/* One-Sided MPI 2-D Strided Accumulate Test
*
- * Author: James Dinan <dinan@mcs.anl.gov>
+ * Author: James Dinan <dinan@mcs.anl.gov>
* Date : December, 2010
*
* This code performs one-sided accumulate into a 2d patch of a shared array.
#include "mpitest.h"
#include "squelch.h"
-#define XDIM 1024
+#define XDIM 1024
#define YDIM 1024
-#define ITERATIONS 10
+#define ITERATIONS 3
-int main(int argc, char **argv) {
+int main(int argc, char **argv)
+{
int i, j, rank, nranks, peer, bufsize, errors;
double *buffer, *src_buf;
MPI_Win buf_win;
MPI_Alloc_mem(bufsize, MPI_INFO_NULL, &buffer);
MPI_Alloc_mem(bufsize, MPI_INFO_NULL, &src_buf);
- for (i = 0; i < XDIM*YDIM; i++) {
- *(buffer + i) = 1.0 + rank;
+ for (i = 0; i < XDIM * YDIM; i++) {
+ *(buffer + i) = 1.0 + rank;
*(src_buf + i) = 1.0 + rank;
}
MPI_Win_create(buffer, bufsize, 1, MPI_INFO_NULL, MPI_COMM_WORLD, &buf_win);
- peer = (rank+1) % nranks;
+ peer = (rank + 1) % nranks;
for (i = 0; i < ITERATIONS; i++) {
- MPI_Win_lock(MPI_LOCK_EXCLUSIVE, peer, 0, buf_win);
+ MPI_Win_lock(MPI_LOCK_EXCLUSIVE, peer, 0, buf_win);
- for (j = 0; j < YDIM; j++) {
- MPI_Accumulate(src_buf + j*XDIM, XDIM, MPI_DOUBLE, peer,
- j*XDIM*sizeof(double), XDIM, MPI_DOUBLE, MPI_SUM, buf_win);
- }
+ for (j = 0; j < YDIM; j++) {
+ MPI_Accumulate(src_buf + j * XDIM, XDIM, MPI_DOUBLE, peer,
+ j * XDIM * sizeof(double), XDIM, MPI_DOUBLE, MPI_SUM, buf_win);
+ }
- MPI_Win_unlock(peer, buf_win);
+ MPI_Win_unlock(peer, buf_win);
}
MPI_Barrier(MPI_COMM_WORLD);
MPI_Win_lock(MPI_LOCK_EXCLUSIVE, rank, 0, buf_win);
for (i = errors = 0; i < XDIM; i++) {
- for (j = 0; j < YDIM; j++) {
- const double actual = *(buffer + i + j*XDIM);
- const double expected = (1.0 + rank) + (1.0 + ((rank+nranks-1)%nranks)) * (ITERATIONS);
- if (fabs(actual - expected) > 1.0e-10) {
- SQUELCH( printf("%d: Data validation failed at [%d, %d] expected=%f actual=%f\n",
- rank, j, i, expected, actual); );
- errors++;
- fflush(stdout);
+ for (j = 0; j < YDIM; j++) {
+ const double actual = *(buffer + i + j * XDIM);
+ const double expected =
+ (1.0 + rank) + (1.0 + ((rank + nranks - 1) % nranks)) * (ITERATIONS);
+ if (fabs(actual - expected) > 1.0e-10) {
+ SQUELCH(printf("%d: Data validation failed at [%d, %d] expected=%f actual=%f\n",
+ rank, j, i, expected, actual););
+ errors++;
+ fflush(stdout);
+ }
}
- }
}
MPI_Win_unlock(rank, buf_win);
MPI_Free_mem(buffer);
MPI_Free_mem(src_buf);
- MTest_Finalize( errors );
+ MTest_Finalize(errors);
MPI_Finalize();
- return MTestReturnValue( errors );
+ return MTestReturnValue(errors);
}