-SimGrid (3.21) NOT RELEASED (Release Target: September 23. 2018, 1:54 UTC)
+----------------------------------------------------------------------------
+
+SimGrid (3.24.1) NOT RELEASED YET (v3.25 expected December 22. 2029, 04:19 UTC)
+
+Fixed bugs (FG#.. -> framagit bugs; FG!.. -> framagit merge requests):
+ - GH#31: [MC] please provide an option to make MPI_Send asynchronous
+ - GH#305: Unscheduled tasks are still excuted
+ - FG!19: Removing RngStream
+
+----------------------------------------------------------------------------
+
+SimGrid (3.24) October 9. 2019
+
+The Clean Disk Release.
+
+S4U:
+ - Introduce a s4u::Disk interface to manage the newly introduced <disk>
+ tag. s4u::Disk is called to supplant s4u::Storage in a near future. It
+ thus becomes the default resource to execute I/O operations. Examples
+ and the file system plugin have been modified to use disks instead of
+ storage elements. Storage can still be used but is doomed to disappear.
+ Users are thus adviced to update their simulators accordingly.
+ - Barrier::wait returns SG_BARRIER_SERIAL_THREAD for (only) one actor
+ for consistency with pthread_barrier_wait()
+ - Host::get_englobing_zone() returns the englobing netzone
+ - Actor::on_destruction is now called in the destructor
+ Actor::on_termination new signal called when the actor terminates
+ its code.
+ - Global signals are now part of the Engine:
+ - on_platform_creation: after config settings, before the XML parsing
+ - on_platform_created: right after the XML parsing
+ - on_time_advance: each time the clock advances
+ - on_simulation_end: after simulation, before cleanups
+ - on_deadlock: as the name implies.
+ - C bindings:
+ - sg_{actor,host,link}_{data,data_set}() now all exist.
+ Use them to attach user data to the object and retrieve it.
+
+Models:
+ - Introduce an experimental Wifi model. It sounds reasonable
+ according to the state of the art, but it still has to be properly
+ validated, at least against ns-3 if not against reality.
+ - Improved the usability of ns-3. Several bugs were ironed out.
+ - host_energy: Wattage was expressed as 'idle:oneCore:allCores'.
+ It is now expressed as 'idle:epsilon:allCores' to properly model the
+ consumption of non-whole tasks on mono-core hosts. More info in the doc.
+
+MSG:
+ - convert a new set of functions to the S4U C interface and move the old MSG
+ versions to legacy (MSG_process_self*, MSG_process_{un}ref, ...)
+
+SMPI:
+ - Fortran bindings for DVFS have been removed.
+ - Add support for MPI_Irsend, MPI_Rsend, MPI_Rsend_init, MPI_Bsend,
+ MPI_Ibsend, MPI_Bsend_init, MPI_Buffer_attach, MPI_Buffer_detach
+ - SMPI can now be selected by cmake's find_module(MPI) with
+ MPI_C_COMPILER, MPI_CXX_COMPILER, MPI_Fortran_COMPILER variables.
+ - Add support for MPI Errhandlers in Comm, File or Win. Default errhandler is now
+ MPI_ERRORS_ARE_FATAL, so codes which were sending warnings may start failing.
+ - trace-call-location can be used with TI traces, and replayed, and is compatible
+ with smpi/comp-adjustment-file.
+ - sleep events are now correctly traced/replayed.
+ - Default for trace-call-location is now to use file names and not full paths.
+ To revert to previous behavior (in case of collision of filenames), option
+ "smpi/trace-call-use-absolute-path" can be set to yes.
+
+Model-Checker:
+ - Use the included xxHash as an hash implem when C++14 is usable.
+ - Option model-checker/hash was removed. This is always activated now.
+ - New option smpi/buffering controls the MPI buffering in MC mode.
+ - MPI calls now MC_assert() that no MPI_ERR_* code is returned.
+ This is useful to check for MPI compliance.
+
+Documentation:
+ - New section on plugins: how to define a new one, and existing ones.
+
+XBT:
+ - xbt_mutex_t and xbt_cond_t are now marked as deprecated, a new C interface
+ on S4U is already available to replace them by sg_mutex_t and sg_cond_t.
