Implement the send receive as 2 non blocking operations. That will help us

avoiding too many calls to opal_progress.

This commit was SVN r12553.

ompi/mca/coll/tuned/coll_tuned_util.c

@@ -67,29 +67,29 @@ int ompi_coll_tuned_sendrecv_actual( void* sendbuf, int scount, ompi_datatype_t*
  * Currently this is a sync call, but will change to locally completed version when available
  */
 
-int ompi_coll_tuned_sendrecv_actual_localcompleted ( 
-                                                    void* sendbuf, int scount, ompi_datatype_t* sdatatype, int dest, int stag,
+int ompi_coll_tuned_sendrecv_actual_localcompleted( void* sendbuf, int scount, ompi_datatype_t* sdatatype, int dest, int stag,
                                                     void* recvbuf, int rcount, ompi_datatype_t* rdatatype, int source, int rtag, 
                                                     struct ompi_communicator_t* comm, ompi_status_public_t* status )
 
 { /* post receive first, then [local] sync send, then wait... should be fast (I hope) */
     int err, line = 0;
-    ompi_request_t* req;
-    ompi_status_public_t tmpstatus;
+    ompi_request_t* req[2];
+    ompi_status_public_t tmpstatus[2];
 
     /* post new irecv */
-    err = MCA_PML_CALL(irecv( recvbuf, rcount, rdatatype, source, rtag, comm, &req));
+    err = MCA_PML_CALL(irecv( recvbuf, rcount, rdatatype, source, rtag, comm, &(req[0])));
     if (err != MPI_SUCCESS) { line = __LINE__; goto error_handler; }
 
     /* send data to children */
-    err = MCA_PML_CALL(send( sendbuf, scount, sdatatype, dest, stag,  MCA_PML_BASE_SEND_SYNCHRONOUS, comm));
+    err = MCA_PML_CALL(isend( sendbuf, scount, sdatatype, dest, stag,
+                              MCA_PML_BASE_SEND_SYNCHRONOUS, comm, &(req[1])));
     if (err != MPI_SUCCESS) { line = __LINE__; goto error_handler; }
 
-    err = ompi_request_wait( &req, &tmpstatus );
+    err = ompi_request_wait_all( 2, req, tmpstatus );
     if (err != MPI_SUCCESS) { line = __LINE__; goto error_handler; }
 
     if (MPI_STATUS_IGNORE!=status) {
-        *status = tmpstatus;
+        *status = tmpstatus[0];
     }
 
     return (MPI_SUCCESS);