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.
13 static char MTEST_Descrip[] = "Test bsend message handling where \
14 different messages are received in different orders";
20 * To ensure that messages remain in the bsend buffer until received,
21 * messages are sent with size MSG_SIZE (ints).
24 #define MSG_SIZE 17000
26 int main( int argc, char *argv[] )
29 int b1[MSG_SIZE], b2[MSG_SIZE], b3[MSG_SIZE], b4[MSG_SIZE];
30 int src, dest, size, rank, i;
34 MTest_Init( &argc, &argv );
36 MPI_Errhandler_set( MPI_COMM_WORLD, MPI_ERRORS_RETURN );
38 comm = MPI_COMM_WORLD;
39 MPI_Comm_rank( comm, &rank );
40 MPI_Comm_size( comm, &size );
44 fprintf( stderr, "At least 2 processes required\n" );
45 MPI_Abort( MPI_COMM_WORLD, 1 );
52 int *buf, bufsize, bsize;
54 bufsize = 4 * (MSG_SIZE * sizeof(int) + MPI_BSEND_OVERHEAD);
55 buf = (int *)malloc( bufsize );
57 fprintf( stderr, "Could not allocate buffer of %d bytes\n",
59 MPI_Abort( MPI_COMM_WORLD, 1 );
61 MPI_Buffer_attach( buf, bufsize );
64 for (i=0; i<MSG_SIZE; i++) {
67 b3[i] = 2 * MSG_SIZE + i;
68 b4[i] = 3 * MSG_SIZE + i;
70 /* Send and reset buffers after bsend returns */
71 MPI_Bsend( b1, MSG_SIZE, MPI_INT, dest, 0, comm );
72 for (i=0; i<MSG_SIZE; i++) b1[i] = -b1[i];
73 MPI_Bsend( b2, MSG_SIZE, MPI_INT, dest, 1, comm );
74 for (i=0; i<MSG_SIZE; i++) b2[i] = -b2[i];
75 MPI_Bsend( b3, MSG_SIZE, MPI_INT, dest, 2, comm );
76 for (i=0; i<MSG_SIZE; i++) b3[i] = -b3[i];
77 MPI_Bsend( b4, MSG_SIZE, MPI_INT, dest, 3, comm );
78 for (i=0; i<MSG_SIZE; i++) b4[i] = -b4[i];
81 /* Detach waits until all messages received */
82 MPI_Buffer_detach( &buf, &bsize );
84 else if (rank == dest) {
87 MPI_Recv( b2, MSG_SIZE, MPI_INT, src, 1, comm, &status );
88 MPI_Recv( b1, MSG_SIZE, MPI_INT, src, 0, comm, &status );
89 MPI_Recv( b4, MSG_SIZE, MPI_INT, src, 3, comm, &status );
90 MPI_Recv( b3, MSG_SIZE, MPI_INT, src, 2, comm, &status );
92 /* Check received data */
93 for (i=0; i<MSG_SIZE; i++) {
96 if (errs < 16) printf( "b1[%d] is %d\n", i, b1[i] );
98 if (b2[i] != MSG_SIZE + i) {
100 if (errs < 16) printf( "b2[%d] is %d\n", i, b2[i] );
102 if (b3[i] != 2 * MSG_SIZE + i) {
104 if (errs < 16) printf( "b3[%d] is %d\n", i, b3[i] );
106 if (b4[i] != 3 * MSG_SIZE + i) {
108 if (errs < 16) printf( "b4[%d] is %d\n", i, b4[i] );
117 MTest_Finalize( errs );