+
+XML:
+ - Introduce the <disk> tag as a replacement of the <storage>, <storage_type>,
+ and <mount> tags. The rationale is finish to decouple what should be handle
+ by SimGrid kernel (i.e., resources and activities) from plugins built in
+ user space (e.g., the file system plugin). This new tag currently accepts
+ only three attributes (id, read_bw, and write_bw). All the other information
+ that was declared with the storage related tags now has to be expressed as
+ properties. An example of platform using this new tag is available at
+ examples/platforms/hosts_with_disks.xml
+
+tesh:
+ - 'expect signal' can now accept more than one potential signal.
+
+Fixed bugs (FG#.. -> framagit bugs; FG!.. -> framagit merge requests):
+ - FG#28: add sg_actor_self (and other wrappers on this_actor methods)
+ - FG#29 and FG#33: provide a new C API to mutexes and condition variables
+ - FG#30: convert MSG_process_{un}ref to sg_actor_{un}ref
+ - FG#31: per-actor data
+ - FG#34: SG_BARRIER_SERIAL_THREAD?
+ - FG#35: model-checker does not like buster-produced binaries
+ - FG!13: MC: complete workaround in the error msg seen on modern systems
+ - FG!15: execute_flops now logs compute
+ - FG!16: Fix the ns-3 bindings when several flows are simultaneously finishing
+ - FG!17: ns-3: unblock the right number of communications + others issues
+ - FG!18: Improving the performance of the ns-3 bindings
+ - GH#189: Energy consumption of parallel tasks
+ - GH#219: Error in the throughput of TCP transfer
+ - GH!330: Minor polishing of English: Configuring_Simgrid
+ - GH!331: Fix a doc error about actors (Tutorial_algorithms)
+ - GH!332: Add '-O0' flag for: cmake -DCMAKE_BUILD_TYPE=Debug
+ - GH!334: Rework energy plugin, again
+
+----------------------------------------------------------------------------
+
+SimGrid (3.23.2) July 8. 2019
+
+Documentation:
+ - Nicer introduction page.
+ - Migrate the "Deploy your application" page to the new doc.
+ - Move Java as a subtree of MSG.
+
+General:
+ - Rename simgrid::TimeoutError to simgrid::TimeoutException.
+
+XBT:
+ - Drop xbt_dynar_sort_strings().
+
+Bugs:
+ - Really fix FG#26: Turning off a link should raise NetworkFailureException
+ - FG#27: Wrong exception thrown to wait_any when link is turned off
+ - GH#328: Java: Canceling multiple tasks in a single vm/host
+
+----------------------------------------------------------------------------
+
+SimGrid (3.23) June 25. 2019
+
+The Exotic Solstice Release.
+
+General:
+ - SunOS and Haiku OS support. Because exotic platforms are fun.
+ - Stop setting random seed with srand48() at initialization.
+ - Use addr2line as a fallback for stacktraces when backtrace is not available.
+ - Build option -Denable_documentation is now OFF by default.
+ - Network model 'NS3' was renamed into 'ns-3'.
+
+Python:
+ - Simgrid can now hopefully be installed with pip.
+
+S4U:
+ - wait_any can now be used for asynchronous executions too.
+
+XBT:
+ - New log appenders: stdout and stderr. Use stdout for xbt_help.
+ - Drop xbt_dict_dump.
+
+SMPI:
+ - SMPI now reports support of MPI3.1. This does not mean SMPI supports all MPI 3 calls, but it was already the case with 2.2
+ - MPI/IO is now supported over the Storage API (no files are written or read, storage is simulated). Supported calls are all synchronous ones.
+ - MPI interface is now const correct for input parameters
+ - MPI_Ireduce, MPI_Iallreduce, MPI_Iscan, MPI_Iexscan, MPI_Ireduce_scatter, MPI_Ireduce_scatter_block support
+ - Fortran bindings for async collectives.
+ - MPI_Comm_get_name, MPI_Comm_set_name, MPI_Count support.
+
+Model-checker:
+ - Remove option 'model-check/record': Paths are recorded in any cases now.
+ - Remove option 'model-check/sparse-checkpoint': Checkpoints are now
+ always sparse. That's an immense gain in memory, and can even be
+ faster because of cache effects. So there is no need to clutter the
+ code to allow the user to go for the unefficient mode.
+
+Network models:
+ - Remove the lagrange-based models (Reno/Reno2/Vegas). The regular
+ models proved to be more accurate than these old experiments.
