SimGrid (3.25.1) UNRELEASED (target: March 20 2020 or v3.26 on 3/26/20)
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 difficult to understand issues when using high bandwidth or
small latency events. The new value was already the default for SMPI and
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:
+ - 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 option --cfg=contexts/parallel-threshold.
+ - Further improve the documentation.
+
S4U:
- 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
building shared libraries, this may cause issues, so environment variable
SMPI_NO_UNDEFINED_CHECK can be added to disable this.
-C binding:
+C binding and interface:
- The return type of the sg_actor_on_exit() callbacks is now 'void'
(int value was previously ignored)
-
-General:
- - Require a compiler with C++14 support.
- - 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).
-
-C interface:
- Many MSG tests were converted to the new S4U's interface in C, that
was extended for that.
-Simix:
- - Remove obsolete option --cfg=contexts/parallel-threshold.
-
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!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#54: How to suspend a comm?
+ - 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#346: [SMPI] error while loading shared libraries: libsimgrid.so
- 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
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