X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/e8d2ff8dab0cbf7a280fabcb27900c30ff6bb4fe..968613a336f2fff832f9085e69b990e7371ca8e5:/ChangeLog

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+SimGrid (3.32.1) not released yet (target december 22)
+
+General:
+ - Remove the MSG API: its EOL was scheduled for 2020.
+ - Remove the Java bindings: they were limited to the MSG interface.
+ - On Windows, you now need to install WSL2 as the native builds are now disabled.
+   It was not really working anyway.
+ - Support for 32bits architecture is not tested anymore on our CI infrastructure.
+   It may break in the future, but we think that nobody's using SimGrid on 32 bits.
+ - Remove the surf module. It was replaced by the kernel/models module, and that 
+   refactoring took almost 10 years to properly complete.
+
+S4U:
+ - Activity::set_remaining() is not public anymore. Use for example
+   Comm::set_payload_size() to change the size of the simulated data.
+ - New function: Engine::flatify_platform(), to get a fully detailed vision of the
+   configured platform.
+ - Full simDAG integration: Activity::start() actually starts only when all dependencies
+   are fullfiled. If it cannot be started right away, it will start as soon as it becomes
+   possible.
+
+Kernel:
+ - optimize an internal datastructure (use a set instead of a list for ongoing activities),
+   leading to a potentially big performance gain, in particular with many detached comms.
+
+MPI:
+ - New option smpi/barrier-collectives to add a barrier to some collectives
+   to detect dangerous code that /may/ work on some MPI implems.
+ - New function SMPI_app_instance_start() to easily start a MPI instance in your S4U simulation.
+
+Models:
+ - Write the section of the manual about models, at least.
+ - WiFi: the total capacity of a link depends on the amout of flows on that link.
+   - Use the nonlinear callback feature of LMM to reflect this.
+   - Calibration values can be changed to match different MCS configurations
+   - See the example teshsuite/models/wifi_usage_decay/wifi_usage_decay.cpp
+   - See also "A Flow-Level Wi-Fi Model for Large Scale Network Simulation"
+     https://hal.archives-ouvertes.fr/hal-03777726
+ - Merge parameters network/bandwidth-factor and smpi/bw-factor that serve the same purpose.
+   - Same for the latency
+   - Rewrite the corresponding documentation.
+ - Allow to disable the TCP windowing modeling by setting network/TCP-gamma to 0.
+ - Finally kill the 'compound' host model. You can change the CPU or network model
+   with the default host model, as it should.
+ - Rename option "surf/precision" to "precision/timing" for clarity.
+ - Rename option "maxmin/precision" to "precision/work-amount" for clarity.
+ - New function: Engine::flatify_platform() to debug your platform.
+
+sthread:
+ - Implement pthread_join in MC mode.
+ - Implement semaphore functions in sthread.
+
+Model checking:
+ - Synchronize the MBI tests with upstream.
+ - Show the full actor bactraces when replaying a MC trace (with model-check/replay)
+   and the status of all actors on deadlocks in MC mode.
+
+XBT:
+ - simgrid::xbt::cmdline and simgrid::xbt::binary_name are gone.
+   Please use simgrid::s4u::Engine::get_cmdline() instead.
+
+Documentation:
+ - New section in the user guide on the provided performance models.
+ - New section presenting some technical good practices for (potential) contributors.
+ - Add a section on errors and exceptions to the API documentation.
+ - Move the s4u examples to a section on their own to ease navigation.
+
+Fixed bugs (FG#.. -> FramaGit bugs; FG!.. -> FG merge requests)
+ (FG: issues on Framagit; GH: issues on GitHub)
+ - FG#18: Java bindings should be redone or removed
+ - FG!118: Wi-Fi callback mechanism
+ - FG!119: SMPI: add option to inject a barrier before every collective call
+ - GH#383: Segfault when adding a disk after load_platform(xml)
+
+----------------------------------------------------------------------------
+
 SimGrid (3.32) October 3. 2022.
 
 The Wiedervereinigung release. Germany was reunited 32 years ago.