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/*
* Copyright (C) by Argonne National Laboratory
* See COPYRIGHT in top-level directory
*/
#include "mpi.h"
#include "mpitestconf.h"
#include <stdio.h>
#include <string.h>
#include "mpitest.h"
/*
static char MTEST_Descrip[] = "Test MPI_MAXLOC operations on datatypes dupported by MPICH";
*/
/*
* This test looks at the handling of char and types that are not required
* integers (e.g., long long). MPICH allows
* these as well. A strict MPI test should not include this test.
*
* The rule on max loc is that if there is a tie in the value, the minimum
* rank is used (see 4.9.3 in the MPI-1 standard)
*/
int main(int argc, char *argv[])
{
int errs = 0;
int rank, size;
MPI_Comm comm;
MTest_Init(&argc, &argv);
comm = MPI_COMM_WORLD;
MPI_Comm_rank(comm, &rank);
MPI_Comm_size(comm, &size);
/* 2 int */
{
struct twoint {
int val;
int loc;
} cinbuf[3], coutbuf[3];
cinbuf[0].val = 1;
cinbuf[0].loc = rank;
cinbuf[1].val = 0;
cinbuf[1].loc = rank;
cinbuf[2].val = rank;
cinbuf[2].loc = rank;
coutbuf[0].val = 0;
coutbuf[0].loc = -1;
coutbuf[1].val = 1;
coutbuf[1].loc = -1;
coutbuf[2].val = 1;
coutbuf[2].loc = -1;
MPI_Reduce(cinbuf, coutbuf, 3, MPI_2INT, MPI_MAXLOC, 0, comm);
if (rank == 0) {
if (coutbuf[0].val != 1 || coutbuf[0].loc != 0) {
errs++;
fprintf(stderr, "2int MAXLOC(1) test failed\n");
}
if (coutbuf[1].val != 0) {
errs++;
fprintf(stderr, "2int MAXLOC(0) test failed, value = %d, should be zero\n",
coutbuf[1].val);
}
if (coutbuf[1].loc != 0) {
errs++;
fprintf(stderr,
"2int MAXLOC(0) test failed, location of max = %d, should be zero\n",
coutbuf[1].loc);
}
if (coutbuf[2].val != size - 1 || coutbuf[2].loc != size - 1) {
errs++;
fprintf(stderr, "2int MAXLOC(>) test failed\n");
}
}
}
/* float int */
{
struct floatint {
float val;
int loc;
} cinbuf[3], coutbuf[3];
cinbuf[0].val = 1;
cinbuf[0].loc = rank;
cinbuf[1].val = 0;
cinbuf[1].loc = rank;
cinbuf[2].val = (float) rank;
cinbuf[2].loc = rank;
coutbuf[0].val = 0;
coutbuf[0].loc = -1;
coutbuf[1].val = 1;
coutbuf[1].loc = -1;
coutbuf[2].val = 1;
coutbuf[2].loc = -1;
MPI_Reduce(cinbuf, coutbuf, 3, MPI_FLOAT_INT, MPI_MAXLOC, 0, comm);
if (rank == 0) {
if (coutbuf[0].val != 1 || coutbuf[0].loc != 0) {
errs++;
fprintf(stderr, "float-int MAXLOC(1) test failed\n");
}
if (coutbuf[1].val != 0) {
errs++;
fprintf(stderr, "float-int MAXLOC(0) test failed, value = %f, should be zero\n",
coutbuf[1].val);
}
if (coutbuf[1].loc != 0) {
errs++;
fprintf(stderr,
"float-int MAXLOC(0) test failed, location of max = %d, should be zero\n",
coutbuf[1].loc);
}
if (coutbuf[2].val != size - 1 || coutbuf[2].loc != size - 1) {
errs++;
fprintf(stderr, "float-int MAXLOC(>) test failed\n");
}
}
}
/* long int */
{
struct longint {
long val;
int loc;
} cinbuf[3], coutbuf[3];
cinbuf[0].val = 1;
cinbuf[0].loc = rank;
cinbuf[1].val = 0;
cinbuf[1].loc = rank;
cinbuf[2].val = rank;
cinbuf[2].loc = rank;
coutbuf[0].val = 0;
coutbuf[0].loc = -1;
coutbuf[1].val = 1;
coutbuf[1].loc = -1;
coutbuf[2].val = 1;
coutbuf[2].loc = -1;
MPI_Reduce(cinbuf, coutbuf, 3, MPI_LONG_INT, MPI_MAXLOC, 0, comm);
if (rank == 0) {
if (coutbuf[0].val != 1 || coutbuf[0].loc != 0) {
errs++;
fprintf(stderr, "long-int MAXLOC(1) test failed\n");
}
if (coutbuf[1].val != 0) {
errs++;
fprintf(stderr, "long-int MAXLOC(0) test failed, value = %ld, should be zero\n",
coutbuf[1].val);
}
if (coutbuf[1].loc != 0) {
errs++;
fprintf(stderr,
"long-int MAXLOC(0) test failed, location of max = %d, should be zero\n",
coutbuf[1].loc);
}
if (coutbuf[2].val != size - 1 || coutbuf[2].loc != size - 1) {
errs++;
fprintf(stderr, "long-int MAXLOC(>) test failed\n");
