1 /* -*- Mode: C; c-basic-offset:4 ; indent-tabs-mode:nil ; -*- */
4 * (C) 2003 by Argonne National Laboratory.
5 * See COPYRIGHT in top-level directory.
11 /* Test bsend with a buffer with arbitray alignment */
12 #define BUFSIZE 2000*4
13 int main(int argc, char *argv[])
18 char buf[BUFSIZE + 8], *bptr;
19 int bl, i, j, rank, size;
23 MPI_Comm_rank(MPI_COMM_WORLD, &rank);
24 MPI_Comm_size(MPI_COMM_WORLD, &size);
25 for (align = 0; align < 7; align++) {
26 MPI_Buffer_attach(buf + align, BUFSIZE);
28 for (j = 0; j < 10; j++) {
29 for (i = 0; i < 10; i++) {
30 a[i] = (rank + 10 * j) * size + i;
32 MPI_Bsend(a, 10, MPI_INT, 0, 27 + j, MPI_COMM_WORLD);
36 for (i = 0; i < size; i++) {
37 for (j = 0; j < 10; j++) {
40 status.MPI_SOURCE = -20;
41 MPI_Recv(b, 10, MPI_INT, i, 27 + j, MPI_COMM_WORLD, &status);
43 if (status.MPI_TAG != 27 + j) {
45 printf("Wrong tag = %d\n", status.MPI_TAG);
47 if (status.MPI_SOURCE != i) {
49 printf("Wrong source = %d\n", status.MPI_SOURCE);
51 for (k = 0; k < 10; k++) {
52 if (b[k] != (i + 10 * j) * size + k) {
54 printf("(Align=%d) received b[%d] = %d (expected %d) from %d tag %d\n",
55 align, k, b[k], (i + 10 * j), i, 27 + j);
61 MPI_Buffer_detach(&bptr, &bl);
62 if (bptr != buf + align) {
65 ("Did not recieve the same buffer on detach that was provided on init (%p vs %p)\n",