtime. xbt_cfg test on a real
+ case ;) [MQ]
+ * Implement MSG_channel_select_from() to help GRAS now that SURF provide
+ the needed support (timeouts) [AL]
+
+ GRAS (new features)
+ * Implement measurement sockets. You can now get the bandwidth between two
+ hosts thanks to AMOK (see below). [MQ]
+ * gras_datadesc_dynar() builds a dynar type descriptor, allowing to send
+ dynar over the network (yeah) [MQ]
+ * Real (even if simplistic) implementation of gras_os_myname() on RL [MQ]
+ * simple/static token-ring example. [Alexandre Colucci and MQ]
+ * Use MSG_channel_select_from() and remove the *slow* hack we had to put
+ in place before [MQ]
+
+ GRAS (bug fixes)
+ * Differentiate the types "char[22]" and "unsigned char[22]" in automatic
+ type parsing. "short" and "long" modifiers were also ignored; other
+ modifier (such as reference level) are still ignored. [MQ]
+ * Embeed the buffer size within the buffer itself on SG. [MQ]
+ That way, send() are atomic and cannot get intermixed anymore (at least
+ the ones which are less than 100k; bigger messages still have the issue)
+ * Array size pushed by the field, not by the field type (or each
+ and every long int will push stuff to the cbps) [MQ]
+ * use select() to sleep since it allows to portably sleep less than one
+ second. [MQ]
+
+ GRAS (minor cleanups)
+ * <project>.Makefile.local (generated from gras_stub_generator) |MQ]:
+ - Do clean .o files
+ - Compile with -g
+ * Type Callbacks now receive the gras_datadesc_type_t they work on as argument.
+ * type category 'ignored' killed as it was never used and were difficult
+ to transmit.
+ * whether a type can cycle or not is now a flag, leaving room for more
+ flags (as "ignored", if we feel the need one day ;)
+ * Rename raw sockets to measurement sockets since "raw" has another
+ meaning in networking community.
+
+ AMOK
+ * Advanced Metacomputing Overlay Kit introduction. It is based over GRAS
+ and offers features not belonging to GRAS but that most applications
+ need. One day, it may be a set of plugins loadable at runtime.
+ * New module: bandwidth
+ bandwidth measurement between arbitrary nodes running this module. [MQ]
+
+ -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Thu, 30 Jun 2005 16:29:20 -0700
+
+SimGrid (2.94) unstable; urgency=low
+
+ The first beta release of SimGrid 3 !
+
+ >>>Arnaud<<<
+ (documentation)
+ * Update the main page and the FAQ. Adding references to gforge.
+
+ (gras)
+ * Add a gras_os_getpid function.
+
+ (msg)
+ * Add MSG_task_get_compute_duration() and MSG_task_get_data_size()
+ * Extend the logs so that they also print PID, hostname, date, ... if
+ available.
+ * Convert the MSG example to the use of xbt_logs instead of PRINT_MESSAGE,
+ and kill the old version which were in testsuite/
+ * Rewrite tools/MSG_visualization/colorize.pl for using with logs instead
+ of PRINT_MESSAGE
+
+ (xbt)
+ * Add xbt_os_time(). As the rest of xbt/portability, this is not public
+ for users. Instead, each programming environment (GRAS, MSG,...) use it
+ when needed to provide such a feature to users.
+ Don't shortcut the mecanism or you will also shortcut the virtualization
+ you need on the simulator.
+
+ >>>Martin<<<
+ (infrastructure)
+ * Cleanups in configury with regard to compile optimization/warning flags.
+ Also add -fno-loop-optimize to any powerpc since it's the optimization
+ killing gcc (< 3.4.0).
+ * Doxygen cleanups: move MSG examples, kill the second Doxygen phase
+ needed by MSG examples complications
+ * Borrow configury beautifications from PHP
+
+ (xbt)
+ * Bugfix: XBT_LOG_NEW_DEFAULT_CATEGORY now compiles without compiler
+ warning (thanks loris for stumbling into this one).
