Esempi in C++ (Cpp) per MPI_Op_commutative

Esempio n. 1

File: op_commutative.c Progetto: NexMirror/MPICH

int main(int argc, char *argv[])
{
    MPI_Op c_uop = MPI_OP_NULL;
    MPI_Op nc_uop = MPI_OP_NULL;
    int is_commutative = 0;

    MTest_Init(&argc, &argv);

    /* make sure that user-define ops work too */
    MPI_Op_create(&user_op, 1 /*commute */ , &c_uop);
    MPI_Op_create(&user_op, 0 /*!commute */ , &nc_uop);

#if MTEST_HAVE_MIN_MPI_VERSION(2,2)
    /* this function was added in MPI-2.2 */

#define CHECK_COMMUTATIVE(op_)                      \
    do {                                            \
        MPI_Op_commutative((op_), &is_commutative); \
        if (!is_commutative) { ++errs; }            \
    } while (0)

    /* Check all predefined reduction operations for commutivity.
     * This list is from section 5.9.2 of the MPI-2.1 standard */
    CHECK_COMMUTATIVE(MPI_MAX);
    CHECK_COMMUTATIVE(MPI_MIN);
    CHECK_COMMUTATIVE(MPI_SUM);
    CHECK_COMMUTATIVE(MPI_PROD);
    CHECK_COMMUTATIVE(MPI_LAND);
    CHECK_COMMUTATIVE(MPI_BAND);
    CHECK_COMMUTATIVE(MPI_LOR);
    CHECK_COMMUTATIVE(MPI_BOR);
    CHECK_COMMUTATIVE(MPI_LXOR);
    CHECK_COMMUTATIVE(MPI_BXOR);
    CHECK_COMMUTATIVE(MPI_MAXLOC);
    CHECK_COMMUTATIVE(MPI_MINLOC);

#undef CHECK_COMMUTATIVE

    MPI_Op_commutative(c_uop, &is_commutative);
    if (!is_commutative) {
        ++errs;
    }

    /* also check our non-commutative user defined operation */
    MPI_Op_commutative(nc_uop, &is_commutative);
    if (is_commutative) {
        ++errs;
    }
#endif

    MPI_Op_free(&nc_uop);
    MPI_Op_free(&c_uop);

    MTest_Finalize(errs);
    MPI_Finalize();
    return 0;
}

Esempio n. 2

File: op_commutative_f.c Progetto: Dissolubilis/ompi-svn-mirror

void ompi_op_commutative_f(MPI_Fint *op, MPI_Fint *commute, MPI_Fint *ierr)
{
    int c_ierr;
    MPI_Op c_op;
    OMPI_SINGLE_NAME_DECL(commute);

    c_op = MPI_Op_f2c(*op);

    c_ierr = MPI_Op_commutative(c_op, OMPI_SINGLE_NAME_CONVERT(commute));
    if (NULL != ierr) *ierr = OMPI_INT_2_FINT(c_ierr);

    if (MPI_SUCCESS == c_ierr) {
        OMPI_SINGLE_INT_2_FINT(commute);
    }
}