--- /dev/null
+/* -*- Mode: C; c-basic-offset:4 ; indent-tabs-mode:nil ; -*- */
+/*
+ * (C) 2016 by Argonne National Laboratory.
+ * See COPYRIGHT in top-level directory.
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <mpi.h>
+
+#define NUM_LOOPS (128)
+
+int main(int argc, char **argv)
+{
+ int i, rank, size;
+ MPI_Request *req;
+ MPI_Datatype newtype;
+ int snd_buf[3], rcv_buf[3];
+ int count = 2;
+ int *displs;
+
+ MPI_Init(&argc, &argv);
+ MPI_Comm_rank(MPI_COMM_WORLD, &rank);
+ MPI_Comm_size(MPI_COMM_WORLD, &size);
+
+ if (size < 2) {
+ fprintf(stderr, "Must run with at least 2 processes\n");
+ MPI_Abort(MPI_COMM_WORLD, 1);
+ }
+
+ displs = (int *) malloc(count * sizeof(int));
+ for (i = 0; i < count; i++)
+ displs[i] = i * 2;
+
+ MPI_Barrier(MPI_COMM_WORLD);
+
+ /* test isends */
+ MPI_Type_create_indexed_block(count, 1, displs, MPI_INT, &newtype);
+ MPI_Type_commit(&newtype);
+
+ if (rank == 0) {
+ req = (MPI_Request *) malloc(NUM_LOOPS * sizeof(MPI_Request));
+ for (i = 0; i < NUM_LOOPS; i++)
+ MPI_Isend(snd_buf, 1, newtype, !rank, 0, MPI_COMM_WORLD, &req[i]);
+ }
+ else {
+ for (i = 0; i < NUM_LOOPS; i++)
+ MPI_Recv(rcv_buf, 1, newtype, !rank, 0, MPI_COMM_WORLD, MPI_STATUS_IGNORE);
+ }
+ MPI_Type_free(&newtype);
+ if (rank == 0)
+ MPI_Waitall(NUM_LOOPS, req, MPI_STATUSES_IGNORE);
+
+ MPI_Barrier(MPI_COMM_WORLD);
+
+ /* test issends */
+ MPI_Type_create_indexed_block(count, 1, displs, MPI_INT, &newtype);
+ MPI_Type_commit(&newtype);
+
+ if (rank == 0) {
+ req = (MPI_Request *) malloc(NUM_LOOPS * sizeof(MPI_Request));
+ for (i = 0; i < NUM_LOOPS; i++)
+ MPI_Issend(snd_buf, 1, newtype, !rank, 0, MPI_COMM_WORLD, &req[i]);
+ }
+ else {
+ for (i = 0; i < NUM_LOOPS; i++)
+ MPI_Recv(rcv_buf, 1, newtype, !rank, 0, MPI_COMM_WORLD, MPI_STATUS_IGNORE);
+ }
+ MPI_Type_free(&newtype);
+ if (rank == 0)
+ MPI_Waitall(NUM_LOOPS, req, MPI_STATUSES_IGNORE);
+
+ MPI_Barrier(MPI_COMM_WORLD);
+
+ /* test irsends */
+ MPI_Type_create_indexed_block(count, 1, displs, MPI_INT, &newtype);
+ MPI_Type_commit(&newtype);
+
+ req = (MPI_Request *) malloc(NUM_LOOPS * sizeof(MPI_Request));
+ if (rank == 0) {
+ MPI_Barrier(MPI_COMM_WORLD);
+ for (i = 0; i < NUM_LOOPS; i++)
+ MPI_Irsend(snd_buf, 1, newtype, !rank, 0, MPI_COMM_WORLD, &req[i]);
+ }
+ else {
+ for (i = 0; i < NUM_LOOPS; i++)
+ MPI_Irecv(rcv_buf, 1, newtype, !rank, 0, MPI_COMM_WORLD, &req[i]);
+ MPI_Barrier(MPI_COMM_WORLD);
+ }
+ MPI_Type_free(&newtype);
+ MPI_Waitall(NUM_LOOPS, req, MPI_STATUSES_IGNORE);
+
+ MPI_Barrier(MPI_COMM_WORLD);
+
+ MPI_Finalize();
+
+ if (rank == 0)
+ printf(" No Errors\n");
+
+ return 0;
+}