+ * Bugfix: stop loading private headers (gras_config.h) from the public
+ ones (xbt/swag.h).
+
+ (gras)
+ * Change SIMGRID_INSTALL_PATH to GRAS_ROOT in Makefiles generated for user.
+ * Rename gras_get_my_fqdn to gras_os_myname and implement it in the simulator
+ RL would imply a DNS resolver, which is *hard* to do in a portable way
+ (and therefore delayed).
+ * Implement a real timer mecanism and use it in timing macros. This allows
+ to avoid rounding errors and get a 0.000005 sec precision in timing
+ macros. While I was at it, various cleanups:
+ - allow to declare more than one timed section per file (fix a stupid bug)
+ - move some private declaration to the right place
+ - merge conditional execution and timing macros into emulation module
+ - document the module
+ - make sure the module cleanups its mess on gras_exit
+ * Documentation improvements:
+ - (new) how to compile applications using GRAS
+ - (new) emulation support (timing macros)
+
+ -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Fri, 13 May 2005 10:49:31 +0200
+
+SimGrid (2.93) unstable; urgency=low
+
+ Alpha 4 on the path to SimGrid 3 (aka the "neuf-trois" version)
+
+ [Arnaud]
+ - Use Paje properly where used. Still to be sanitized properly.
+ - Portability fix: Add an implementation of the contexts using pthread
+
+ [Martin]
+ (misc)
+ - Add xbt_procname(): returns the name of the current process.
+ Use it to show the current process's name in all logging.
+ (infrastructure)
+ - fix detection of older flex version and the reaction, since we do
+ depend on modern ones (we use lex_destroy)
+ - Better separation of SG and RL in the libs: remove all simulation code
+ from libgras. As a result, this lib is now only 200k when stripped.
+ Some of the xbt modules may also be duplicated (two sets and such) and
+ should be cleaned/killed before SG3.
+ - Insist on using xlC on AIX because of weird problems involving gcc there.
+ - Cleanup the make remote stuff. This is now done by scripts
+ tools/graspe-{master,slave} (GRAS Platform Expender). This is still
+ mainly for our private use, but we're working on changing them to user
+ tools, too.
+ (gras)
+ - Bugfix: flush the socket on close only if there is some *output*.
+ - Bugfix: flush idempotent when there's nothing to send (don't send size=0)
+ (msg)
+ - Add MSG_task_get_name. The task names are mainly for debugging purpose,
+ but anyway.
+
+ -- SimGrid team <simgrid2-users@listes.ens-lyon.fr> Fri, 4 Mar 2005 14:32:37 -0800
+
+SimGrid (2.92) unstable; urgency=low
+
+ Alpha 3 on the path to SimGrid 3
+
+ [Arnaud]
+ (gras)
+ - New! First try of benchmarking macros.
+ - New! First try so that gras_stub_generator generate deployment and
+ remote compilation helpers.
+ (msg)
+ - Bugfix: Initialization fix in msg_test.
+
+ [Martin]
+ (surf)
+ - Bugfix: applied patch to lexer so that it doesn't need a huge heap.
+ (xbt)
+ - Bugfix: let dicts work with NULL content (_foreach didn't) and cleanups
+ (gras)
+ - API Change: gras_os_sleep to take the amount of seconds as a double.
+ Accepting an int was error prone since it was the only location where
+ seconds were coded as such. It leaded to damn rounding errors.
+ - Bugfix: Hard to belive that timers ever worked before this.
+
+ -- SimGrid team <simgrid2-users@listes.ens-lyon.fr> Wed, 23 Feb 2005 22:09:21 +0100
+
+SimGrid (2.91) unstable; urgency=low
+
+ Alpha 2 on the path to SimGrid 3
+
+ [Arnaud]
+ (surf)
+ - Bug fix in the lmm_solver.
+ (msg)
+ - New! Interface to Paje (see http://www-id.imag.fr/Logiciels/paje/)
+ through the function MSG_paje_output.
