X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/97e5210852e84ebe84d8344987fa1b92b1d369fa..99a7136f0b7db6ef5a3b94c3d4b437fd361e7933:/ChangeLog

diff --git a/ChangeLog b/ChangeLog
index e2a31854bb..4108344c40 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -2,8 +2,13 @@ SimGrid (3.30.1) NOT RELEASED YET (v3.31 expected March 20. 2022, 15:33 UTC)
 
 MC:
  - Rework the internals, for simpler and modern code. This shall unlock many future improvements.
- - You can now define plugins onto SafetyChecker (a simple DFS explorer), using the declared signals.
-   See CommunicationDeterminism for an example.
+ - 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
@@ -12,14 +17,80 @@ 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)
+
+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 model for parallel task: ptask_BMF.
+   - More realistic sharing of heterogeneous resources compared to 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_BMF": enable the model.
+     - "--cfg=bmf/max-iterations: <N>" - maximum number of iterations performed
+	     by BMF solver (default: 1000).
+	 - "--cfg=bmf/selective-update:<true/false>" - enable/disable the
+	    selective-update optimization. Only invalidates and recomputes modified
+	    parts of inequations system. May speed up simulation if sparse resource
+	    utilization (default: false).
+   - ATTENTION: this model requires Eigen3 library. If you install SimGrid
+     from source, please see the "Installing from source" section:
+     https://simgrid.org/doc/latest/Installing_SimGrid.html#installing-from-the-source.
+     No action is required if you use pre-compiled packages.
+
+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]
+
+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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