X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/2dead43d035ddd8f41346b46d6b517a6f0733763..2ba8549e0a8371efc09c66bad197097f88d93366:/ChangeLog diff --git a/ChangeLog b/ChangeLog index 2b319b3969..7567984e5b 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,61 +1,222 @@ ---------------------------------------------------------------------------- -SimGrid (3.24.1) NOT RELEASED YET (v3.25 expected December 22. 2029, 04:19 UTC) +SimGrid (3.26.1) NOT RELEASED YET (v3.27 expected March 20. 2021, 09:37 UTC) + +User-visible changes: + - Removed some option aliases that were deprecated since v3.23 (June 2019) + - 'verbose-exit' is now 'debug/verbose-exit' + - 'simix/breakpoint' is now 'debug/breakpoint' + - 'clean-atexit' is now 'debug/clean-atexit' + +S4U: + - Define new template functions Mailbox::get_unique(), returning a std::unique_ptr. + - Functions Mailbox::get() and Mailbox::get_async() are now templated with the + type of the pointee. Untyped functions are deprecated. Use Mailbox::get() + or Mailbox::get_async() if you really want to play with void*. + - Unify the interface of Activity::on_{start/activity} + - New function: Comm::get_dst_data() + - New function: Comm::set_payload_size() to set the amount of bytes to simulate. + - New functions: Comm::sendto_{init,async} to initiate a communication + on between two (possibly remote) hosts. + +Documentation: + - New section: Configuring the logs from the command line. + - New section: Programming API of logs. + +---------------------------------------------------------------------------- + +SimGrid (3.26) December 15. 2020 + +The Release release (the French lockdown was eased today). + +Important user-visible changes: + - SimGrid now requires a compiler with C++14 support. + Sibling projects should upgrade their FindSimgrid.cmake + - Surf precision default value is now 1e-9, instead of 1e-5. This was changed as + several users had difficulties to understand issues when using high bandwidth or + small latency events. The new value was already the default for SMPI and + should not cause too much performance hit. It can change some simulation + timings if simulation was skipping a lot of small events (which was actually + an issue per see). The old value can be restored with --cfg=surf/precision:1e-5. + - On some network models (L07, CM02, LV08), an implicit loopback link is created + for local communication. Default bandwidth was 500MBps and latency was 15µs, + which was rather bad. Default values have been changed to 10GBps and 0 latency. + Options network/loopback-lat and network/loopback-bw have been added to adapt + these values if needed. Network and routing models already providing separate + loopbacks (clusters and such) are not impacted by this change. + - SMPI now adds 16 bytes of header to each message sent, in order to simulate + metadata that are added to each MPI message by MPI libraries (tag, + src/dest, and communicator information). This may change simulation times + for very small message sizes, but should be more realistic. + +New features: + - New routing 'WiFi' that makes it easier to specify a wifi network zone. + - New plugins: wifi_energy and link_load. See the associated examples. + - New examples: wifi networks, and communication suspend. General: -- Upgrade documented Java dependency to Java 8 (earlier versions don't work). + - LTO is now enabled for Intel/clang compilers. + - LTO behavior on GCC can be parameterized using LTO_EXTRA_FLAG in cmake. + Setting it to "auto" will use all available cores, while setting it to n will + use n cores to speedup link step (usage: cmake -DLTO_EXTRA_FLAG=4). + - Remove obsolete runtime option 'contexts/parallel-threshold'. + - Runtime option 'tracing/msg/process' renamed to 'tracing/actor'. The old name + has been kept for compatibility. + - Finally remove obsolete snake_case() aliases for runtime options. + - Further improve the documentation. S4U: -- Actor: Merge signals on_migration_start/end into on_host_change -- Actor: Rename migrate() into set_host() -- Disk: Allow users to get the read and write nominal bandwidth values -- Exec: Implement wait_for(timeout) -- Io: Implement wait_for(timeout) + - the on_exit() of each actor is also executed when the simulation deadlocks. + - New functions: s4u::Activity:: suspend(), resume() and is_suspended() + An example is provided for s4u::Comm but it should work with Exec and Io. + +SMPI: + - Update proxy apps coverage of new ECP apps: 60+ apps now tested nightly on + https://framagit.org/simgrid/SMPI-proxy-apps + - MPI/IO: supports names starting with "./" + - Fortran: many MPI/IO bindings, support for MPI_UB/LB, C MPI_INT/FLOAT/DOUBLE + datatypes. + - smpicc/cxx/ff/f90 now will actually perform definition checks at link time. When + building shared libraries, this may cause issues, so environment variable + SMPI_NO_UNDEFINED_CHECK can be added to disable this. + - most temporary files should now be created in /tmp dir (or equivalent). + If this one does not allow execution of code (noexec flag), this may cause