#define VEC_NELM 128
#define VEC_STRIDE 8
-int main( int argc, char *argv[] )
+int main(int argc, char *argv[])
{
int errs = 0;
int rank, size, source, dest, i;
- MPI_Comm comm;
- MPI_Status status;
- MPI_Request req;
- MPI_Datatype strideType;
- MPI_Datatype tmpType[1024];
- int *buf = 0;
+ MPI_Comm comm;
+ MPI_Status status;
+ MPI_Request req;
+ MPI_Datatype strideType;
+ MPI_Datatype tmpType[1024];
+ int *buf = 0;
- MTest_Init( &argc, &argv );
+ MTest_Init(&argc, &argv);
comm = MPI_COMM_WORLD;
- MPI_Comm_rank( comm, &rank );
- MPI_Comm_size( comm, &size );
+ MPI_Comm_rank(comm, &rank);
+ MPI_Comm_size(comm, &size);
if (size < 2) {
- fprintf( stderr, "This test requires at least two processes." );
- MPI_Abort( MPI_COMM_WORLD, 1 );
- exit(1);
+ fprintf(stderr, "This test requires at least two processes.");
+ MPI_Abort(MPI_COMM_WORLD, 1);
}
- source = 0;
- dest = size - 1;
-
- /*
- The idea here is to create a simple but non-contig datatype,
- perform an irecv with it, free it, and then create
- many new datatypes. While not a complete test, if the datatype
- was freed and the space was reused, this test may detect
- that error
- A similar test for sends might work by sending a large enough message
- to force the use of rendezvous send.
- */
- MPI_Type_vector( VEC_NELM, 1, VEC_STRIDE, MPI_INT, &strideType );
- MPI_Type_commit( &strideType );
+ source = 0;
+ dest = size - 1;
+
+ /*
+ * The idea here is to create a simple but non-contig datatype,
+ * perform an irecv with it, free it, and then create
+ * many new datatypes. While not a complete test, if the datatype
+ * was freed and the space was reused, this test may detect
+ * that error
+ * A similar test for sends might work by sending a large enough message
+ * to force the use of rendezvous send.
+ */
+ MPI_Type_vector(VEC_NELM, 1, VEC_STRIDE, MPI_INT, &strideType);
+ MPI_Type_commit(&strideType);
if (rank == dest) {
- buf = (int *)malloc( VEC_NELM * VEC_STRIDE * sizeof(int) );
- for (i=0; i<VEC_NELM*VEC_STRIDE; i++) buf[i] = -i;
- MPI_Irecv( buf, 1, strideType, source, 0, comm, &req );
- MPI_Type_free( &strideType );
-
- for (i=0; i<1024; i++) {
- MPI_Type_vector( VEC_NELM, 1, 1, MPI_INT, &tmpType[i] );
- MPI_Type_commit( &tmpType[i] );
- }
-
- MPI_Sendrecv( NULL, 0, MPI_INT, source, 1,
- NULL, 0, MPI_INT, source, 1, comm, &status );
-
- MPI_Wait( &req, &status );
- for (i=0; i<VEC_NELM; i++) {
- if (buf[VEC_STRIDE*i] != i) {
- errs++;
- if (errs < 10) {
- printf( "buf[%d] = %d, expected %d\n", VEC_STRIDE*i,
- buf[VEC_STRIDE*i], i );
- }
- }
- }
- for (i=0; i<1024; i++) {
- MPI_Type_free( &tmpType[i] );
- }
- free( buf );
+ buf = (int *) malloc(VEC_NELM * VEC_STRIDE * sizeof(int));
+ for (i = 0; i < VEC_NELM * VEC_STRIDE; i++)
+ buf[i] = -i;
+ MPI_Irecv(buf, 1, strideType, source, 0, comm, &req);
+ MPI_Type_free(&strideType);
+
+ for (i = 0; i < 1024; i++) {
+ MPI_Type_vector(VEC_NELM, 1, 1, MPI_INT, &tmpType[i]);
+ MPI_Type_commit(&tmpType[i]);
+ }
+
+ MPI_Sendrecv(NULL, 0, MPI_INT, source, 1, NULL, 0, MPI_INT, source, 1, comm, &status);
+
+ MPI_Wait(&req, &status);
+ for (i = 0; i < VEC_NELM; i++) {
+ if (buf[VEC_STRIDE * i] != i) {
+ errs++;
+ if (errs < 10) {
+ printf("buf[%d] = %d, expected %d\n", VEC_STRIDE * i, buf[VEC_STRIDE * i], i);
+ }
+ }
+ }
+ for (i = 0; i < 1024; i++) {
+ MPI_Type_free(&tmpType[i]);
+ }
+ free(buf);
}
else if (rank == source) {
- buf = (int *)malloc( VEC_NELM * sizeof(int) );
- for (i=0; i<VEC_NELM; i++) buf[i] = i;
- /* Synchronize with the receiver */
- MPI_Sendrecv( NULL, 0, MPI_INT, dest, 1,
- NULL, 0, MPI_INT, dest, 1, comm, &status );
- MPI_Send( buf, VEC_NELM, MPI_INT, dest, 0, comm );
- free( buf );
+ buf = (int *) malloc(VEC_NELM * sizeof(int));
+ for (i = 0; i < VEC_NELM; i++)
+ buf[i] = i;
+ /* Synchronize with the receiver */
+ MPI_Sendrecv(NULL, 0, MPI_INT, dest, 1, NULL, 0, MPI_INT, dest, 1, comm, &status);
+ MPI_Send(buf, VEC_NELM, MPI_INT, dest, 0, comm);
+ free(buf);
}
/* Clean up the strideType */
if (rank != dest) {
- MPI_Type_free( &strideType );
+ MPI_Type_free(&strideType);
}
- MTest_Finalize( errs );
+ MTest_Finalize(errs);
MPI_Finalize();
return 0;
}
