--- /dev/null
+/* -*- Mode: C; c-basic-offset:4 ; indent-tabs-mode:nil ; -*- */
+/*
+ * (C) 2001 by Argonne National Laboratory.
+ * See COPYRIGHT in top-level directory.
+ */
+#include <stdio.h>
+#include "mpi.h"
+#include "mpitest.h"
+
+#define BUFSIZE 2000
+int main( int argc, char *argv[] )
+{
+ MPI_Status status;
+ int a[10], b[10];
+ int buf[BUFSIZE], *bptr, bl, i, j, rank, size;
+ int errs = 0;
+
+ MTest_Init( 0, 0 );
+ MPI_Comm_rank( MPI_COMM_WORLD, &rank );
+ MPI_Comm_size( MPI_COMM_WORLD, &size );
+ MPI_Buffer_attach( buf, BUFSIZE );
+
+ for (j=0; j<10; j++) {
+ for (i=0; i<10; i++) {
+ a[i] = (rank + 10 * j) * size + i;
+ }
+ MPI_Bsend( a, 10, MPI_INT, 0, 27+j, MPI_COMM_WORLD );
+ }
+ if (rank == 0) {
+
+ for (i=0; i<size; i++) {
+ for (j=0; j<10; j++) {
+ int k;
+ status.MPI_TAG = -10;
+ status.MPI_SOURCE = -20;
+ MPI_Recv( b, 10, MPI_INT, i, 27+j, MPI_COMM_WORLD, &status );
+
+ if (status.MPI_TAG != 27+j) {
+ errs ++;
+ printf( "Wrong tag = %d\n", status.MPI_TAG );
+ }
+ if (status.MPI_SOURCE != i) {
+ errs++;
+ printf( "Wrong source = %d\n", status.MPI_SOURCE );
+ }
+ for (k=0; k<10; k++) {
+ if (b[k] != (i + 10 * j) * size + k) {
+ errs++;
+ printf( "received b[%d] = %d from %d tag %d\n",
+ k, b[k], i, 27+j );
+ }
+ }
+ }
+ }
+ }
+ MPI_Buffer_detach( &bptr, &bl );
+
+ MTest_Finalize( errs );
+ MPI_Finalize();
+ return 0;
+}