+ - New! Introducing two new functions MSG_process_kill() and MSG_process_killall().
+ - It is possible to bound the rate of a communication in MSG with
+ MSG_task_put_bounded() (was already in the previous version but I had forgotten
+ to write it in the changelog).
+ - Bug fix to let GRAS run on top of MSG until we move it directly on top
+ of the SURF.
+
+ [Martin]
+ (infrastructure)
+ - Various cleanups to the autotools stuff
+ - Begin to move Gras examples to examples/gras/
+ - Let make distcheck work again (yeah!)
+ (documentation)
+ - documentation overhauled using doxygen.
+ gtk-doc-tools is dead in SimGrid now.
+ - Automatically extract all existing logging categories, and add the list
+ to the documentation (long standing one, to say the less)
+ (gras)
+ - Cleanup the known architecture table. Reorder the entries to group what
+ should be, and use a more consistent naming scheme.
+ (some of the test dataset are still to be regenerated)
+ - New! Allow library to register globals on each process just as userdata
+ does.
+ This is implemented using a xbt_dict and not a xbt_set, so we loose the
+ lookup time (for now).
+ Use it in msg and trp.
+ This cleans a lot the internals and helps enforcing privacy of the
+ headers between the gras components.
+ - New! Add a timer mechanism, not unlike cron(8) and at(1).
+ - Bugfix: gras_os_time was delirious in RL.
+ - Bugfix: gras_trp_select/RL don't run into the wall when asked to select
+ onto 0 sockets.
+ - Reenable GRAS now that it works.
+
+ -- Arnaud Legrand <Arnaud.Legrand@imag.fr> Mon, 14 Feb 2005 14:02:13 -0800
+
+SimGrid (2.90) unstable; urgency=low
+
+ Alpha 1 on the path to SimGrid 3
+
+ * It is a long time since the last release of SimGrid. I'm sorry about
+ that but as I had told you, I was rewriting a lot of things. I apologize
+ to those who had been reporting bugs to me and that I had not answered.
+ If your bug is still in the new version, please tell me. Here is a
+ summary of the main changes.
+
+ * REVOLUTION 1: The SimGrid project has merged with the GRAS project
+ lead by Martin Quinson. As a consequence SimGrid gains a lot in
+ portability, speed, and a lot more but you'll figure it out later.
+ SimGrid now comprises 3 different projects : MSG, GRAS and SMPI.
+ I wanted to release the new MSG as soon as possible and I have
+ broken GRAS, which is the reason why, for now, only MSG is fully
+ functional. A laconic description of these projects is available
+ in the documentation.
+
+ * REVOLUTION 2: I have removed SG and I am now using a new simulation
+ kernel optimized for our needs (called SURF but only the developers
+ should use it). Hence, MSG is now roughly 30 times faster and I think
+ that by rewriting a little bit MSG, I could event speed it up a little
+ bit more. Beside the gain in speed, it is also much easier to encode a
+ new platform model with SURF than it was with SG. More to come...
+
+ * REVOLUTION 3: I have tried to change a little as possible the API of
+ MSG but a few things really had to disappear. The main differences
+ with the previous version are :
+ 1) no more m_links_t and the corresponding functions. Platforms are
+ directly read from a XML description and cannot be hard-coded
+ anymore. The same format is used for application deployment
+ description. The new format is described in the documentation.
+ Have a look in tools/platform_generation. There is a tiny script
+ that converts from the old platform format to the new one. Concerning
+ the application deployment format, parsing the old one is tricky.
+ I think most of you should however be able to convert your files. If
+ it is really an issue, I can write a C code that does the conversion.
+ Let me know.
+ 2) the toolbox tbx does not exist anymore. We now have a library
+ with much more data-structures but without the hash-tables (we have
+ dictionaries that are much faster).
