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-SimGrid (3.26.1) NOT RELEASED YET (v3.27 expected March 20. 2021, 09:37 UTC)
+SimGrid (3.27.1) NOT RELEASED YET (v3.28 expected June 21. 2021, 03:32 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:
+ - Fixed a bug where Activity::wait_for() killed the activity on timeout.
+ Explicitly cancel the activity to get back to previous behavior.
+
+SMPI:
+ - The default SMPI compiler flags are no more taken from the environment.
+ They can be explicitly set through cmake parameters SMPI_C_FLAGS,
+ SMPI_CXX_FLAGS, or SMPI_Fortran_FLAGS.
+
+LUA:
+ - Lua platform files are deprecated. Their support will be dropped after v3.31.
+
+XBT:
+ - xbt_assert is not disabled anymore, even when built with enable_debug=off.
+
+Documentation:
+ - New tutorial: Model-checking and formal assessment
+
+Fixed bugs (FG#.. -> FramaGit bugs; FG!.. -> FG merge requests)
+ (FG: issues on Framagit; GF: issues on GForge; GH: issues on GitHub)
+ - FG#47: Complete and fix tests from teshuite/s4u/activity-lifecycle
+ - FG#64: Configuring smpi/IB-penalty-factors
+ - FG#67: Running computation concurrently with MPI_Iallreduce
+ - GH#322: Issue when an actor kills his host vm
+
+----------------------------------------------------------------------------
+
+SimGrid (3.27) March 29. 2021
+
+The Ragnar Release (anniversary of the siege of Paris by Vikings in 845)
+
+Main user-visible changes:
+ - All functions marked as deprecated for one year were removed.
- Removed all that was related to the "Storage" type in all APIs and bindings.
"Disks" have been introduced more than a year ago to replace them for the better.
It's time to finish this replacement.
- - Model iteration order may change simulations.
- *****************************************
- *DO NOT MIX 3.27 RESULTS WITH OLDER ONES*
- *****************************************
- The order in which the different models (CPU, network, disk, etc) are
- solved internally has changed in this version. Although rare (no current
- test raises the problem), this change can result in slightest different simulations
- results. Take care when comparing simulations from different SimGrid's
- versions. Sorry for the inconvenience.
- - SMPI API break from previous version: MPI global handles (predefined datatypes,
- ops, COMM_WORLD) are now defined differently, and can be used in initializers,
+ - SMPI ABI breaks from previous version: MPI global handles (predefined datatypes,
+ ops, COMM_WORLD) are now defined differently, and can be used in initializers,
avoiding "initializer element is not constant" errors with some codes. Please be
careful to recompile your MPI codes if switching to this new SimGrid version.
+ - Network model ns-3 now requires version ns-3.28 or higher.
+ - 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:
+ - New functions: Comm::sendto_{init,async} to initiate a communication
+ on between two (possibly remote) hosts.
- 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<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.
-XBT:
- - Drop simgrid::xbt::demangle(). Please use boost::core::demangle() instead.
- - Drop xbt_dynar_cursor_rm(), xbt_dynar_search_or_negative(),
- xbt_str_split_quoted(), xbt_str_split_quoted_in_place().
- - Deprecate xbt_dynar_to_array().
+Models:
+ - ptask should now work better with multicore hosts (FG#37).
+ - Internal cleanups and refactoring around activities, to prepare for SimDAG++.
+ - Internal cleanups and refactoring around models, to prepare for programmatic
+ platform creation.
+ - Modernize our tests of the performance models
+
+Documentation:
+ - User manual:
+ - New section: Configuring the logs from the command line.
+ - New section: Programming API of logs.
+ - New section: Getting realistic results
+ - New section: Examples of SMPI Usage
+ - New part: SimGrid's Internals, with a section on Design goals
+ - Move back to the classical Breathe tool chain, and fix many small glitches.
SMPI:
- - Handle leak checking (experimental): SMPI will now display a message if MPI
- handles are still present at the end of a simulation. This may be nothing,
- but if the number is high it could be a problem. To display more information
- about the type of leaked handle, option --cfg=smpi/list-leaks:n. will display
- the n first leaked pointers and their types. Known issue: MPI_Cancel usage
- may trigger handle leaks in SMPI.
- Using smpirun with -wrapper "valgrind --leak-check=full --track-origins=yes"
- can provide more information to help locate precisely the leaks.
