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/*
* Copyright (C) by Argonne National Laboratory
* See COPYRIGHT in top-level directory
*/
#include "mpi.h"
#include <stdlib.h>
#include <string.h>
#include <stdio.h>
/* tests various miscellaneous functions. */
#define VERBOSE 0
static void handle_error(int errcode, const char *str)
{
char msg[MPI_MAX_ERROR_STRING];
int resultlen;
MPI_Error_string(errcode, msg, &resultlen);
fprintf(stderr, "%s: %s\n", str, msg);
}
int main(int argc, char **argv)
{
int buf[1024], amode, flag, mynod, len, i;
int errs = 0, toterrs;
MPI_File fh;
MPI_Status status;
MPI_Datatype newtype;
MPI_Offset disp, offset;
MPI_Group group;
MPI_Datatype etype, filetype;
char datarep[25], *filename;
int errcode = 0;
MPI_Init(&argc, &argv);
MPI_Comm_rank(MPI_COMM_WORLD, &mynod);
/* process 0 takes the file name as a command-line argument and
broadcasts it to other processes */
if (!mynod) {
i = 1;
while ((i < argc) && strcmp("-fname", *argv)) {
i++;
argv++;
}
if (i >= argc) {
fprintf(stderr, "\n*# Usage: misc -fname filename\n\n");
MPI_Abort(MPI_COMM_WORLD, 1);
}
argv++;
len = strlen(*argv);
filename = (char *) malloc(len + 1);
strcpy(filename, *argv);
MPI_Bcast(&len, 1, MPI_INT, 0, MPI_COMM_WORLD);
MPI_Bcast(filename, len + 1, MPI_CHAR, 0, MPI_COMM_WORLD);
} else {
MPI_Bcast(&len, 1, MPI_INT, 0, MPI_COMM_WORLD);
filename = (char *) malloc(len + 1);
MPI_Bcast(filename, len + 1, MPI_CHAR, 0, MPI_COMM_WORLD);
}
errcode = MPI_File_open(MPI_COMM_WORLD, filename,
MPI_MODE_CREATE | MPI_MODE_RDWR, MPI_INFO_NULL, &fh);
if (errcode != MPI_SUCCESS) {
handle_error(errcode, "MPI_File_open");
}
errcode = MPI_File_write(fh, buf, 1024, MPI_INT, &status);
if (errcode != MPI_SUCCESS) {
handle_error(errcode, "MPI_File_write");
}
errcode = MPI_File_sync(fh);
if (errcode != MPI_SUCCESS) {
handle_error(errcode, "MPI_File_sync");
}
errcode = MPI_File_get_amode(fh, &amode);
if (errcode != MPI_SUCCESS) {
handle_error(errcode, "MPI_File_get_amode");
}
#if VERBOSE
if (!mynod)
fprintf(stderr, "testing MPI_File_get_amode\n");
#endif
if (amode != (MPI_MODE_CREATE | MPI_MODE_RDWR)) {
errs++;
fprintf(stderr, "amode is %d, should be %d\n\n", amode, MPI_MODE_CREATE | MPI_MODE_RDWR);
}
errcode = MPI_File_get_atomicity(fh, &flag);
if (errcode != MPI_SUCCESS) {
handle_error(errcode, "MPI_File_get_atomicity");
}
if (flag) {
errs++;
fprintf(stderr, "atomicity is %d, should be 0\n", flag);
}
#if VERBOSE
if (!mynod)
fprintf(stderr, "setting atomic mode\n");
#endif
errcode = MPI_File_set_atomicity(fh, 1);
if (errcode != MPI_SUCCESS) {
handle_error(errcode, "MPI_File_set_atomicity");
}
errcode = MPI_File_get_atomicity(fh, &flag);
if (errcode != MPI_SUCCESS) {
handle_error(errcode, "MPI_File_get_atomicity");
}
if (!flag) {
errs++;
fprintf(stderr, "atomicity is %d, should be 1\n", flag);
}
errcode = MPI_File_set_atomicity(fh, 0);
if (errcode != MPI_SUCCESS) {
handle_error(errcode, "MPI_File_set_atomicity");
}
#if VERBOSE
if (!mynod)
fprintf(stderr, "reverting back to nonatomic mode\n");
#endif
MPI_Type_vector(10, 10, 20, MPI_INT, &newtype);
MPI_Type_commit(&newtype);
errcode = MPI_File_set_view(fh, 1000, MPI_INT, newtype, "native", MPI_INFO_NULL);
if (errcode != MPI_SUCCESS) {
handle_error(errcode, "MPI_File_set_view");
}
#if VERBOSE
if (!mynod)
fprintf(stderr, "testing MPI_File_get_view\n");
#endif
errcode = MPI_File_get_view(fh, &disp, &etype, &filetype, datarep);
if (errcode != MPI_SUCCESS) {
handle_error(errcode, "MPI_File_get_view");