+
+ -- Arnaud Legrand <Arnaud.Legrand@imag.fr> Mon, 31 Jan 2005 10:45:53 -0800
+
+*****************************************************************************
+* Follows the old GRAS changelog. It does not follow the same syntax, but I *
+* don't feel like converting the oldies. (Mt) *
+*****************************************************************************
+
+2005-01-31 Arnaud
+ Version 2.90: "the long awaited one"
+ - Finished rewriting and debugging MSG. Rewrote the documentation.
+ - disable GRAS for now since it needs to be ported to the newest SG
+
+2004-12-16 Martin
+ - Finish the port to windows (using mingw32 for cross-compile)
+
+2004-11-28 Arnaud
+ - Main loop and datastructures of SURF. A cpu resource object is
+ functional. Surf can thus be used to create cpu's with variable
+ performance on which you can execute some actions.
+
+2004-11-15 Martin Quinson
+ - Port to ARM. Simply added the alignment and size descriptions. Should
+ work, but the ARM machines are so slow that I didn't had the opportunity
+ to 'make check' over there yet.
+
+2004-11-15 Arnaud Legrand
+ - Trace manager now written. It uses a heap structure and is therefore
+ expected to be efficient. It may however be speeded up (particularly
+ when many events occur at the same date) by using red and black
+ trees. One day maybe...
+ - Max-min linear system solver written. It uses a sparse matrix
+ structure taking advantage of its expected use. Most operations are
+ O(1) and free/calloc are called as few as possible. The computation of
+ the minimum could however be improved by using a red and black tree
+ (again ! ;).
+
+2004-11-03 Arnaud Legrand
+ - Rename every gras_* function that was in xbt/ to its xbt_
+ counterpart.
+ - Add a heap and a doubly-linked list to xbt
+ - Added a dichotomy to the dictionaries. make check works as well before
+ so I assume that the patch is correct. I do not know however if things
+ run effectively faster than before now. :)
+
+ Inclusion of the SimGrid tree in the GRAS one. The archive is renamed to
+ SimGrid, and the version number is bumped to 2.x
+
+2004-10-29 Martin Quinson
+ - Introduction of the remote errors.
+ They are the result of a RMI/RPC on the remote machine.
+ ErrCodes being scalar values, you can't get the host on which those
+ errors did happen. Extending the error mechanism as in Gnome is possible.
+ No idea yet whether it is a good idea.
+
+2004-10-28 Martin Quinson
+ - Interface revolution: the Starred Structure Eradication.
+ I used to do typedef struct {} toto_t; and then handle *toto_t.
+ Arnaud (and Oli) didn't like it, and I surrendered. Now, you have:
+ - ???_t is a valid type (builded with typedef)
+ - s_toto_t is a structure (access to fields with .)
+ - s_toto is a structure needing 'struct' keyword to be used
+ - e_toto_t is an enum
+ - toto_t is an 'object' (struct*)
+ Exemple:
+ typedef struct s_toto {} s_toto_t, *toto_t;
+ typedef enum {} e_toto_t;
+ Moreover, only toto_t (and e_toto_t) are public. The rest (mainly
+ s_toto_t) is private.
+
+ - While I was at it, all gras_<obj>_free() functions want a gras_<obj>_t*
+ so that it can set the variable to NULL. It was so for dicts and sets,
+ it changed for dynars.
+
+ - Fix a bunch of memleaks in dict_remove
+ - Fix a bug in sg/server_socket opening: it failed all the time.
+
+2004-10-07 Martin Quinson
+ - Speed up dynar lookup operation a bit.
+
+ gras_dynar_get is dead.
+
+ Now, you can choose between gras_dynar_get_cpy (the old gras_dynar_get
+ but should be avoided for efficiency reasons) and gras_dynar_get_ptr
+ (which gives you the address of the stored data).
+
+ gras_dynar_get_as is an helpful macro which allows you to retrieve a
+ copy of the data using an affectation to do the job and not a memcpy.