+
+Fixed bugs (FG=FramaGit; GH=GitHub -- Please prefer framagit for new bugs)
+ - FG#1: Broken link in error messages
+ - FG#2: missing installation documentation
+ - FG#3: missing documentation in smpirun
+ - FG#6: Python bindings not available on PyPI
+ - FG#7: simple cmake call requires doxygen
+ - FG#8: make python bindings an optional dependency
+ - FG#10: Can not use MSG_process_set_data from SMPI any more
+ - FG#11: Auto-restart actors forget their on_exit behavior
+ - FG#12: -Denable_lto=OFF doesn't disable LTO
+ - FG#13: Installs unstripped file 'bin/graphicator'
+ - FG#14: Installs the empty directory 'doc/simgrid/html'
+ - FG#15: Setting -Denable_python=OFF doesn't disable the search for pybind11
+ - FG#17: Dead link in doc (pls_ns3)
+ - FG#20: 'tesh --help' should return 0
+ - FG#21: Documentation link on http://simgrid.org/ broken
+ - FG#22: Debian installation instruction are broken
+ - FG#26: Turning off a link should raise NetworkFailureException exceptions
+ - GH#133: Java: a process can run on a VM even if its host is off
+ - GH#320: Stacktrace: Avoid the backtrace variant of Boost.Stacktrace?
+ - GH#326: Valgrind-detected error for join() when energy plugin is activated
+
+----------------------------------------------------------------------------
+
+SimGrid (3.22) April 1. 2019
+
+The Easter Christmas Release (this one is somewhat late).
+
+Python:
+ - We are excited to introduce the SimGrid/S4U interface to your neighborhood
+ - Not complete yet: asynchronous activities (amongst others) are still missing
+ - Still ongoing: the interface may change in the future. We need more
+ testers! Please report any glitches.
+ - No new project using Java should start now. Please switch to Python.
+
+General:
+ - Some of the internal cleanups may lead to speed improvements:
+ - The hard limitation on the amount of simulated actors with
+ Java+Mac was removed. Now, the available memory is the only limit.
+ - Our refcounting was tidyied, leading to 10% speedups in some cases.
+ - We are still working on making our code robust to the actor kills
+ and hosts' churn. Things are improving, but it's not perfect yet.
+ - Replaced our own code to display a backtrace (that was forking addr2line)
+ with the Boost.Stacktrace library.
+ You won't see your backtraces without this optional dependency.
+ - Bump cmake dependency to 3.5 (provided by Ubuntu 16.04).
+ - Stop setting random seed with srand() at initialization.
+
+XML
+ - In <host> and <peer>, 'availability_file' is now 'speed_file'.
+ XML file version remains 4.2 since old files are still compatible.
+
+Java:
+ - Process termination which was broken at version 3.21 has been repaired.
+ - Expose host load plugin: loadInit, getCurrentLoad, getComputedFlops, getAvgLoad
+ - Hide the examples into examples/deprecated. New users should use Python.
+
+MSG:
+ - Drop MSG_process_create_from_stdfunc() from the API.
+ This C++ function was a pimple in the C API, made necessary at some
+ point by the Java bindings. This is fixed now.
+ - Hide the examples into examples/deprecated. New users should use S4U.
+ - MSG_process_create and MSG_process_attach now crash if the host used
+ to run this process is off.
+ - Fix the protype of MSG_process_on_exit()
+ Now use (int,void*) callbacks instead of (void*,void*) ones.
+ The implementation was ways too messy to actually work, I guess.
+
+SMPI:
+ - Change the way SMPI_SAMPLE_* macros work to avoid invalidating cache
+ too often and provide more accurate timings.
+ - Add -gdb, -lldb, and -vgdb shortcuts to help debug MPI codes with smpirun
+ - MPI_Alltoallw support
+ - Partial MPI nonblocking collectives implementation: MPI_Ibcast, MPI_Ibarrier,
+ MPI_Iallgather, MPI_Iallgatherv, MPI_Ialltoall, MPI_Ialltoallv, MPI_Igather,
+ MPI_Igatherv, MPI_Iscatter, MPI_Iscatterv, MPI_Ialltoallw.
+ - MPI_Request_get_status, MPI_Status_set_cancelled, MPI_Status_set_elements
+ support
+ - Basic implementation of generalized requests (SMPI doesn't
+ allow MPI_THREAD_MULTIPLE) : MPI_Grequest_complete, MPI_Grequest_start
+
+XBT:
+ - Drop sg_cmdline. Please use xbt_cmdline instead.
+ - Drop the C xbt_os_mutex_t; Use the C++11 std::mutex.
+ - Drop the C xbt_os_sem_t; Use the C++ xbt::OsSemaphore.
