From: Augustin Degomme <adegomme@users.noreply.github.com>
Date: Wed, 3 Jun 2020 20:32:12 +0000 (+0200)
Subject: changelog
X-Git-Tag: v3.26~565
X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/commitdiff_plain/79976d4fbbff584f5e677713e2b60ce573df336b

changelog
---

diff --git a/ChangeLog b/ChangeLog
index 118d39172f..e1df82b8dd 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -16,10 +16,24 @@ Important user-visible changes:
    Options network/loopback-lat and network/loopback-bw have been added to adapt
    these values if needed. Network and routing models already providing separate
    loopbacks (clusters and such) are not impacted by this change.
+ - SMPI now adds 16 bytes of header to each message sent, in order to simulate
+   metadata that are added to each MPI message by MPI libraries (tag,
+   src/dest, and communicator information). This may change simulation times
+   for very small message sizes, but should be more realistic.
 
 S4U:
  - the on_exit() of each actor is also executed when the simulation deadlocks.
 
+SMPI:
+ - Update proxy apps coverage of new ECP apps: 60+ apps now tested nightly on 
+   https://framagit.org/simgrid/SMPI-proxy-apps
+ - MPI/IO: supports names starting with "./"
+ - Fortran: many MPI/IO bindings, support for MPI_UB/LB, C MPI_INT/FLOAT/DOUBLE
+   datatypes.
+ - smpicc/cxx/ff/f90 now will actually perform definition checks at link time. When
+   building shared libraries, this may cause issues, so environment variable
+   SMPI_NO_UNDEFINED_CHECK can be added to disable this.
+
 C binding:
  - The return type of the sg_actor_on_exit() callbacks is now 'void'
    (int value was previously ignored)