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/* -*- Mode: C; c-basic-offset:4 ; indent-tabs-mode:nil ; -*- */
/*
* (C) 2001 by Argonne National Laboratory.
* See COPYRIGHT in top-level directory.
*/
/* define TEST_RECV_VECTOR to receive the data using the vector datatype.
undefine TEST_RECV_VECTOR to receive the data into a contiguous array. */
#define TEST_RECV_VECTOR
#include <stdlib.h>
#include <stdio.h>
#include "mpi.h"
#include <limits.h>
int MPID_Progress_test(void);
int main(int argc, char **argv)
{
int size;
int rank;
int niter = 1;
int msg_count = 0;
int msg_blocklength = 1;
int msg_stride = 1;
int msg_sz;
int * buf;
int buf_sz;
int iter;
int i;
MPI_Datatype dt;
if (MPI_Init(&argc, &argv) != MPI_SUCCESS)
{
printf("ERROR: problem with MPI_Init\n"); fflush(stdout);
}
if (MPI_Comm_size(MPI_COMM_WORLD, &size) != MPI_SUCCESS)
{
printf("ERROR: problem with MPI_Comm_size\n"); fflush(stdout);
}
if (MPI_Comm_rank(MPI_COMM_WORLD, &rank) != MPI_SUCCESS)
{
printf("ERROR: problem with MPI_Comm_rank\n"); fflush(stdout);
}
printf("srvec: size %d rank %d\n", size, rank); fflush(stdout);
if (size < 2)
{
if (rank == 0)
{
printf("ERROR: needs to be run with at least 2 procs\n");
fflush(stdout);
}
goto main_exit;
}
if (argc > 1)
{
sscanf(argv[1], "%d", &niter);
}
if (argc > 2)
{
sscanf(argv[2], "%d", &msg_count);
}
if (argc > 3)
{
sscanf(argv[3], "%d", &msg_blocklength);
}
if (argc > 4)
{
sscanf(argv[4], "%d", &msg_stride);
}
if (msg_stride < msg_blocklength)
{
if (rank == 0)
{
printf("ERROR: stride < blocklength\n");
fflush(stdout);
}
goto main_exit;
}
msg_sz = msg_count * msg_blocklength;
buf_sz = msg_count * msg_stride;
if (rank == 0)
{
printf("niter=%d, msg_count=%d, msg_blocklength=%d, msg_stride=%d\n",
niter, msg_count, msg_blocklength, msg_stride);
printf("msg_sz=%d, buf_sz=%d\n", msg_sz, buf_sz);
fflush(stdout);
}
if (buf_sz > 0)
{
buf = (int *) malloc(buf_sz * sizeof(int));
/* printf("%d: buf=%p\n", rank, buf); fflush(stdout); */
}
else
{
buf = NULL;
}
MPI_Type_vector(msg_count, msg_blocklength, msg_stride, MPI_INT, &dt);
MPI_Type_commit(&dt);
if (rank == 0)
{
/* usleep(10000); */
for (i = 0; i < buf_sz; i++)
{
buf[i] = INT_MAX;
}
for (iter = 0; iter < niter; iter++)
{
for (i = 0; i < buf_sz; i++)
{
buf[i] = iter * buf_sz + i;
}
if (MPI_Send(buf, 1, dt, 1, iter, MPI_COMM_WORLD) != MPI_SUCCESS)
{
printf("ERROR: problem with MPI_Send\n"); fflush(stdout);
}
}
}
else if (rank == 1)
{
MPI_Status status;
for (i = 0; i < buf_sz; i++)
{
buf[i] = INT_MIN;
}
for (iter = 0; iter < niter; iter++)
{
# if defined(TEST_RECV_VECTOR)
{
if (MPI_Recv(buf, msg_sz, MPI_INT, 0, iter, MPI_COMM_WORLD,
&status) != MPI_SUCCESS)
{
printf("ERROR: problem with MPI_Recv\n"); fflush(stdout);
}
for (i = 0; i < msg_sz; i++)
{
const int expected = iter * buf_sz + i / msg_blocklength *
msg_stride + i % msg_blocklength;
if (buf[i] != expected)
{
printf("ERROR: %d != %d, i=%d iter=%d\n", buf[i],
expected, i, iter);
fflush(stdout);
abort();
}
}
}
# else
{
if (MPI_Recv(buf, 1, dt, 0, iter, MPI_COMM_WORLD, &status)
!= MPI_SUCCESS)
{
printf("ERROR: problem with MPI_Recv\n"); fflush(stdout);
}
for (i = 0; i < buf_sz; i++)
{
if (i % msg_stride < msg_blocklength && buf[i] != iter *
buf_sz + i)
{
printf("ERROR: %d != %d, i=%d iter=%d\n", buf[i],
iter * buf_sz + i, i, iter);
fflush(stdout);
abort();
}
}
}
# endif
}
printf("All messages successfully received!\n");
fflush(stdout);
}
main_exit:
MPI_Barrier(MPI_COMM_WORLD);
printf("srvec: process %d finished\n", rank); fflush(stdout);
if (MPI_Finalize() != MPI_SUCCESS)
{
printf("ERROR: problem with MPI_Finalize\n"); fflush(stdout);
}
return 0;
}
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