+
+ int toto = gras_dynar_get_as(dyn,0,int); rewrites itself to
+ int toto = *(int*)gras_dynar_get_ptr(dyn,0);
+
+ It does not really speedup the dynar test because they are
+ setting elements all the time (and look them seldom). But the dict does
+ far more lookup than setting.
+
+ So, this brings the dict_crash test from ~33s to ~25s (200000 elms).
+
+2004-10-05 Martin Quinson
+ - Allow to (en/dis)able the cycle detection at run time.
+
+ Whether we should check for cycle or not is now a property of each
+ datatype. When you think there may be some cycle, use datadesc_cycle_set.
+ datadesc_cycle_unset allow to remove this property when previously set.
+
+ Note that the cycle detection is off by default since it impacts the
+ performance. Watch the data you feed GRAS with ;)
+
+ This property is hereditary. Any element embedded in a structure having it
+ set have it set for the time of this data exchange.
+
+ You should set it both on sender and receiver side. If you don't set it on
+ sender side, it will enter an endless loop. If you forget on receiver
+ side, the cycles won't be recreated after communication.
+
+ - Header reorganization.
+ Kill gras_private.h, each submodule must load the headers it needs.
+
+2004-10-04 Martin Quinson
+ - Interface revolution: do not try to survive to malloc failure.
+
+ Now, gras_malloc and friends call gras_abort() on failure.
+ As a conclusion, malloc_error is not a valid error anymore, and all
+ functions for which it was the only gras_error_t return value are
+ changed. They now return void, or there result directly.
+ This simplify the API a lot.
+
+2004-09-29 Martin Quinson
+ - Re-enable raw sockets.
+ Created by gras_socket_{client,server}_ext;
+ Used with gras_raw_{send,recv}
+ No select possible.
+
+ It should allow to kill the last bits of gras first version soon.
+
+ This is not completely satisfactory yet (duplicate code with
+ chunk_{send,recv}; a bit out of the plugin mechanism), but it should
+ work.
+
+ - Simplify transport plugin (internal) interface by not passing any
+ argument to _server and _client, but embedding them in the socket
+ struct directly.
+
+2004-09-28 Martin Quinson
+ - Finish the port to AIX.
+ autoconf was my problem (segfault within the malloc replacement
+ function. No idea why)
+
+2004-09-16 Martin Quinson
+ - Fix some size_t madness on 64bit architectures.
+
+2004-09-08 Martin Quinson
+ - Reduce the number of system headers loaded, overload some more system
+ calls (such as malloc to cast the result of the system one, and work
+ properly on AIX)
+ - Fix and reintroduce the config support
+
+2004-09-07 Martin Quinson
+ - Source code reorganization to allow Arnaud to surf all over there.
+ - Allow to document the logging categories.
+ - Remove all uppercase from logging categories and useless cleanup in names.
+
+2004-08-18 Martin Quinson
+ Version 0.6.2 (protocol not changed; API changed)
+ - Interface cleanup: gras_msgtype_by_name returns the type (instead of a
+ gras_error_t), and NULL when not found. Functions expecting a msgtype
+ as argument (msg_wait; msg_send) deal with NULL argument by providing a
+ hopefully usefull message.
+ - Portability to prehistoric sparcs again
+
+2004-08-17 Martin Quinson
+ Version 0.6.1 (protocol not changed; ABI not changed)
+ - prealloc some buffers to speed things up
+
+2004-08-11 Martin Quinson
+ Version 0.6 (protocol not changed; ABI expended)
+ - The parsing macro can deal with the references, provided that you add
+ the relevant annotations (using GRAS_ANNOTE(size,field_name))
+
+2004-08-09 Martin Quinson
+ Version 0.5 (protocol not changed; ABI changed)
+ - Allow to off turn the cycle detection code in data exchange at
+ compilation time. It should be at run time, but I'm short of time (and
+ the config stuff is still broken). That way, we keep dict out of the
+ critical path, which is good because the performance is poor:
+ - search not dichotomial yet
+ - dynar give no way to access their content and memcpy everytime
+ - In composed data description (struct, ref and so on), stop foolness of
+ keeping the subtype's ID, but store the type itself. This keeps sets out
+ of the critical path, which is good since they rely on dynar and
+ dictionnaries. The only loose of that is that we cannot detect the
+ redeclaration of a structure/union with another content (but I'm not sure
+ the code detected well this error before anyway). We still can detect
+ the redefinition discrepancy for the other types.
