- err = MPI_Gatherv( NULL, 0, datatype,
- buf, recvcounts, recvdispls, datatype,
- (rank == 0) ? MPI_ROOT : MPI_PROC_NULL,
- comm );
- if (err) {
- errs++;
- MTestPrintError( err );
- }
- /* Test that no other process in this group received the
- broadcast */
- if (rank != 0) {
- for (i=0; i<count; i++) {
- if (buf[i] != -1) {
- errs++;
- }
- }
- }
- else {
- /* Check for the correct data */
- for (i=0; i<count*rsize; i++) {
- if (buf[i] != i) {
- errs++;
- }
- }
- }
- }
- else {
- /* In the right group */
- buf = (int *)malloc( count * sizeof(int) );
- for (i=0; i<count; i++) buf[i] = rank * count + i;
- err = MPI_Gatherv( buf, count, datatype,
- NULL, 0, 0, datatype, 0, comm );
- if (err) {
- errs++;
- MTestPrintError( err );
- }
- }
- free( buf );
- free( recvcounts );
- free( recvdispls );
- }
- MTestFreeComm( &comm );
+ for (count = 1; count < 65000; count = 2 * count) {
+ /* Get an intercommunicator */
+ recvcounts = (int *) malloc(rsize * sizeof(int));
+ recvdispls = (int *) malloc(rsize * sizeof(int));
+ /* This simple test duplicates the Gather test,
+ * using the same lengths for all messages */
+ for (i = 0; i < rsize; i++) {
+ recvcounts[i] = count;
+ recvdispls[i] = count * i;
+ }
+ if (leftGroup) {
+ buf = (int *) malloc(count * rsize * sizeof(int));
+ for (i = 0; i < count * rsize; i++)
+ buf[i] = -1;
+
+ err = MTest_Gatherv(NULL, 0, datatype,
+ buf, recvcounts, recvdispls, datatype,
+ (rank == 0) ? MPI_ROOT : MPI_PROC_NULL, comm);
+ if (err) {
+ errs++;
+ MTestPrintError(err);
+ }
+ /* Test that no other process in this group received the
+ * broadcast */
+ if (rank != 0) {
+ for (i = 0; i < count; i++) {
+ if (buf[i] != -1) {
+ errs++;
+ }
+ }
+ }
+ else {
+ /* Check for the correct data */
+ for (i = 0; i < count * rsize; i++) {
+ if (buf[i] != i) {
+ errs++;
+ }
+ }
+ }
+ }
+ else {
+ /* In the right group */
+ buf = (int *) malloc(count * sizeof(int));
+ for (i = 0; i < count; i++)
+ buf[i] = rank * count + i;
+ err = MTest_Gatherv(buf, count, datatype, NULL, 0, 0, datatype, 0, comm);
+ if (err) {
+ errs++;
+ MTestPrintError(err);
+ }
+ }
+ free(buf);
+ free(recvcounts);
+ free(recvdispls);
+ }
+ MTestFreeComm(&comm);