}
}
}
/* short int */
{
struct shortint {
short val;
int loc;
} cinbuf[3], coutbuf[3];
cinbuf[0].val = 1;
cinbuf[0].loc = rank;
cinbuf[1].val = 0;
cinbuf[1].loc = rank;
cinbuf[2].val = rank;
cinbuf[2].loc = rank;
coutbuf[0].val = 0;
coutbuf[0].loc = -1;
coutbuf[1].val = 1;
coutbuf[1].loc = -1;
coutbuf[2].val = 1;
coutbuf[2].loc = -1;
MPI_Reduce(cinbuf, coutbuf, 3, MPI_SHORT_INT, MPI_MAXLOC, 0, comm);
if (rank == 0) {
if (coutbuf[0].val != 1 || coutbuf[0].loc != 0) {
errs++;
fprintf(stderr, "short-int MAXLOC(1) test failed\n");
}
if (coutbuf[1].val != 0) {
errs++;
fprintf(stderr, "short-int MAXLOC(0) test failed, value = %d, should be zero\n",
coutbuf[1].val);
}
if (coutbuf[1].loc != 0) {
errs++;
fprintf(stderr,
"short-int MAXLOC(0) test failed, location of max = %d, should be zero\n",
coutbuf[1].loc);
}
if (coutbuf[2].val != size - 1) {
errs++;
fprintf(stderr, "short-int MAXLOC(>) test failed, value = %d, should be %d\n",
coutbuf[2].val, size - 1);
}
if (coutbuf[2].loc != size - 1) {
errs++;
fprintf(stderr,
"short-int MAXLOC(>) test failed, location of max = %d, should be %d\n",
coutbuf[2].loc, size - 1);
}
}
}
/* double int */
{
struct doubleint {
double val;
int loc;
} cinbuf[3], coutbuf[3];
cinbuf[0].val = 1;
cinbuf[0].loc = rank;
cinbuf[1].val = 0;
cinbuf[1].loc = rank;
cinbuf[2].val = rank;
cinbuf[2].loc = rank;
coutbuf[0].val = 0;
coutbuf[0].loc = -1;
coutbuf[1].val = 1;
coutbuf[1].loc = -1;
coutbuf[2].val = 1;
coutbuf[2].loc = -1;
MPI_Reduce(cinbuf, coutbuf, 3, MPI_DOUBLE_INT, MPI_MAXLOC, 0, comm);
if (rank == 0) {
if (coutbuf[0].val != 1 || coutbuf[0].loc != 0) {
errs++;
fprintf(stderr, "double-int MAXLOC(1) test failed\n");
}
if (coutbuf[1].val != 0) {
errs++;
fprintf(stderr, "double-int MAXLOC(0) test failed, value = %lf, should be zero\n",
coutbuf[1].val);
}
if (coutbuf[1].loc != 0) {
errs++;
fprintf(stderr,
"double-int MAXLOC(0) test failed, location of max = %d, should be zero\n",
coutbuf[1].loc);
}
if (coutbuf[2].val != size - 1 || coutbuf[2].loc != size - 1) {
errs++;
fprintf(stderr, "double-int MAXLOC(>) test failed\n");
}
}
}
#ifdef HAVE_LONG_DOUBLE
/* long double int */
{
struct longdoubleint {
long double val;
int loc;
} cinbuf[3], coutbuf[3];
/* avoid valgrind warnings about padding bytes in the long double */
memset(&cinbuf[0], 0, sizeof(cinbuf));
memset(&coutbuf[0], 0, sizeof(coutbuf));
cinbuf[0].val = 1;
cinbuf[0].loc = rank;
cinbuf[1].val = 0;
cinbuf[1].loc = rank;
cinbuf[2].val = rank;
cinbuf[2].loc = rank;
coutbuf[0].val = 0;
coutbuf[0].loc = -1;
coutbuf[1].val = 1;
coutbuf[1].loc = -1;
coutbuf[2].val = 1;
coutbuf[2].loc = -1;
if (MPI_LONG_DOUBLE != MPI_DATATYPE_NULL) {
MPI_Reduce(cinbuf, coutbuf, 3, MPI_LONG_DOUBLE_INT, MPI_MAXLOC, 0, comm);
if (rank == 0) {
if (coutbuf[0].val != 1 || coutbuf[0].loc != 0) {
errs++;
fprintf(stderr, "long double-int MAXLOC(1) test failed\n");
}
if (coutbuf[1].val != 0) {
errs++;
fprintf(stderr,
"long double-int MAXLOC(0) test failed, value = %lf, should be zero\n",
(double) coutbuf[1].val);
}
if (coutbuf[1].loc != 0) {
errs++;
fprintf(stderr,
"long double-int MAXLOC(0) test failed, location of max = %d, should be zero\n",
coutbuf[1].loc);
}
if (coutbuf[2].val != size - 1) {
errs++;
fprintf(stderr,
"long double-int MAXLOC(>) test failed, value = %lf, should be %d\n",
(double) coutbuf[2].val, size - 1);
}
if (coutbuf[2].loc != size - 1) {
errs++;
fprintf(stderr,
"long double-int MAXLOC(>) test failed, location of max = %d, should be %d\n",
coutbuf[2].loc, size - 1);
}
}
}
}
#endif
MTest_Finalize(errs);
return MTestReturnValue(errs);
}
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