+ OsSemaphore is implemented in a portable way with C++11 threads.
+ This should allow much more threads to be created at the same time,
+ allowing Mac and Java users to simulate many more actors.
+ - Implement the 'thread' factory with std::thread instead of xbt ones.
+ It is not possible to set the stack size with threads anymore, but
+ -fsplit-stack is the way to go nowadays when using threads.
+ - Drop the xbt_os_thread_t module (now unused)
+ - Drop xbt_ex_display(), use simgrid::xbt::log_exception() instead.
+ - Drop xbt_str_join_array().
+ - Drop cunit, use Catch2 instead.
+
+Kernel:
+ - Many cleanups in the kernel::activity namespace. This was long
+ overdue, and shall open the path to many future endeavors.
+
+Fixed bugs:
+ - #132: Java: a process can not shut down its own host
+ - #220: S4U: detached send causes exception if sender terminates soon after sending
+ - #261: Document the parameters of parallel execution's constructor
+ - #300: [s4u] BarrierPtr is missing
+ - #314: SMPI args internal cleanup
+ - #316: Fix a bug related to the CPU utilization of multi-core VM
+ - #318: Invalid trace file when using option --cfg=tracing/smpi/display-sizes:yes
+ - #324: S4U: Attempting to create an actor on turned off host segfaults instead of throwing
+ - #325: Turning off a host has different behavior on sleeping actors and computing actors
+
+----------------------------------------------------------------------------
+
+SimGrid (3.21) October 3. 2018
+
+The Restarting Documentation (TRD) Release.
+
+Documentation:
+ - Convert the user manual to Sphinx for improved usability.
+ Unstable version now hosted on https://simgrid.frama.io/simgrid
+ Many glitches remain; stay tuned.
+ - Restrict the Doxygen reference API to the installed header files.
+ (documenting all internals this way is overkill + doxygen scales badly)
+ - New tutorial on S4U (highly inspired from the old MSG one, but with
+ a git repository to fork as a starting point, and a docker image)
+ - Started but not finished a SMPI tutorial inspired from the JLPC'14 one.
+ - The Developper manual is still to be converted (not compiled until then)
+ - Some parts are still missing in this conversion (such as the
+ platform and deployment sections) while others were blindly converted
+ and would need more love (such as the configuration flags).
+ Things will certainly further improve in the future releases.
+
+S4U new features:
+ - Fully reimplement auto_restart mechanism that was utterly broken
+ (fix #22, #131 and #281 that were all very related)
+ - Implement semaphores (fix #303 and #291)
+ - When creating an actor from a function and its parameters,
+ move-only parameters are not allowed anymore, as it would prevent
+ the actor to be restartable if its parameters are consumed on run.
+ - s4u::Io: IOs go asynchronous as activities. New methods in s4u::Storage:
+ - io_init(sg_size_t, s4u::Io::OpType) to create a READ or WRITE asynchronous
+ IO operations that can be started, waited for, or canceled as a regular
+ activity.
+ - read_async(sg_size_t) and write_async(sg_size_t) which are wrappers on
+ io_init() + start()
+
+Tracing:
+ - Rename 'power' and 'power_used' variables into 'speed' and 'speed_used'
+ - New host variable: 'core_count'
+
+XBT:
+ - Remove xbt_os_thread_specific features
+ - Remove portability wrapper to condition variables
+ - Remove xbt_os_thread_yield()
+
+SMPI:
+ - MPICH collective selector now mimics MPICH 3.3b
+ - OpenMPI collective selector now mimics OpenMPI 3.1.2 (default "tuned" setting)
+ - MPI_Init(NULL,NULL) is now allowed
+ - smpi/wtime option now injects time in gettimeofday or clock_gettime calls
+ - Command-line arguments should now be handled properly in Fortran simulations
+ - MPI Attributes and related callbacks should work in Fortran
+ - Apps using C + Fortran should now work
+ - MPI_* calls now check for non MPI_SUCCESS return values and emit warnings
+ - Support MPI_Error_String
+
+Java:
+ - Due to an internal bug, Msg.run() must now be your last line.
+ We hope to fix it in a future release, and we are sorry for the inconvenience.
Fixed bugs:
+ - #22: Process autorestart seem to only work with CAS01 cpus
+ - #56: Feature request: dynamic SMPI replay
+ - #93: simgrid should not eat --help
+ - #111: How to change the loopback link characteristics?
