Changeset 1240

Timestamp:

08/09/17 10:39:19 (7 years ago)

Author:

ymipsl

Message:

Avoid buffer Aliasing with MPI_Allreduce

YM

File:

• XIOS/dev/XIOS_DEV_CMIP6/src/node/field.cpp (modified) (1 diff)

XIOS/dev/XIOS_DEV_CMIP6/src/node/field.cpp

@@ -481 +481 @@
     if (!nstepMaxRead)
     {
-       MPI_Allreduce(&nstepMax, &nstepMax, 1, MPI_INT, MPI_MAX, context->server->intraComm);
+       MPI_Allreduce(MPI_IN_PLACE, &nstepMax, 1, MPI_INT, MPI_MAX, context->server->intraComm);
        nstepMaxRead = true;
     }