issues. + Please use another tmp directory (using TMPDIR or equivalent system variable) + in this case. + +Model-Checker: + - A large refactoring is ongoing, but this should be transparent for users so far. + +XBT: + - Drop xbt_str_split(). + +C binding and interface: + - The return type of the sg_actor_on_exit() callbacks is now 'void' + (int value was previously ignored) + - Many C functions were renamed to follow a common naming style + (sg_object_get_something and sg_object_set_something). As usual, the deprecated + names are kept until version 3.30. + - Many MSG tests were converted to the new S4U's interface in C, that + was extended for that. + +Fixed bugs (FG#.. -> FramaGit bugs; FG!.. -> FG merge requests) + (FG: issues on Framagit; GF: issues on GForge; GH: issues on GitHub) + - FG#41: Add sg_actor_create C interface + - FG#43: xbt::random needs some care + - FG#48: The Impossible Did Happen (yet again) + - FG#50: Suspending an actor executed at the current timestamp fails + - FG#52: Zero-seconds timeout : "That's in the past already" + - FG#53: Crash while using ns-3 network model + - FG#54: How to suspend a comm? + - FG!22: Stochastic Profiles + - FG!24: Documentation and fix for xbt/random + - FG!35: Add a modeling hint for parallel links in doc + - FG!36: [xbt/random] Read/Write the state of the RNG + - FG!42: Link cumulated load plugin + - FG!44: Test condition variable wait_until+notify_all + - GF#18137: Allow different stack sizes? + - GH#128: Parallelization of simulation with --cfg=contexts/nthreads + - GH#139: Allow pthread creation in SMPI + - GH#336: Packet-level simulation using SMPI? + - GH#345: Error in the LMM while migrating a VM + - GH#346: [SMPI] error while loading shared libraries: libsimgrid.so + - GH#352: pip install / python setup.py install fail to find pybind11 + - GH!337: Fix link_energy plugin for wifi platforms + - GH!339: Add Mailbox set_receiver method to python binding + - GH!344: Cast hugepages macros parameters to int64 + +---------------------------------------------------------------------------- + +SimGrid (3.25) February 2. 2020 (aka 02 02 2020) + +The Palindrom Day Release. + +Important user-visible changes: + - Improve the Python usability (stability and documentation). + - A nasty synchronization bug was ironed out, see also below. + - Python's doc was organized as a separate tree, now integrated with C++. + - C bindings of S4U were not part of the doc. + - The C++ doc was also improved as methods are now split by theme. + - Further deprecate MSG: you now have to pass -Denable_msg=ON to cmake. + - This is mandatory to use the Java bindings. + - OFF by default; The plan is to completely remove MSG by 2020Q4 or 2021Q1. + - SimDAG++: Automatic dependencies on S4U activities (experimental) + - Some features are already implemented but not all of them + - Cannot block an activity until it's scheduled on a resource + - No heterogeneous wait_any() that would mix Exec/Comm/Io activities. + - See examples/s4u/{io,exec,comm}-dependent for what's already there. + +General: + - Upgrade documented Java dependency to Java 8 (earlier versions don't work). + - Drop support for Viva/Triva (old visualization tools), hence removed + TRACE_get_node_types() and TRACE_get_edge_types() functions. + +Python: + - Require pybind11 version 2.4. + - Greatly improve locking during context switches with Python. + - Declaring Python callbacks to this_actor::on_exit is now working. + - No more tests are failing currently, even on win32. + +S4U: + - Actor: Merge signals on_migration_start/end into on_host_change + - Actor: Rename migrate() into set_host() + - Disk: Allow users to get the read and write nominal bandwidth values + - Exec: Implement wait_for(timeout) + - Io: Implement wait_for(timeout) XML: -- Parse errors now raise a simgrid::ParseError that you may want to catch. + - Parse errors now raise a simgrid::ParseError that you may want to catch. Kernel: -- In simgrid::kernel::resource::Model, the methods next_occuring_event*() have - been renamed to fix a spelling error. As usual, the previous definitions are - kept with a deprecation warning. However, to avoid runtime errors, it is now - forbidden to override these deprecated methods in a derived class. Please use - the new names immediately if you need to override them. + - In simgrid::kernel::resource::Model, the methods next_occuring_event*() have + been renamed to fix a spelling error. As usual, the previous definitions are + kept with a deprecation warning. However, to avoid runtime errors, it is now + forbidden to override these deprecated methods in a derived class. Please use + the new names immediately if you need to override them. XBT: -- Remove unused parameter 'free_ctn' for xbt_dict_set() and xbt_dict_set_ext(). -- Drop unused functions for dicts and dynars: xbt_dict_cursor_get_elm, - xbt_dict_get, xbt_dict_get_elm, xbt_dict_get_ext, xbt_dict_get_key, - xbt_dict_remove, xbt_dict_reset, xbt_dynar_compare, xbt_dynar_dump, - xbt_dynar_foreach_ptr, xbt_dynar_free_data, xbt_dynar_free_voidp, - xbt_dynar_init, xbt_dynar_insert_at_as, xbt_dynar_merge, - xbt_dynar_remove_n_at, xbt_dynar_replace, xbt_dynar_search, xbt_dynar_set. -- New