X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/3dd753cd9e46d794e00629d03183250aec4a17e4..d9f8f81af86c42774b718736826255cbc523691d:/ChangeLog

diff --git a/ChangeLog b/ChangeLog
index 80a78928cd..4bd23d27d5 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,4 +1,26 @@
-SimGrid (3.30.1) NOT RELEASED YET (v3.31 expected March 20. 2022, 15:33 UTC)
+SimGrid (3.31.1) NOT RELEASED YET (v3.32 expected June 21. 2022, 09:13 UTC)
+
+----------------------------------------------------------------------------
+
+S4U:
+ - kill Comm::on_completion that was not working anyway.
+
+SimGrid (3.31) March 22. 2022.
+
+The ненасильство release. We stand against war.
+
+Against the agression by a sick system that forces peoples to take arms against each other.
+
+
+MC:
+ - Rework the internals, for simpler and modern code. This shall unlock many future improvements.
+ - You can now define plugins onto the DFS explorer (previously called SafetyChecker), using the
+   declared signals. See CommunicationDeterminism for an example.
+ - Support mutex, semaphore and barrier in DPOR reduction
+ - Seems to work on Arm64 architectures too.
+ - Display a nice error message when ptrace is not usable.
+ - New test suite, imported from the MPI Bugs Initiative (MBI). Not all MBI generators are integrated yet.
+ - Remove the ISP test suite: it's not free software, and it's superseeded by MBI.
 
 SMPI:
  - fix for FG#100 by ensuring small asynchronous messages never overtake larger
@@ -7,13 +29,83 @@ SMPI:
    their handles.
  - tracing: ensure that we dump the TI traces continuously during execution and
    not just at the end, reducing memory cost and performance hit.
+ - Update OpenMPI collectives selection logic to match current one (4.1.2)
+ - Add a coherence check for collective operation order and root/MPI_Op
+   coherence. Potentially costly so not activated unless smpi:pendantic is set
+   or -analyze is given.
+
+S4U:
+ - New signal: Engine::on_simulation_start_cb()
+ - Introduce a new execution mode with this_actor::thread_execute(). This simulate
+   the execution of a certain amount of flops by multiple threads ran by a host. Each
+   thread executes the same number of flops, given as argument. An example of this new
+   function can be found in examples/cpp/exec-threads.
+ - Reimplementation of barriers natively.
+   Previously, they were implemented on top of s4u::Mutex and s4u::ConditionVariable.
+   The new version should be faster (and can be used in the model-checker).
+ - Actor::get_restart_count(): Returns the number of reboots that this actor did.
+
+MSG:
+ - MSG_barrier_destroy now expects a non-const msg_barrier parameter.
+
+New plugin: the Chaos Monkey (killing actors at any time)
+ - Along with the new simgrid-monkey script, it tests whether your simulation
+   resists resource failures at any possible timestamp in your simulation.
+ - It is mostly intended to test the simgrid core in extreme conditions,
+   but some users may find it interesting too.
+
+Models:
+ - New solver for parallel task: BMF.
+   - More realistic sharing of heterogeneous resources compared to the fair
+   bottleneck solver used by ptask_L07.
+   - Implement the BMF (Bottleneck max fairness) fairness.
+   - Improved resource sharing for parallel tasks with sub-flows (parallel
+     communications between same source and destination inside the ptask).
+   - Parameters:
+     - "--cfg=host/model:ptask_L07 --cfg=host/solver:bmf": enable the ptask
+	 model with BMF solver.
+     - "--cfg=bmf/max-iterations: <N>": maximum number of iterations performed
+        by BMF solver (default: 1000).
+     - "--cfg=bmf/precision: <N>": numerical precision used when computing
+	 resource sharing (default: 1e-12).
+   - This model requires Eigen3 library. Make sure Eigen3 is installed to use BMF.
+
+General:
+  - Modifications of the Profile mechanism, with some impact on users
+    - Addition of a new (S4U) method to init profiles from generic functions to improve versatility
+    - Fix initial behaviour of state_profiles
+    - Modify periodicity to behave like a period, and not like a loop delay
 
 XBT:
  - Drop xbt_dynar_shrink().
 
+Python:
+ - Made the following bindings static (previously member functions):
+   - Actor: Actor.kill_all(), Actor.by_pid()
+   - Host: Host.by_name(), Host.current(), Host.on_creation_cb()
+   - Mailbox: Mailbox.by_name()
+ - Added the following bindings:
+     - this_actor.warning()
+     - Mailbox.put_init() [example: examples/python/comm-waitallfor/]
+     - Comm.detach() [example: examples/python/comm-waitallfor/]
+     - Comm.wait_for() [example: examples/python/comm-waitfor/]
+     - Comm.wait_any_for()
+     - Comm.wait_all_for() [example: examples/python/comm-waitallfor/]
+     - Mutex [example: examples/python/synchro-mutex/]
+     - Barrier [example: examples/python/synchro-barrier/]
+     - Semaphore [example: examples/python/synchro-semaphore/]
+
+Build System:
+ - Remove target "make uninstall" which was incomplete and no longer maintained.
+
 Fixed bugs (FG#.. -> FramaGit bugs; FG!.. -> FG merge requests)
  (FG: issues on Framagit; GH: issues on GitHub)
+ - FG#57: Mc SimGrid should test whether ptrace is usable
+ - FG#87: Smpi scripts fail with spaces in paths
  - FG#100: [SMPI] Order of the message matching is not guaranteed
+ - FG#101: LGPL 2.1 is deprecated license
+ - FG#104: "make uninstall" not up-to-date
+ - GH#151: Missing mutexes for DPOR.
 
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