- - Memory allocations analysis (experimental): MPI codes using malloc/calloc to
- allocate memory, and not compiled with SMPI_NO_OVERRIDE_MALLOC, can use
- smpi/display-analysis option to show at the end of execution the amount of
- memory allocated through these calls, and locate the most expensive one.
- This helps finding the targets for manual memory sharing, or the threshold
- to use for smpi/auto-shared-malloc-thresh option.
- - New implemented MPI calls: MPI_File_set_size, MPI_Aint_add, MPI_Aint_diff,
+ - Handle leak checking: SMPI will now display a message if MPI handles are still
+ present at the end of a simulation. Option smpi/list-leaks:n will display the n
+ first leaked pointers and their types.
+ - smpi/display-allocs option : Display Memory allocations analysis, with hints
+ about the largest allocations. This only works for allocations with malloc/calloc
+ and not compiled with SMPI_NO_OVERRIDE_MALLOC
+ - "-analyze" option in smpirun will activate smpi/display-allocs and smpi/display-timing
+ - New implemented MPI calls: MPI_File_set_size, MPI_Aint_add, MPI_Aint_diff,
MPI_Type_get_extent_x, MPI_Type_get_true_extent_x, MPI_Status_set_elements_x
- - Misc fixes :
+ - Support for MPI C++ datatypes (MPI_CXX_BOOL, MPI_CXX_FLOAT_COMPLEX,
+ MPI_CXX_DOUBLE_COMPLEX, MPI_CXX_LONG_DOUBLE_COMPLEX)
+ - Replay now opens and parses the trace file only once for all ranks when possible.
+ - Misc fixes:
- better handling of MPI_PROC_NULL
- MPI_Group_incl was broken in some cases
- - PAPI tracing was fixed
+ - PAPI tracing now fixed
- MPI_Errhandlers are properly handled for MPI_COMM_WORLD
- - SMPI will now fail properly when receive size < sent size, instead of
+ - SMPI will now fail properly when receive size < sent size, instead of
just setting MPI_ERR_TRUNCATE and keep going.
- - Proxy Apps ( https://framagit.org/simgrid/SMPI-proxy-apps ):
+ - Proxy Apps ( https://framagit.org/simgrid/SMPI-proxy-apps ):
- Remove useless build patches and split build/run patches on the page
- Build in parallel when possible
- Test on yum-based systems
- - New nightly tested Proxy-apps:
+ - New nightly tested Proxy-apps:
- OpenMPI mpi-test-suite
- - Coral MCB, LSMS, Qbox
- - ECP/Mantevo Cloverleaf3D
+ - Coral MCB, LSMS, Qbox, CLOMP
+ - ECP/Mantevo Cloverleaf3D, Ember
+ - Codevault bhtree_mpi
+
+Model checker:
+ - Only initialize the Dwarf parser when needed, saving 10 seconds in most cases.
+ - Start to overhaul the implementation to modernize it (still ongoing).
+
+XBT:
+ - Drop simgrid::xbt::demangle(). Please use boost::core::demangle() instead.
+ - Drop xbt_dynar_cursor_rm(), xbt_dynar_search_or_negative(),
+ xbt_str_split_quoted(), xbt_str_split_quoted_in_place().
+ - Deprecate xbt_dynar_to_array().
+ - When an exception occurs in kernel mode, display both the actor and kernel stacks.
C binding and interface:
- Rename (lowercase) functions sg_actor_get_PID, sg_actor_get_PPID, sg_actor_by_PID.
-
-Documentation:
- - New section: Configuring the logs from the command line.
- - New section: Programming API of logs.
+ - Constness requirement has been lowered for parameter argv of sg_actor_start()
+ and sg_actor_create() It's now (char* const*). The previous version is still
+ available as sg_actor_start_() and sg_actor_create_().
Fixed bugs (FG#.. -> FramaGit bugs; FG!.. -> FG merge requests)
(FG: issues on Framagit; GF: issues on GForge; GH: issues on GitHub)
-- FG#37: Parallel tasks are limited to 1 core per host
-- FG#62: Running "smpirun -replay" on large networks
-- GH#343: Wrong consumed energy when an exec timeouts
+ - FG#37: Parallel tasks are limited to 1 core per host
+ - FG#62: Running "smpirun -replay" on large networks
+ - FG!46: Fix a few potential memory leaks in SMPI colls
+ - GH#343: Wrong consumed energy when an exec timeouts
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