oplxor.c

mpi并行计算的c++代码 可用vc或gcc编译通过 可以用来搭建并行计算试验环境

/* -*- Mode: C; c-basic-offset:4 ; -*- */
/*
 *
 *  (C) 2003 by Argonne National Laboratory.
 *      See COPYRIGHT in top-level directory.
 */
#include "mpi.h"
#include "mpitestconf.h"
#include <stdio.h>
#include "mpitest.h"

static char MTEST_Descrip[] = "Test MPI_LXOR operations on optional datatypes dupported by MPICH2";

/*
 * This test looks at the handling of logical and for types that are not 
 * integers or are not required integers (e.g., long long).  MPICH2 allows
 * these as well.  A strict MPI test should not include this test.
 */
int main( int argc, char *argv[] )
{
    int errs = 0;
    int rank, size;
    MPI_Comm      comm;
    char cinbuf[3], coutbuf[3];
    unsigned char ucinbuf[3], ucoutbuf[3];
    float finbuf[3], foutbuf[3];
    double dinbuf[3], doutbuf[3];

    MTest_Init( &argc, &argv );

    comm = MPI_COMM_WORLD;

    MPI_Comm_rank( comm, &rank );
    MPI_Comm_size( comm, &size );

    /* char */
    cinbuf[0] = 1;
    cinbuf[1] = 0;
    cinbuf[2] = (rank > 0);

    coutbuf[0] = 0;
    coutbuf[1] = 1;
    coutbuf[2] = 1;
    MPI_Reduce( cinbuf, coutbuf, 3, MPI_CHAR, MPI_LXOR, 0, comm );
    if (rank == 0) {
	if (coutbuf[0] != (size % 2)) {
	    errs++;
	    fprintf( stderr, "char XOR(1) test failed\n" );
	}
	if (coutbuf[1]) {
	    errs++;
	    fprintf( stderr, "char XOR(0) test failed\n" );
	}
	if (coutbuf[2] == (size % 2) && size > 1) {
	    errs++;
	    fprintf( stderr, "char XOR(>) test failed\n" );
	}
    }

    /* unsigned char */
    ucinbuf[0] = 1;
    ucinbuf[1] = 0;
    ucinbuf[2] = (rank > 0);

    ucoutbuf[0] = 0;
    ucoutbuf[1] = 1;
    ucoutbuf[2] = 1;
    MPI_Reduce( ucinbuf, ucoutbuf, 3, MPI_UNSIGNED_CHAR, MPI_LXOR, 0, comm );
    if (rank == 0) {
	if (ucoutbuf[0] != (size % 2)) {
	    errs++;
	    fprintf( stderr, "unsigned char XOR(1) test failed\n" );
	}
	if (ucoutbuf[1]) {
	    errs++;
	    fprintf( stderr, "unsigned char XOR(0) test failed\n" );
	}
	if (ucoutbuf[2] == (size % 2) && size > 1) {
	    errs++;
	    fprintf( stderr, "unsigned char XOR(>) test failed\n" );
	}
    }

    /* float */
    finbuf[0] = 1;
    finbuf[1] = 0;
    finbuf[2] = (rank > 0);

    foutbuf[0] = 0;
    foutbuf[1] = 1;
    foutbuf[2] = 1;
    MPI_Reduce( finbuf, foutbuf, 3, MPI_FLOAT, MPI_LXOR, 0, comm );
    if (rank == 0) {
	if (foutbuf[0] != (size % 2)) {
	    errs++;
	    fprintf( stderr, "float XOR(1) test failed\n" );
	}
	if (foutbuf[1]) {
	    errs++;
	    fprintf( stderr, "float XOR(0) test failed\n" );
	}
	if (foutbuf[2] == (size % 2) && size > 1) {
	    errs++;
	    fprintf( stderr, "float XOR(>) test failed\n" );
	}
    }

    /* double */
    dinbuf[0] = 1;
    dinbuf[1] = 0;
    dinbuf[2] = (rank > 0);

    doutbuf[0] = 0;
    doutbuf[1] = 1;
    doutbuf[2] = 1;
    MPI_Reduce( dinbuf, doutbuf, 3, MPI_DOUBLE, MPI_LXOR, 0, comm );
    if (rank == 0) {
	if (doutbuf[0] != (size % 2)) {
	    errs++;
	    fprintf( stderr, "double XOR(1) test failed\n" );
	}
	if (doutbuf[1]) {
	    errs++;
	    fprintf( stderr, "double XOR(0) test failed\n" );
	}
	if (doutbuf[2] == (size % 2) && size > 1) {
	    errs++;
	    fprintf( stderr, "double XOR(>) test failed\n" );
	}
    }

#ifdef HAVE_LONG_DOUBLE
    { long double ldinbuf[3], ldoutbuf[3];
    /* long double */
    ldinbuf[0] = 1;
    ldinbuf[1] = 0;
    ldinbuf[2] = (rank > 0);

    ldoutbuf[0] = 0;
    ldoutbuf[1] = 1;
    ldoutbuf[2] = 1;
    MPI_Reduce( ldinbuf, ldoutbuf, 3, MPI_LONG_DOUBLE, MPI_LXOR, 0, comm );
    if (rank == 0) {
	if (ldoutbuf[0] != (size % 2)) {
	    errs++;
	    fprintf( stderr, "long double XOR(1) test failed\n" );
	}
	if (ldoutbuf[1]) {
	    errs++;
	    fprintf( stderr, "long double XOR(0) test failed\n" );
	}
	if (ldoutbuf[2] == (size % 2) && size > 1) {
	    errs++;
	    fprintf( stderr, "long double XOR(>) test failed\n" );
	}
    }
    }
#endif

#ifdef HAVE_LONG_LONG
    {
	long long llinbuf[3], lloutbuf[3];
    /* long long */
    llinbuf[0] = 1;
    llinbuf[1] = 0;
    llinbuf[2] = (rank > 0);

    lloutbuf[0] = 0;
    lloutbuf[1] = 1;
    lloutbuf[2] = 1;
    MPI_Reduce( llinbuf, lloutbuf, 3, MPI_LONG_LONG, MPI_LXOR, 0, comm );
    if (rank == 0) {
	if (lloutbuf[0] != (size % 2)) {
	    errs++;
	    fprintf( stderr, "long long XOR(1) test failed\n" );
	}
	if (lloutbuf[1]) {
	    errs++;
	    fprintf( stderr, "long long XOR(0) test failed\n" );
	}
	if (lloutbuf[2] == (size % 2) && size > 1) {
	    errs++;
	    fprintf( stderr, "long long XOR(>) test failed\n" );
	}
    }
    }
#endif


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