+ - Use a whole bunch of optimisation flags (plus -fno-strict-aliasing since
+ it breaks the code because of type-punning used all over the place).
+ This breaks on all non-gcc architectures (for now).
+
+ All those changes (plus the buffer of last time) allow me to gain 2 order
+ of magnitude on cruel tests consisting of 800000 array of integers on two
+ level of a hierarchical structure (200 secondes -> 4 secondes)
+
+ API change:
+ - the selector of reference must now return the type it points to, not
+ the ID of this type.
+
+2004-08-06 Martin Quinson
+ Version 0.4 (protocol changed; ABI not changed)
+ - Allow to pass --gras-log argument to processes in simulation mode. Really.
+ - New debugging level: trace (under debug) to see effect of GRAS_IN/OUT
+ - Implement a buffer transport, and use it by default (it relies on tcp in
+ real life and on sg in simulation).
+ That's a bit hackish since I had a new field to the structure to store
+ its data without interfering with the subtype ones. Inheritance
+ is tricky in C. And that's a kind of reverse inheritance with one class
+ derivating two classes. Or maybe a game with java interfaces. Anyway,
+ that's damn hard in C (at least).
+ Moreover, I got tired while trying to ensure plugin separation and
+ genericity in SG mode. MSG wants me to do weird things, so let's go for
+ cruel hacks (temporarily of course ;).
+ See comment in transport_private.h:71
+ - do not include all the _interface headers in private but in the files
+ which really need them (to cut the compilation time when they are
+ modified)
+
+2004-07-26 Martin Quinson
+ Version 0.3 (protocol not changed; ABI changed)
+ - Major overhault of the datadesc interface to simplify it:
+ - shorted the function names:
+ s/gras_datadesc_declare_struct/gras_datadesc_struct/ and so on
+ - add a trivial way to push/pop integers into the cbps without malloc.
+ This allows to make really generic sub_type description, which simply
+ pop their size of the stack.
+ - add a function gras_datadesc_ref_pop_arr() which does what users want
+ most of the time: Declare a dynamic array (which pops its size of the
+ stack) and declare a reference to it. Poor name, but anyway.
+ - kill the post-send callback, add a post-receive one
+
+2004-07-23 Martin Quinson
+ Version 0.2 (protocol changed; ABI changed)
+ - add some testing for cpbs in the test cases, and fix some more bugs.
+ This invalidate again the little64 data file, since I cannot regenerate
+ it myself.
+ - remove an awfull optimization in the logging stuff, allowing me to:
+ - understand it again
+ - learn gcc how to check that the argument match the provided format
+ - fix all errors revealed by gcc after that
+ - internal keys of dict are not \0 terminated. Deal with it properly in
+ loggings instead of segfaulting when the user want to see the logs :-/
+
+2004-07-22 Martin Quinson
+ - Fix some stupid bug preventing cbps (callback postit) from working
+
+2004-07-21 Martin Quinson
+ - Some documentation cleanups
+ - remove the useless last argument of msgtype_declare
+ - rename the Virtu functions to fit into the 'os' namespace
+ - move headers src/include -> src/include/gras/ and stop fooling with
+ gras -> . symbolic link
+ - make distcheck is now successful
+
+2004-07-19 Martin Quinson
+ Version 0.1.1
+ - Build shared library also
+ - Install html doc to the right location
+ - stop removing maintainer files in make clean
+ - build tests only on make check
+
+2004-07-13 Martin Quinson
+ version 0.1
+ - No major issue in previous version => change versionning schema
+ - Re-enable little64 convertion test now that Abdou kindly regenerated the
+ corresponding dataset.
