- mpi_coll_allreduce_fun(sendbuf, recvbuf, count, datatype, op, comm);
+
+ char* sendtmpbuf = (char*) sendbuf;
+ if( sendbuf == MPI_IN_PLACE ) {
+ sendtmpbuf = (char *)xbt_malloc(count*smpi_datatype_get_extent(datatype));
+ smpi_datatype_copy(recvbuf, count, datatype,sendtmpbuf, count, datatype);
+ }
+#ifdef HAVE_TRACING
+ int rank = comm != MPI_COMM_NULL ? smpi_process_index() : -1;
+ TRACE_smpi_computing_out(rank);
+ TRACE_smpi_collective_in(rank, -1, __FUNCTION__, count*smpi_datatype_size(datatype));
+#endif
+ mpi_coll_allreduce_fun(sendtmpbuf, recvbuf, count, datatype, op, comm);
+
+ if( sendbuf == MPI_IN_PLACE ) {
+ xbt_free(sendtmpbuf);
+ }
+