+++ /dev/null
-/* -*- Mode: C; c-basic-offset:4 ; indent-tabs-mode:nil ; -*- */
-/*
- *
- * (C) 2003 by Argonne National Laboratory.
- * See COPYRIGHT in top-level directory.
- */
-
-#include "mpi.h"
-#include "mpitest.h"
-#include <stdlib.h>
-#include <stdio.h>
-
-/* Gather data from a vector to contiguous. Use IN_PLACE */
-
-int main( int argc, char **argv )
-{
- MPI_Datatype vec;
- double *vecin, *vecout;
- MPI_Comm comm;
- int count, minsize = 2;
- int root, i, n, stride, errs = 0;
- int rank, size;
-
- MTest_Init( &argc, &argv );
-
- while (MTestGetIntracommGeneral( &comm, minsize, 1 )) {
- if (comm == MPI_COMM_NULL) continue;
- /* Determine the sender and receiver */
- MPI_Comm_rank( comm, &rank );
- MPI_Comm_size( comm, &size );
-
- for (root=0; root<size; root++) {
- for (count = 1; count < 65000; count = count * 2) {
- n = 12;
- stride = 10;
- vecin = (double *)malloc( n * stride * size * sizeof(double) );
- vecout = (double *)malloc( size * n * sizeof(double) );
-
- MPI_Type_vector( n, 1, stride, MPI_DOUBLE, &vec );
- MPI_Type_commit( &vec );
-
- for (i=0; i<n*stride; i++) vecin[i] =-2;
- for (i=0; i<n; i++) vecin[i*stride] = rank * n + i;
- int errorcode = MPI_SUCCESS;
- if (rank == root) {
- for (i=0; i<n; i++) {
- vecout[rank*n+i] = rank*n+i;
- }
- errorcode = MPI_Gather( MPI_IN_PLACE, -1, MPI_DATATYPE_NULL,
- vecout, n, MPI_DOUBLE, root, comm );
- }
- else {
- errorcode = MPI_Gather( vecin, 1, vec, NULL, -1, MPI_DATATYPE_NULL,
- root, comm );
- }
-
- if (rank == root) {
- for (i=0; i<n*size; i++) {
- if (vecout[i] != i) {
- errs++;
- if (errs < 10) {
- fprintf( stderr, "vecout[%d]=%d, err=%d\n",
- i, (int)vecout[i], errorcode );
- }
- }
- }
- }
- MPI_Type_free( &vec );
- free( vecin );
- free( vecout );
- }
- }
- printf("end with comm size : %d\n", size);
- MTestFreeComm( &comm );
- }
-
- /* do a zero length gather */
- MPI_Comm_rank( MPI_COMM_WORLD, &rank );
- if ( rank == 0 ) {
- MPI_Gather( MPI_IN_PLACE, -1, MPI_DATATYPE_NULL, NULL, 0, MPI_BYTE, 0,
- MPI_COMM_WORLD );
- } else {
- MPI_Gather( NULL, 0, MPI_BYTE, NULL, 0, MPI_BYTE, 0, MPI_COMM_WORLD );
- }
-
- MTest_Finalize( errs );
- MPI_Finalize();
- return 0;
-}
-
-