module: random, providing classical random numbers generators. + - Remove unused parameter 'free_ctn' for xbt_dict_set() and xbt_dict_set_ext(). + - Drop unused functions for dicts and dynars: xbt_dict_cursor_get_elm, + xbt_dict_get, xbt_dict_get_elm, xbt_dict_get_ext, xbt_dict_get_key, + xbt_dict_remove, xbt_dict_reset, xbt_dynar_compare, xbt_dynar_dump, + xbt_dynar_foreach_ptr, xbt_dynar_free_data, xbt_dynar_free_voidp, + xbt_dynar_init, xbt_dynar_insert_at_as, xbt_dynar_merge, + xbt_dynar_remove_n_at, xbt_dynar_replace, xbt_dynar_search, xbt_dynar_set. + - New module: random, providing classical random numbers generators. SMPI: -- New option : "smpi/auto-shared-malloc-thresh" which sets a value for - allocations' size above which they are considered "shared" by default (as if - they were performed through SMPI_SHARED_MALLOC macros). - Default = 0 = disabled feature. - Note : malloc, calloc and free are now overriden by smpicc/cxx by default. - This can cause some troubles if codes are already overriding these. If this - is the case, defining SMPI_NO_OVERRIDE_MALLOC in the compilation flags can - help, but will make this feature unusable. -- Input check is now performed much more consistently and outputs precise - warnings for each error found -- New supported calls : MPI_File_set_view, MPI_File_get_view -- MPI I/O now only supports disks, as storage is discontinued. -- MPI I/O allows opening files without specifying absolute path -- Note : SMPI configuration options are now initialized by smpi_init_options() - call, which should be called if SMPI is not being used through smpirun. + - New option : "smpi/auto-shared-malloc-thresh" which sets a value for + allocations' size above which they are considered "shared" by default (as if + they were performed through SMPI_SHARED_MALLOC macros). + Default = 0 = disabled feature. + Note : malloc, calloc and free are now overriden by smpicc/cxx by default. + This can cause some troubles if codes are already overriding these. If this + is the case, defining SMPI_NO_OVERRIDE_MALLOC in the compilation flags can + help, but will make this feature unusable. + - Input check is now performed much more consistently and outputs precise + warnings for each error found + - New supported calls : MPI_File_set_view, MPI_File_get_view + - MPI I/O now only supports disks, as storage is discontinued. + - MPI I/O allows opening files without specifying absolute path + - Note : SMPI configuration options are now initialized by smpi_init_options() + call, which should be called if SMPI is not being used through smpirun. Fixed bugs (FG#.. -> framagit bugs; FG!.. -> framagit merge requests): + - FG#9: Python bindings crashing + - FG#39: Missing s4u::Comm::wait_any_for example + - FG#42: Add support for ThreadSanitizer (TSan) + - FG!19: Removing RngStream + - FG!20: A module for RNG calls + - FG!21: Choice between ad-hoc and standard distributions implementations + - FG!23: Master + - FG!25: Fix link in Mutex doc + - FG!26: Fix links in SMPI interface doc - GH#31: [MC] please provide an option to make MPI_Send asynchronous - GH#305: Unscheduled tasks are still excuted - GH#313: smpirun: manual outdated w.r.t. --help - GH#321: [S4U] Get task remaining work ratio - GH#323: Crash when an actor turn off his physical host - - FG!19: Removing RngStream + - GH#335: Missing links on dragonfly example svg - https://lists.gforge.inria.fr/pipermail/simgrid-user/2019-November/004653.html: MPI_Cart_sub was not working properly. Kudos to Jonathan Borne for the report. @@ -349,7 +510,7 @@ Documentation: (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. + - Started but not finished an 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 @@ -485,7 +646,7 @@ Plugins: - Rename Energy plugin into host_energy - Rename Load plugin into host_load -simix: +Simix: - Add parameter --cfg=simix/breakpoint to raise a SIGTRAP at given time. - kill simix::onDeadlock() that was somewhat dupplicating s4u::on_deadlock() - Improve performance when handling timeouts of simix synchros. @@ -777,7 +938,7 @@ SimGrid (3.16) Released June 22. 2017. * This is (mainly) a backward compatible change: v4 are valid v4.1 files - can be used as a synonym for the now deprecated - can be used as a synonym for the now deprecated - - an be used as a synonym for the now deprecated + - can be used as a synonym for the now deprecated - can be used as a synonym for the now deprecated - state_file and avail_file periodicity is now easier to express (check the documentation) the old behavior should still work. @@ -1713,7 +1874,7 @@ SimGrid (3.8) stable; urgency=low 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) + * New option to generate an 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 @@ -3664,7 +3825,7 @@ SimGrid (2.90) unstable; urgency=low 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 + directly read from an 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