X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/8d273cc02cf3c7b1d2ec1c70c306058dee9fd17b..4bc1b8a46fad46958e475b5bd38c402cc3b8bcfb:/ChangeLog

diff --git a/ChangeLog b/ChangeLog
index dc1cc70eab..f3e9234557 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -3,11 +3,26 @@ SimGrid (3.20) NOT RELEASED YET (Release target: June 21. 2018 10:07 UTC)
 TRACE
  - Change --cfg=tracing/msg/vm to --cfg=tracing/vm as virtual machine
    behavior tracing is no longer limited to MSG
+ - TIT (Time Independent Traces): We finally support tags. Unfortunately,
+   this means that traces now need to be updated or re-obtained; both Irecv
+   and Isend lines in your traces have now in total 5 mandatory fields:
+      <rankid> <command> <to/from rankid> <tag> <size>
+   To update your traces, it suffices to add a 0 for the tag here.
+ - TIT now also supports waiting for a distinct request via MPI_Wait.
+   Wait/Test now wait for a specific request, not just the last one that was
+   issued. This unfortunately means another update, because we need to
+   identify which request you want to wait for. We do this via the
+   triplet (sender, receiver, tag), which needs to be added:
+      <rankid> <command> <sender> <receiver> <tag>
+ - We lowercased all actions: For instance, instead of allReduce, we now 
+   use allreduce.
 
 MSG
- - The deprecation of MSG is ongoing. A lot of functions are now simple
-   wrappers on the C API of S4U. All these wrappers (and their S4U counterparts
-   can be found in src/msg/msg_legacy.cpp).
+ - The deprecation of MSG is ongoing (but this should not impact you).
+   Many MSG functions are now simple wrappers on the C API of S4U. If
+   you wish to convert your code to S4U, find the S4U counterparts of
+   your MSG calls in src/msg/msg_legacy.cpp.
+ - MSG can still be used, but won't evolve anymore.
 
 S4U:
  - Introduced new function simgrid::s4u::Host::get_actor_count. This function
@@ -26,7 +41,7 @@ simix:
 
 SMPI:
  - SMPI is now tested with ~45 proxy apps from various sources, with none or 
-   only minor patching needed: check github.com/simgrid/SMPI-proxy-apps
+   only minor patching needed: check https://github.com/simgrid/SMPI-proxy-apps
  - Replay: The replay file has been re-written in C++.
  - Replay: Tags used for messages sent via MPI_Send / MPI_Recv are now
    supported. They are stored in the trace and used when replayed.