X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/39390464c7972e67624ee2a8f0c8a13269aebc13..361da673f9e66e13ce1ef5f21bc395439606c170:/ChangeLog

diff --git a/ChangeLog b/ChangeLog
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--- a/ChangeLog
+++ b/ChangeLog
@@ -2,30 +2,50 @@
 
 SimGrid (3.28.1) NOT RELEASED YET (v3.29 expected September 22. 2021, 19:21 UTC)
 
-New features:
- - Non-linear resource sharing: allows to dynamically change the resource
-   capacity. Users can change this capacity by setting a callback which will
-   be called when SimGrid is sharing the resource between the active
-   activities. An activity can be a task running, a read/write IO operation or a
-   communication flow.
-   - Callback signature: double (double capacity, int n_activities): given the
-     current resource's capacity and number of activities running on it,
-	 returns the new capacity.
-   - Note that this callback is in the critical path of the system solve and
-   should not take long to execute.
-   - Examples:
-     - Disk: examples/cpp/io-degradation
-	 - Link: examples/cpp/network-nonlinear
-	 - CPU: examples/cpp/exec-cpu-nonlinear
+New modeling features:
+ - Non-linear resource sharing for decay models:
+   - The total capacity may depend on the number of concurrent usages
+   - For that, resources can take a callback that computes the capacity 
+     depending on the idle capacity and the number of concurrent usages
+   - Examples (both cpp and python): io-degradation, network-nonlinear, exec-cpu-nonlinear
+
+ - Dynamic factors for CPU and disk: similarly to dynamic network factors,
+   allows the user to set a callback which can affect the progress of activities
+   (multiplicative factor applied when updating the amount of work remaining).
+   - Example: examples/cpp/exec-cpu-factors
+
+Python:
+ - Added support to programmatic platform creation in Python.
+   Example: examples/python/clusters-multicpu
 
 S4U:
- - New: s4u::Disk::set_sharing_policy() and s4u::Host::set_sharing_policy().
-   Allows the configuration of non-linear resource sharing for hosts and
-   disks.
+ - Disk and Host now have a set_sharing_policy() too, for non-linear sharing.
+   This can only be set through the API, not through XML files.
+
+SMPI:
+ - TI Tracing/Replay:
+   - Multiple fixes to ensure reproducibility of tracing
+   - scan/excan can now be replayed
+   - wait action now uses ranks and not pid, as the other ones.
+   - smpi/init and smpi/finalization-barrier are now valid for replays.
+ - exit() is now intercepted by SMPI to avoid premature shutdown of
+   simulation. First non 0 return codes is returned as simulation return
+   code.
 
 Documentation:
   * New section "Release Notes" documenting recent and current developments.
+  * New section "Modeling I/O: the realistic way" presenting how to properly model disks in SimGrid.
+  * Improvements in API Reference for C++ and Python interfaces.
+
+ns-3 model:
+ - Make wifi creation compatible with ns-3 version 3.34 too.
 
+Fixed bugs (FG#.. -> FramaGit bugs; FG!.. -> FG merge requests)
+ (FG: issues on Framagit; GF: issues on GForge; GH: issues on GitHub)
+ - FG#78: Multiple fixes for SMPI replay:
+    - TI tracing of allotallv/w was outputting wrong values
+    - MPI_LOGICAL in fortran is actually 32 bits wide, and not 8.
+ - FG#77: Search feature of doc is broken (update sphinx theme version)
 ----------------------------------------------------------------------------
 
 SimGrid (3.28) July 14. 2021