+
+2004-07-11 Martin Quinson
+ version 0.0.4
+ - Get it working with any kind of structure (we can compute the padding
+ bytes remotely for all the architectures I have access to)
+ - Implement the structure parsing macro (still not quite robust/complete)
+ - Improvement to the remote testing toysuite
+
+2004-07-10 Martin Quinson
+ [autoconf mechanism]
+ - get ride of a bunch of deprecated macros
+ - actually run the test for two-compliment, not only compile it :-/
+ - test whether the structures get packed (and bail out if yes. Damn.
+ Alignment is a serious matter)
+ - test whether the structures get compacted (but respecting the alignment
+ constraints of each types)
+ - test whether the array fields of structures can straddle alignment boundaries
+ [base]
+ - Damnit, double are bigger than float (typo in creation of 'double' datadesc)
+ (took me 2 hours to find that bug, looking at the wrong place)
+ - Add gras_datadesc_declare_{union,struct}_close(). They must be used
+ before sending/receiving and are used to compute the offsets of fields
+ - Given that padding size depend even on compiler options, keep track of
+ alignment and aligned_size only for the current architecture. Not a big
+ deal since we send structure fields one after the other (seems
+ reasonable).
+ - Add the datastructure used for IEEE paper by the PBIO guys to the test
+ program, let it work on linux/gcc/little32. portability todo.
+
+2004-07-08 Martin Quinson
+ - import and improve remote compilation support from FAST
+ - make sure make check works on half a dozen of machines out there
+
+2004-07-07 Martin Quinson
+ Let's say it's version 0.0.3 ;)
+ - Implement conversions (yuhu!)
+ - Let it work on solaris (beside conversion, of course)
+ - Stupid me, using rand() to generate the conversion datatests in not wise.
+
+2004-07-06 Martin Quinson
+ - Let make dist work, since I'm gonna need it to compile on remote hosts
+ - Let Tests/datadesc_usage write the architecture on which the file was
+ generated as first byte.
+ - Add PowerPC (being also IRIX64), SPARC (also power4) and ALPHA
+ architecture descriptions.
+ - Add datadesc_usage.{i386,ppc,sparc} files being the result of execution
+ on those architectures.
+ - Optimization: send/recv array of scalar in one shoot
+
+2004-07-05 Martin Quinson
+ - YEAH! GRAS/SG and GRAS/RL are both able to run the ping example !
+
+ - Plug a whole bunch of memleaks
+ - each process now have to call gras_{init,exit}. One day, their log
+ settings will be separated
+ - Continue the code factorisation between SG, RL and common in Transport.
+
+2004-07-04 Martin Quinson
+ [Transport]
+ - Redistribution between SG and RL.
+ We wanna have to accept in SG, so move accepted related parts of RL in
+ the common part. (more precisely, the dynar of all known sockets is no
+ more a static in transport.c, but part of the process_data)
+ [Core/module.c]
+ [gras_stub_generator]
+ - Bug fix: Do call gras_process_init from gras_init (wasnt called in RL).
+
+2004-07-03 Martin Quinson
+ - Create a new log channel tbx containing dict, set, log, dynar (to shut
+ them all up in one shot)
+ [DataDesc]
+ - Fix the ugly case of reference to dynamic array.
+ - New (semi-public) function gras_datadesc_size to allow the messaging
+ layer to malloc the needed space for the buffer.
+ [Transport]
+ - gras_socket_close now expect the socket to close (and not its address to
+ put NULL in it after it). This is because the socket passed to handlers
+ is one of their argument (=> not writable).
+ [Messaging]
+ - propagate the interface cleanup from last week in datadesc, ie remove a
+ superfluous level of indirection. User pass adress of variable
+ containing data (both when sending and receiving), and not of a variable
+ being a pointer to the data. Let's say that I like it better ;)
+ The price for that is constructs like "int msg=*(int*)payload" in
+ handlers, but it's a fine price, IMHO.
