static char MTEST_Descrip[] = "Test MPI_Exscan";
*/
-int main( int argc, char *argv[] )
+int main(int argc, char *argv[])
{
int errs = 0;
int rank, size;
- int minsize = 2, count;
+ int minsize = 2, count;
int *sendbuf, *recvbuf, i;
- MPI_Comm comm;
+ MPI_Comm comm;
- MTest_Init( &argc, &argv );
+ 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;
+ /* 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;
- MPI_Comm_rank( comm, &rank );
- MPI_Comm_size( comm, &size );
-
- for (count = 1; count < 65000; count = count * 2) {
+ MPI_Comm_rank(comm, &rank);
+ MPI_Comm_size(comm, &size);
- sendbuf = (int *)malloc( count * sizeof(int) );
- recvbuf = (int *)malloc( count * sizeof(int) );
+ for (count = 1; count < 65000; count = count * 2) {
- for (i=0; i<count; i++) {
- sendbuf[i] = rank + i * size;
- recvbuf[i] = -1;
- }
-
- MPI_Exscan( sendbuf, recvbuf, count, MPI_INT, MPI_SUM, comm );
+ sendbuf = (int *) malloc(count * sizeof(int));
+ recvbuf = (int *) malloc(count * sizeof(int));
- /* Check the results. rank 0 has no data */
- if (rank > 0) {
- int result;
- for (i=0; i<count; i++) {
- result = rank * i * size + ((rank) * (rank-1))/2;
- if (recvbuf[i] != result) {
- errs++;
- if (errs < 10) {
- fprintf( stderr, "Error in recvbuf[%d] = %d on %d, expected %d\n",
- i, recvbuf[i], rank, result );
- }
- }
- }
- }
+ for (i = 0; i < count; i++) {
+ sendbuf[i] = rank + i * size;
+ recvbuf[i] = -1;
+ }
+
+ MPI_Exscan(sendbuf, recvbuf, count, MPI_INT, MPI_SUM, comm);
+
+ /* Check the results. rank 0 has no data */
+ if (rank > 0) {
+ int result;
+ for (i = 0; i < count; i++) {
+ result = rank * i * size + ((rank) * (rank - 1)) / 2;
+ if (recvbuf[i] != result) {
+ errs++;
+ if (errs < 10) {
+ fprintf(stderr, "Error in recvbuf[%d] = %d on %d, expected %d\n",
+ i, recvbuf[i], rank, result);
+ }
+ }
+ }
+ }
#if MTEST_HAVE_MIN_MPI_VERSION(2,2)
/* now try the MPI_IN_PLACE flavor */
- for (i=0; i<count; i++) {
- sendbuf[i] = -1; /* unused */
+ for (i = 0; i < count; i++) {
+ sendbuf[i] = -1; /* unused */
recvbuf[i] = rank + i * size;
}
- MPI_Exscan( MPI_IN_PLACE, recvbuf, count, MPI_INT, MPI_SUM, comm );
+ MPI_Exscan(MPI_IN_PLACE, recvbuf, count, MPI_INT, MPI_SUM, comm);
/* Check the results. rank 0's data must remain unchanged */
- for (i=0; i<count; i++) {
+ for (i = 0; i < count; i++) {
int result;
if (rank == 0)
result = rank + i * size;
else
- result = rank * i * size + ((rank) * (rank-1))/2;
+ result = rank * i * size + ((rank) * (rank - 1)) / 2;
if (recvbuf[i] != result) {
errs++;
if (errs < 10) {
- fprintf( stderr, "Error in recvbuf[%d] = %d on %d, expected %d\n",
- i, recvbuf[i], rank, result );
+ fprintf(stderr, "Error in recvbuf[%d] = %d on %d, expected %d\n",
+ i, recvbuf[i], rank, result);
}
}
}
-
- MPI_Comm_set_errhandler(MPI_COMM_WORLD, MPI_ERRORS_RETURN);
- /* Make sure that we check for buffer aliasing properly */
- if (MPI_SUCCESS == MPI_Exscan( recvbuf, recvbuf, count, MPI_INT, MPI_SUM, comm ))
- errs++;
#endif
- free( sendbuf );
- free( recvbuf );
- }
- MTestFreeComm( &comm );
+ free(sendbuf);
+ free(recvbuf);
+ }
+ MTestFreeComm(&comm);
}
- MTest_Finalize( errs );
+ MTest_Finalize(errs);
MPI_Finalize();
return 0;
}
