X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/d5c2b7aff3d496f7a2d9affc45b53044d03040b8..ac6bf04227cf1b9ca1e8ed0d0e85f5866745a138:/ChangeLog diff --git a/ChangeLog b/ChangeLog index e4c7963152..288dd8264c 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,20 +1,114 @@ -SimGrid (3.19) NOT RELEASED YET (target: March 20 2018, 16:15:27 UTC) +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- 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. + - 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, + - 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. - s4u::Exec: asynchronous executions (abstraction of background @@ -28,7 +122,7 @@ SimGrid (3.18) Released December 24 2017 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 @@ -39,7 +133,7 @@ SimGrid (3.18) Released December 24 2017 - 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. - Rational: we still want MSG to work; we want newcomers to use S4U. + Rationale: we still want MSG to work; we want newcomers to use S4U. SURF - LMM stuff moved to its own namespace: simgrid::kernel::lmm. @@ -53,10 +147,10 @@ SimGrid (3.18) Released December 24 2017 - 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 @@ -91,13 +185,15 @@ SimGrid (3.18) Released December 24 2017 - #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.