X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/c6217968ec3d2bfac301530d29b367e1f420cf2c..88ac3b4644030f249eaf9c17ba8b5f740b79e796:/ChangeLog

diff --git a/ChangeLog b/ChangeLog
index 9eba399f84..38c61308c6 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,6 +1,54 @@
 ----------------------------------------------------------------------------
 
-SimGrid (3.27.1) NOT RELEASED YET (v3.28 expected June 21. 2021, 03:32 UTC)
+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
+ - 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
+
+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.
+
+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.
+
+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.
+
+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.
+----------------------------------------------------------------------------
+
+SimGrid (3.28) July 14. 2021
+
+The Victoriadagarna Release.
 
 New features:
  - C++ platform interface: Users can now describe their platform directly in C++.
@@ -27,6 +75,7 @@ S4U:
    parameter by reference, instead of a pointer.
  - Fixed a bug where Activity::wait_for() killed the activity on timeout.
    Explicitly cancel the activity to get back to previous behavior.
+ - New: Link::set_concurrency_limit() to limit the amount of concurrent flows.
 
 SMPI:
  - The default SMPI compiler flags are no more taken from the environment.
@@ -85,12 +134,15 @@ Models:
    versions. Sorry for the inconvenience.
  - Dynamic network factors: users can configure a callback to define
    the network factors dynamically. This API is available at
- simgrid::kernel::resource::NetworkModelIntf.
+   simgrid::kernel::resource::NetworkModelIntf.
    - Users have access to complete information about the current communication
      to decide which factor to apply. This includes: message size, source and
-	 destination hosts, links and zones traversed.
+     destination hosts, links and zones traversed.
    - Dynamic factors for both latency and bandwidth.
    - For more details, see the example in (examples/cpp/network-factors).
+ - Plugin host_energy: the "watt_off" and "watt_per_state" host properties,
+   deprecated since version 3.24, are no longer supported. Instead, use
+   "wattage_off" and "wattage_per_state".
 
 XBT:
  - xbt_assert is not disabled anymore, even when built with enable_debug=off.
@@ -98,6 +150,9 @@ XBT:
 Documentation:
  - New tutorial: Model-checking and formal assessment
  - New sections: "Demystifying the routing" and "C++ platforms"
+ - Update and improve the part on visualization in MPI and Algo tutorials.
+ - Improve the section on routing: how to define it, how it's used internally
+ - Fix many issues, broken links and missing references in doxygen and Sphinx
 
 LUA:
  - Lua platform files are deprecated. Their support will be dropped after v3.31.