+ [examples/ping]
+ - Let it work in RL (yuhu)
+
+2004-06-21 Martin Quinson
+ [Transport]
+ - porting SG plugin and SG select to new standards (works almost).
+ - plug memleaks and fix bugs around.
+
+ [DataDesc]
+ - cleanup the prototype of data recv and force users to specify when they
+ want to handle references to objects. Test case working even for cycles.
+ - plug memleaks. Valgrind is perfectly ok with this.
+
+2004-06-12 Martin Quinson
+ [Transport]
+ - cleanup the separation between plugin and main code in plugin creation
+
+2004-06-11 Martin Quinson
+ [Transport]
+ - Reput hook for raw sockets, needed for BW experiments
+ - kill a few lines of dead code
+ [Data description] Interface cleanup
+ - gras_datadesc_by_name returns the searched type or NULL.
+ That way, no variable is needed to use a type desc once, which makes
+ the code clearer.
+ - gras_datadesc_declare_[struct|union]_append_name is removed. The last
+ two parameters were strings (field name, type name), leading to
+ common errors.
+ [Dicos] Interface cleanup
+ - gras_dico_retrieve -> gras_dico_get ; gras_dico_insert -> gras_dico_set
+ This is consistant with the dynar API.
+
+2004-04-21 Martin Quinson
+ [Messaging]
+ - Porting to new standards.
+ [Data description]
+ - interface cleanup.
+ There is no bag anymore, no need to take extra provision to mask the
+ pointers behind "ID".
+ Better splitup of functions between files create/exchange/convert.
+ This is still a bit artificial since convert and receive are so
+ interleaved, but anyway.
+ [Virtu(process)]
+ - add a queued message list to procdata (the ones not matching criteria
+ in msg_wait)
+ - factorize some more code between SG and RL wrt procdata
+ [Tests]
+ - use gras_exit in example to track memleaks
+ - get rid of gs_example now that GS is properly integrated into gras
+ - update run_test to integrate the latest tests (datadesc)
+ [Logging]
+ - rename WARNINGn macros to WARNn since it prooved error-prone
+
+2004-04-19 Martin Quinson
+ [Data description]
+ - register init/exit functions within gras module mechanism
+ - send/receive function.
+ Convertion is not implemented, but short-cutted if not needed.
+ struct/array elements are sent one by one (instead of block-wise), but
+ nobody really cares (yet). Get a prototype before optimizing.
+ - tests (using a file socket) for DD send/receive on:
+ - base types: int, float
+ - array: fixed size, string (ie ref to dynamic string)
+ - structure: homogeneous, heterogeneous
+ - chained list, graph with cycle
+ Believe it or not, valgrind is not too unhappy with the results. The
+ cycle happily segfaults, but the others are ok. And I'm sick of pointers
+ for now.
+ [Transport]
+ [File plugin]
+ - Bugfix when using a filename explicitely (instead of '-')
+
+2004-04-09 Martin Quinson
+ [Transport plugins]
+ - factorize more code between RL and SG in socket creation
+ - Complete the implementation and tests of:
+ o TCP
+ o file (only in RL, and mainly for debugging)
+
+ I lost 3 days to design a portable address resolver, and then decided
+ that the prototype mainly have to run on my box.
+ Addressing portability too early may be like optimizing too early :-/
+ [Tests]
+ - use gras_init in the Tests instead of the crappy parse_log_opt
+ (the latter function is removed)
+ [Conditional execution]
+ - New functions: gras_if_RL/gras_if_SG (basic support for this)
+ [Code reorganisation]
+ - Get rid of libgrasutils.a since it makes more trouble than it solves.
+ Build examples against the RL library, since there is no way to disable
+ its creation for now.
+
+For information, the beginning of coding on GRAS was back in june
+2003. I guess that every line has been rewritten at least twice since
+then.
