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/*
* Copyright (C) by Argonne National Laboratory
* See COPYRIGHT in top-level directory
*/
#include "mpi.h"
#include <stdio.h>
#include "mpitest.h"
#include <stdlib.h>
#include "mpicolltest.h"
/*
static char MTEST_Descrip[] = "";
*/
int main(int argc, char *argv[])
{
int errs = 0;
int rank, size;
int minsize = 2, count;
MPI_Comm comm;
int *sendbuf, *recvbuf, *p;
int sendcount, recvcount;
int i, j;
MPI_Datatype sendtype, recvtype;
MTest_Init(&argc, &argv);
/* The following illustrates the use of the routines to
* run through a selection of communicators and datatypes.
* Use subsets of these for tests that do not involve combinations
* of communicators, datatypes, and counts of datatypes */
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);
/* printf("Size of comm = %d\n", size); */
for (count = 1; count < 65000; count = count * 2) {
/* Create a send buf and a receive buf suitable for testing
* all to all. */
sendcount = count;
recvcount = count;
sendbuf = (int *) malloc(count * size * sizeof(int));
recvbuf = (int *) malloc(count * size * sizeof(int));
sendtype = MPI_INT;
recvtype = MPI_INT;
if (!sendbuf || !recvbuf) {
errs++;
fprintf(stderr, "Failed to allocate sendbuf and/or recvbuf\n");
MPI_Abort(MPI_COMM_WORLD, 1);
}
for (i = 0; i < count * size; i++)
recvbuf[i] = -1;
p = sendbuf;
for (j = 0; j < size; j++) {
for (i = 0; i < count; i++) {
*p++ = j * size + rank + i;
}
}
MTest_Alltoall(sendbuf, sendcount, sendtype, recvbuf, recvcount, recvtype, comm);
p = recvbuf;
for (j = 0; j < size; j++) {
for (i = 0; i < count; i++) {
if (*p != rank * size + j + i) {
errs++;
if (errs < 10) {
fprintf(stderr, "Error with communicator %s and size=%d count=%d\n",
MTestGetIntracommName(), size, count);
fprintf(stderr, "recvbuf[%d,%d] = %d, should be %d\n",
j, i, *p, rank * size + j + i);
}
}
p++;
}
}
#if MTEST_HAVE_MIN_MPI_VERSION(2,2)
/* check MPI_IN_PLACE, added in MPI-2.2 */
p = recvbuf;
for (j = 0; j < size; j++) {
for (i = 0; i < count; i++) {
*p++ = j * size + rank + i;
}
}
MPI_Alltoall(MPI_IN_PLACE, -1 /*ignored */ , MPI_DATATYPE_NULL /*ignored */ ,
recvbuf, recvcount, recvtype, comm);
p = recvbuf;
for (j = 0; j < size; j++) {
for (i = 0; i < count; i++) {
if (*p != rank * size + j + i) {
errs++;
if (errs < 10) {
fprintf(stderr,
"Error (MPI_IN_PLACE) with communicator %s and size=%d count=%d\n",
MTestGetIntracommName(), size, count);
fprintf(stderr, "recvbuf[%d,%d] = %d, should be %d\n", j, i, *p,
rank * size + j + i);
}
}
p++;
}
}
#endif
free(recvbuf);
free(sendbuf);
}
MTestFreeComm(&comm);
}
MTest_Finalize(errs);
return MTestReturnValue(errs);
}
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