make test pass. The finalization barrier is needed in this case, which is suboptimal.

[simgrid.git] / ChangeLog

diff --git a/ChangeLog b/ChangeLog
index 909594f..13e0736 100644 (file)
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,6 +1,53 @@
 ----------------------------------------------------------------------------
 
 ----------------------------------------------------------------------------
 

-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 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:
+ - 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.
+
+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
+
+The Victoriadagarna Release.

 
 New features:
  - C++ platform interface: Users can now describe their platform directly in C++.
 
 New features:
  - C++ platform interface: Users can now describe their platform directly in C++.


@@ -27,6 +74,7 @@ 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.
    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.
 
 SMPI:
  - The default SMPI compiler flags are no more taken from the environment.


@@ -83,6 +131,17 @@ Models:
    This change may impact on the timing of your simulation results.
    Take care when comparing simulations from different SimGrid's
    versions. Sorry for the inconvenience.
    This change may impact on the timing of your simulation results.
    Take care when comparing simulations from different SimGrid's
    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.
+   - 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.
+   - 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.
 
 XBT:
  - xbt_assert is not disabled anymore, even when built with enable_debug=off.


@@ -90,6 +149,9 @@ XBT:
 Documentation:
  - New tutorial: Model-checking and formal assessment
  - New sections: "Demystifying the routing" and "C++ platforms"
 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.
 
 LUA:
  - Lua platform files are deprecated. Their support will be dropped after v3.31.