+ - #116: Platform cluster radical
+ - #117: Platform cluster/host order
+ - #129: Replay_multiple on steroid
+ - #131: Java : autostart does not work
+ - #143: Setting a breakpoint at a given time
+ - #235: Network energy models should be integrated
+ - #264: Add ptask L07 resource tracing
- #271: Dynamic and manual replay of SMPI traces
- #279: Breakpoints option uses time deltas instead of absolute time
+ - #281: Daemonized actor no longer daemonized after an auto-restart
+ - #282: TIT convertor erase traces when using absolute path in the trace list file
+ - #285: segfault when a s4u actor kills itself with msg process tracing activated
+ - #286: Pajé traces are not exposing the number of cores
+ - #287: Command-line parsing should stop when encountering '--'
+ - #288: MPI_Init(NULL, NULL)
+ - #289: Improve documentation of Actor::on_destruction and this_actor::on_exit()
+ - #290: Method to check if a mailbox has a message ready to be consumed
+ - #291: [s4u] semaphores do not seem available yet
+ - #294: Alltoall collective implementation of mpich
+ - #295: Starting a Host as OFF is not supported
+ - #296: DTD too permissive
+ - #299: Add a s4u barrier example
----------------------------------------------------------------------------
* VM I/O related things:
- Ignored parameter of vm_create: core_nb, disk_path and disk_size.
- Unimplemented save/restore methods
- * MSG_as_router_get_property_value() was redundent with
+ * MSG_as_router_get_property_value() was redundant with
MSG_environment_as_get_property_value().
- Removed MSG_as_router_*propert*() functions
- Added MSG_environment_as_set_property_value() for consistency
- * xbt heterogeneous dictionnaries (created with xbt_dict_new()).
+ * xbt heterogeneous dictionaries (created with xbt_dict_new()).
Well, they are still there for now, but deprecated with a warning.
Please switch to xbt_dict_new_homogeneous() before this is removed
for real.
flops that a <host>, <peer>, <cluster> or <cabinet> can deliver per second.
- In <trace_connect>, attribute kind="POWER" is now kind="SPEED".
- In <host> and <link>, attributes availability and state are gone.
- It was redundent with state and availability traces, and with peak values.
+ It was redundant with state and availability traces, and with peak values.
- In <cluster>, attributes availability_file and state_file are gone.
It was too complex and unused.
- Kill <gpu>. Was not doing anything.
* 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.
+ the beginning, 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
* Fix a bug preventing the tasks from begin garbage collected.
MSG
- * Fix a bug occuring when a host involved in a communication fails.
+ * Fix a bug occurring 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.
o network_model -> network/model
o workstation_model -> workstation/model
* New configuration variables:
- o network/bandwidth_factor: correction to bandwith
+ o network/bandwidth_factor: correction to bandwidth
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
- 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_dump() for debugging 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
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
+ * Add an example 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,
**************************************
*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
+ 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. Sorry for the inconvenience.
. Lesson 8: Handling errors through exceptions
. Lesson 9: Exchanging simple data
. Lesson 10: Remote Procedure Calling (RPC)
- . Lesson 11: Explicitely waiting for messages
+ . Lesson 11: Explicitly waiting for messages
. Recapping of message passing features in GRAS
- A HOWTO section containing:
o HOWTO design a GRAS application
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]
+ * New function: xbt_backtrace_display(). Sweet while debugging [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]
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]
+ and why they come from when they are not caught in time [AL, MQ]
SURF:
* Bugfix: Do repport the error when two non-connected hosts try to
- 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
+ - allows the receiver to proceed with the beginning of the stream before
everything is arrived
- make it possible to build an iov transport (using readv/writev)
Extra difficulty:
* New! Exception handling with setjmp or such (code from OSSP ex) [MQ]
This deprecates the xbt_error_t mechanisms.
It modifies (simplifies) all XBT and GRAS API.
- MSG API keeps unchanged (exceptions raised by XBT are catched from
+ MSG API keeps unchanged (exceptions raised by XBT are caught from
within MSG and masked with existing error handling facilities)
SURF:
- s_toto is a structure needing 'struct' keyword to be used
- e_toto_t is an enum
- toto_t is an 'object' (struct*)
- Exemple:
+ Example:
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
- 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
+ dictionaries. 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.
for now.
[Transport]
[File plugin]
- - Bugfix when using a filename explicitely (instead of '-')
+ - Bugfix when using a filename explicitly (instead of '-')
2004-04-09 Martin Quinson
[Transport plugins]
