Merge pull request #1298 from JasonRuonanWang/add-mpi-allreduce

added MPI_Allreduce in mpidummy
ornladios · Mar 16, 2019 · d17b219 · d17b219
2 parents 163a81d + 12e4b91
commit d17b219
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diff --git a/source/adios2/helper/mpidummy.cpp b/source/adios2/helper/mpidummy.cpp
@@ -459,6 +459,12 @@ int MPI_Reduce(const void *sendbuf, void *recvbuf, int count,
     return 0;
 }
 
+int MPI_Allreduce(const void *sendbuf, void *recvbuf, int count,
+                  MPI_Datatype datatype, MPI_Op op, MPI_Comm comm)
+{
+    return MPI_Reduce(sendbuf, recvbuf, count, datatype, op, 0, comm);
+}
+
 } // end namespace mpi
 } // end namespace helper
 } // end namespace adios2
diff --git a/source/adios2/helper/mpidummy.h b/source/adios2/helper/mpidummy.h
@@ -144,6 +144,9 @@ double MPI_Wtime();
 int MPI_Reduce(const void *sendbuf, void *recvbuf, int count,
                MPI_Datatype datatype, MPI_Op op, int root, MPI_Comm comm);
 
+int MPI_Allreduce(const void *sendbuf, void *recvbuf, int count,
+                  MPI_Datatype datatype, MPI_Op op, MPI_Comm comm);
+
 } // end namespace mpi
 } // end namespace helper
 } // end namespace adios