SimGrid (3.24.1) NOT RELEASED YET (v3.25 expected December 22. 2029, 04:19 UTC)
+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.
+ - The plan is to completely remove MSG by the end of 2020.
+- 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
+ - Only Exec and Io so far. Comms are not handled yet.
+ - No heterogeneous wait_any() that would mix Exec and Io activities.
+ - See examples/s4u/{io-,exec-}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()
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.
+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.
+
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.
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