-SimGrid (3.18) NOT RELEASED YET (target: December 24 2017)
+SimGrid (3.19.1) NOT RELEASED YET
+
+ The Fixed ABI Release.
+
+ As you may know, we are currently refactoring SimGrid in deep.
+ Upcoming SimGrid4 will be really different from SimGrid3: modular,
+ standard and extensible vs. layered, homegrown and rigid. C++ vs. C.
+
+ Our goal is to smooth this transition, with backward compatibility
+ and automatic update paths, while still progressing toward SimGrid4.
+
+ SimGrid remains open during works: The last pure SimGrid3 release was
+ v3.12 while all subsequent versions are usable alpha versions of
+ SimGrid4: Existing interfaces remain unchanged, but the new S4U
+ interface is budding and the internals are deeply reorganized.
+
+ Since 2015, we work hard to reduce the changes to public APIs. When
+ we need to rename a public library symbol in S4U, we let your
+ compiler issue an explicative warning when you use the deprecated
+ function. These messages remain for four releases, i.e. for one full
+ year, before turning into an error. Starting with v3.15, your can
+ also adapt to API changes with the SIMGRID_VERSION macro, that is
+ defined to 31500 for v3.15, to 31901 for v3.19.1 and so on.
+
+ Starting with this v3.19.1, our commitment to reduce the changes to
+ the public interfaces is extended from the API to the ABI: a program
+ using only MSG or SimDag and compiled against a given version of
+ simgrid can probably be used with a later version of SimGrid without
+ recompilation. We will do our best... but don't expect too much of
+ it, that's a really difficult goal during such profund refactoring.
+
+ The difference between v3.19 and v3.19.1 is that the former was
+ accidentally breaking the ABI of MSG, while the later is restoring
+ the previous ABI.
+
+ S4U and kernel APIs will still evolve until SimGrid4, with one-year
+ deprecation warnings as currently. In fact, cleaning up these
+ interfaces and converting them to snake_case() is one release goal of
+ v3.20. But don't worry, we are working to smooth this upgrade path.
+
+----------------------------------------------------------------------------
+
+SimGrid (3.19) Released March 20 2018
+
+ The Moscovitly-cold Spring release.
+
+ SMPI user-visible improvements:
+ - Support of MPI_Type_create_subarray
+ - Unimplemented MPI calls now abort (instead of issuing a warning)
+ Some harmless calls around errhandlers still only issue a warning.
+ - MPI_Sendrecv was behaving badly when MPI_PROC_NULL was sender or receiver.
+ - Starting MPI ranks (or even MSG/S4U actors) once the simulation started
+ is now possible (mmap privatization was refactored to this end).
+ Adding new SMPI instances should also be technically doable now.
+
+ SMPI internal cleanups:
+ - Removed index notion from SMPI -- no more "getPid() - 1"!
+ In tracing files, actors are called rank-<PROCESS-ID> but these are
+ NOT the real ranks (tracing several communicators is not supported yet).
+ - Deprecate smpi_process_index() (will be removed in 3.22)
+ - Better testing on classical proxy apps, through an external project:
+ https://github.com/simgrid/SMPI-proxy-apps/
+
+ Documentation
+ - Use a graphical TOC to make it easier to find the documentation you need
+ - Revamp the MSG tutorial
+
+ MSG
+ - Fix MSG_task_get_remaining_work_ratio(): return 1.0 for unstarted tasks.
+ - Remove parameter of MSG_process_killall().
+ Resetting the PID was bogus anyway (several actors could have the same PID).
+
+ S4U
+ - Execution->setHost() can be called after start(), to migrate it.
+ - Comm::test_any() is now implemented.
+ - s4u::Actor now has onCreation() and onDestruction() signals.
+ - Install some kernel header files for the users' plugins and more.
+ Warning, their API is really not stable yet.
+ include/simgrid/kernel/resource/{Action,Resource,Model}.hpp
+ include/simgrid/kernel/routing/*Zone.hpp
+
+ SimDag
+ - SD_task_dependency_add(): remove unused parameters 'name' and 'data'.
+
+ Build System and other cleanups:
+ - Remove unused run-time parameter "tracing/onelink-only".
+ - SimGrid now works with intel compilers (MC still buggy)
+ - Remove XBT_LOG_CONNECT, it should be useless nowadays.
+ - tesh kills subprocesses on timeout (but not on windows)
+
+ PLATFORM:
+ - Rename FULLDUPLEX into SPLITDUPLEX (old name still accepted)
+
+ Fixed bugs:
+ - #194: Feature request: simgrid::s4u::Comm::test_any()
+ - #245: migrating an actor does not migrate its execution
+ - #254: Something seems wrong with s4u::Actor::kill(aid_t)
+ - #256: Modernize FindSimGrid.cmake
+ - #257: Fix (ab)use of CMake install
+
+----------------------------------------------------------------------------
+
+SimGrid (3.18) Released December 24 2017
+
+ The "Ho Ho Ho! SimGrid 4 beta is coming to town" release.
+
+ MSG IS NOW DEPRECATED. Please use S4U for new projects.
+ - Support for MSG should not be removed from SimGrid before 2020,
+ but future evolutions will be limited to the integration of
+ user-provided patches.
S4U New features
- s4u::onDeadlock() signal, run before stopping the simulation.
Mailbox::getCname() instead to get a char*.
- Storage::getName() changed to return a std::string, use
Storage::getCname() instead to get a char*.
- - s4u::allStorages() becomes s4u::getStorageList(whereTo)
+ - s4u::allStorages() becomes s4u::getStorageList(whereTo)
to have both allocation and deallocation of the map in user space.
MSG
name implies on both sequential and parallel tasks.
- Both changes fix GitHub's #223 using PR #237 as a basis.
Thanks Michael Mercier.
+ - Most examples were converted to S4U and hidden elsewhere at tests.
+ Rationale: we still want MSG to work; we want newcomers to use S4U.
SURF
- LMM stuff moved to its own namespace: simgrid::kernel::lmm.
- Live migration is getting moved to a plugin. Dirty page tracking is
the first part of this plugin. This imply that VM migration is now
only possible if one this function is called :
- - C/MSG: MSG_vm_live_migration_plugin_init()
+ - C/MSG: MSG_vm_live_migration_plugin_init()
- C/C++: sg_vm_live_migration_plugin_init()
- Java: Msg.liveMigrationInit()
- For C and C++, "simgrid/plugins/live_migration.h" also has to be
+ For C and C++, "simgrid/plugins/live_migration.h" also has to be
included.
XBT
- #248: Kill of finished processes leads to segfault
- #240: xbt_cond_wait_timeout should gracefully return for C apps
- #239: please implement signal s4u::onDeadlock()
- - #230: segfaults when exit() without run()
+ - #230: segfaults when exit() without run()
- #225: s4u::Actor::kill() doesn not really kill victims in a join()
- #223: MSG_task_get_flops_amount() not working with parallel tasks
- - #222: Actor::kill() doesn't really kill and segfaults
- - #221: odd LMM warning when killing an actor
+ - #222: Actor::kill() doesn't really kill and segfaults
+ - #221: odd LMM warning when killing an actor
- #120: Memory leak when the processes are forcefully killed
+----------------------------------------------------------------------------
+
SimGrid (3.17) Released October 8 2017
The Drained Leaks release: (almost) no known leaks despite the tests.
