SimGrid (3.5) unstable; urgency=low
- Msg
+ 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
- Lua Bindings
- * add layer to set up environment and bypass the XML surf parser
- * modify the entry point, to take into consideration when lua is used only as a platform generator
+ to associate functions to processes, used when bypassing the parser
+ * New functions: MSG_task_set_name(), MSG_task_set_compute_duration()
+
+ LUA Bindings
+ * Add layer to set up environment directly from lua, without XML
+ * In GRAS, the effect of gras_stub_generator can be achieved through
+ lua too (check examples/gras/console/ping_generator.lua)
+ * Modify the entry point, to take into consideration when lua is used only as a platform generator
+
SURF
- * add new callbacks to the CPU & netwok models to create resources
+ * 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 to be a good XML citizen: rename link:ctn to
+ link_ctn and similar changes (also dealed 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 callbacks to the CPU & netwok models to create resources
no need to pass through the parser callbacks to do so.
- * add new function to create routes table via the routing model
- * add generic functions in the public interface
- that allows the user to call SURF 'create_resource' methods from a lua script.
- SIMIX :
- * New function: SIMIX_process_set_function()
- called by MSG_set_function
- SimDag
+ * Add new function to create routes table via the routing model
+ * Add generic functions in the public interface that allows the user to
+ call SURF 'create_resource' methods from a lua script.
+ * 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).
+
+ 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
+
+ SIMDAG
+ * 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).
* 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
* 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.
-
- SIMIX
- * 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}.
+ * new function SD_workstation_get_current_task() that returns the kind
+ of task currently running on a workstation in the sequential access
+ mode.
+ * Task rate should be -1 by default
+ Using 0 as before caused TCP_gamma bound to be ignored.
+ This change modifies (fixes) almost every simdag timings.
+ * Raise some warnings when unexecuted remains at the end of the
+ simulation. This is usually caused by cycles in the DAG.
XBT
* New data container: setset (set of sets of elements)
- * New module: mmalloc (mapped malloc)
+ * New module: mmalloc (mapped malloc, allowing to have several
+ independent segments of malloc)
* New function: xbt_dict_cursor_set_data()
- * New function: xbt_dynar_sort()
+ * New functions: xbt_dynar_sort(), xbt_dynar_compare()
* New function: xbt_dynar_is_empty()
* New function: xbt_fifo_get_last_item()
* Bug fix in xbt_dynar_shrink(): use the right element size
+ * Multiple bug fixes in semaphores which were wrongly implemented
* 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)
GRAS:
* New function: gras_msgtype_get_name()
-
- Build chain: bug fixes and further polishing
+ * Implement gras_agent_spawn in RL too (the prototype changed a bit)
+ * Port GRAS to new SIMIX deployments. This allows gras users to
+ benefit from the lastest 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.
+ * Finally fixed the pmm example. It should not randomly fail anymore
+
+ 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
+
+ Build chain: bug fixes and overall polishing
* 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 (not well tested)
+ 'make package' compiles a binary archive
* Compile java files only on need
+ * Add --cd and --setenv command line options to tesh
+ * Port to windows
+ * Out of source builds are not fully supported yet, but we are close
+ * Enable supernovae and optimization flags by default for our users
+ * Cmake is now stable enough so that we killed the autotools
+
+ Platforms: Add some more examples in examples/platforms
+ * Grid'5000: see www.grid5000.fr
+ * *_30000_hosts.xml: various huge files [mainly scalability testing]
Tracing:
* Tracing system
- 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
+ * New feature to any SimGrid-based simulator: Model-Checking
+ Check SIN#1 for more details.
+
-- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
SimGrid (3.4.1) stable; urgency=low
* 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.