}
if ((disp != 1000) || strcmp(datarep, "native")) {
errs++;
fprintf(stderr, "disp = %@LL@, datarep = %s, should be 1000, native\n\n", disp, datarep);
}
#if VERBOSE
if (!mynod)
fprintf(stderr, "testing MPI_File_get_byte_offset\n");
#endif
errcode = MPI_File_get_byte_offset(fh, 10, &disp);
if (errcode != MPI_SUCCESS) {
handle_error(errcode, "MPI_File_get_byte_offset");
}
if (disp != (1000 + 20 * sizeof(int))) {
errs++;
fprintf(stderr, "byte offset = %@LL@, should be %d\n\n",
disp, (int) (1000 + 20 * sizeof(int)));
}
errcode = MPI_File_get_group(fh, &group);
if (errcode != MPI_SUCCESS) {
handle_error(errcode, "MPI_File_get_group");
}
#if VERBOSE
if (!mynod)
fprintf(stderr, "testing MPI_File_set_size\n");
#endif
errcode = MPI_File_set_size(fh, 1000 + 15 * sizeof(int));
if (errcode != MPI_SUCCESS) {
handle_error(errcode, "MPI_File_set_size");
}
MPI_Barrier(MPI_COMM_WORLD);
errcode = MPI_File_sync(fh);
if (errcode != MPI_SUCCESS) {
handle_error(errcode, "MPI_File_sync");
}
errcode = MPI_File_get_size(fh, &disp);
if (errcode != MPI_SUCCESS) {
handle_error(errcode, "MPI_File_get_size");
}
if (disp != 1000 + 15 * sizeof(int)) {
errs++;
fprintf(stderr, "file size = %@LL@, should be %d\n\n",
disp, (int) (1000 + 15 * sizeof(int)));
}
#if VERBOSE
if (!mynod)
fprintf(stderr, "seeking to eof and testing MPI_File_get_position\n");
#endif
errcode = MPI_File_seek(fh, 0, MPI_SEEK_END);
if (errcode != MPI_SUCCESS) {
handle_error(errcode, "MPI_File_seek");
}
errcode = MPI_File_get_position(fh, &disp);
if (errcode != MPI_SUCCESS) {
handle_error(errcode, "MPI_File_get_position");
}
if (disp != 10) {
errs++;
fprintf(stderr, "file pointer posn = %@LL@, should be 10\n\n", disp);
}
#if VERBOSE
if (!mynod)
fprintf(stderr, "testing MPI_File_get_byte_offset\n");
#endif
errcode = MPI_File_get_byte_offset(fh, disp, &offset);
if (errcode != MPI_SUCCESS) {
handle_error(errcode, "MPI_File_get_byte_offset");
}
if (offset != (1000 + 20 * sizeof(int))) {
errs++;
fprintf(stderr, "byte offset = %@LL@, should be %d\n\n",
offset, (int) (1000 + 20 * sizeof(int)));
}
MPI_Barrier(MPI_COMM_WORLD);
#if VERBOSE
if (!mynod)
fprintf(stderr, "testing MPI_File_seek with MPI_SEEK_CUR\n");
#endif
errcode = MPI_File_seek(fh, -10, MPI_SEEK_CUR);
if (errcode != MPI_SUCCESS) {
handle_error(errcode, "MPI_File_seek");
}
errcode = MPI_File_get_position(fh, &disp);
if (errcode != MPI_SUCCESS) {
handle_error(errcode, "MPI_File_get_position");
}
errcode = MPI_File_get_byte_offset(fh, disp, &offset);
if (errcode != MPI_SUCCESS) {
handle_error(errcode, "MPI_File_get_byte_offset");
}
if (offset != 1000) {
errs++;
fprintf(stderr, "file pointer posn in bytes = %@LL@, should be 1000\n\n", offset);
}
#if VERBOSE
if (!mynod)
fprintf(stderr, "preallocating disk space up to 8192 bytes\n");
#endif
errcode = MPI_File_preallocate(fh, 8192);
if (errcode != MPI_SUCCESS) {
handle_error(errcode, "MPI_File_Preallocate");
}
#if VERBOSE
if (!mynod)
fprintf(stderr, "closing the file and deleting it\n");
#endif
MPI_File_close(&fh);
MPI_Barrier(MPI_COMM_WORLD);
if (!mynod)
MPI_File_delete(filename, MPI_INFO_NULL);
MPI_Allreduce(&errs, &toterrs, 1, MPI_INT, MPI_SUM, MPI_COMM_WORLD);
if (mynod == 0) {
if (toterrs > 0) {
fprintf(stderr, "Found %d errors\n", toterrs);
} else {
fprintf(stdout, " No Errors\n");
}
}
MPI_Type_free(&newtype);
MPI_Type_free(&filetype);
MPI_Group_free(&group);
free(filename);
MPI_Finalize();
return 0;
}
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