From: degomme <augustin.degomme@unibas.ch>
Date: Fri, 29 Apr 2016 09:23:43 +0000 (+0200)
Subject: bcast on one process is a no-op
X-Git-Tag: v3_14~1303
X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/commitdiff_plain/4febd002bec654c77a3e6e38b3feee35d87a79cc

bcast on one process is a no-op
---

diff --git a/src/smpi/smpi_pmpi.cpp b/src/smpi/smpi_pmpi.cpp
index abc914ce4a..707e29fdc7 100644
--- a/src/smpi/smpi_pmpi.cpp
+++ b/src/smpi/smpi_pmpi.cpp
@@ -1654,11 +1654,11 @@ int PMPI_Bcast(void *buf, int count, MPI_Datatype datatype, int root, MPI_Comm c
     dt_size_send = smpi_datatype_size(datatype);
   extra->send_size = count*dt_size_send;
   TRACE_smpi_collective_in(rank, root_traced, __FUNCTION__, extra);
-
+  if(smpi_comm_size(comm)>1)
     mpi_coll_bcast_fun(buf, count, datatype, root, comm);
-    retval = MPI_SUCCESS;
+  retval = MPI_SUCCESS;
 
-    TRACE_smpi_collective_out(rank, root_traced, __FUNCTION__);
+  TRACE_smpi_collective_out(rank, root_traced, __FUNCTION__);
   }
 
   smpi_bench_begin();