void mpi_file_get_group_(MPI_Fint *fh, MPI_Fint *group, MPI_Fint *ierr )
{
MPI_File fh_c;
MPI_Group group_c;
fh_c = MPI_File_f2c(*fh);
*ierr = MPI_File_get_group(fh_c, &group_c);
*group = MPI_Group_c2f(group_c);
}
void mpi_file_get_group_f(MPI_Fint *fh, MPI_Fint *group, MPI_Fint *ierr)
{
MPI_File c_fh = MPI_File_f2c(*fh);
MPI_Group c_grp;
*ierr = OMPI_INT_2_FINT(MPI_File_get_group(c_fh, &c_grp));
if (MPI_SUCCESS == OMPI_FINT_2_INT(*ierr)) {
*group = MPI_Group_c2f(c_grp);
}
}
void ompi_file_get_group_f(MPI_Fint *fh, MPI_Fint *group, MPI_Fint *ierr)
{
int c_ierr;
MPI_File c_fh = MPI_File_f2c(*fh);
MPI_Group c_grp;
c_ierr = MPI_File_get_group(c_fh, &c_grp);
if (NULL != ierr) *ierr = OMPI_INT_2_FINT(c_ierr);
if (MPI_SUCCESS == c_ierr) {
*group = MPI_Group_c2f(c_grp);
}
}
int c2ffile_ ( int *file )
{
MPI_File cFile = MPI_File_f2c( *file );
MPI_Group group, wgroup;
int result;
MPI_File_get_group( cFile, &group );
MPI_Comm_group( MPI_COMM_WORLD, &wgroup );
MPI_Group_compare( group, wgroup, &result );
if (result != MPI_IDENT) {
fprintf( stderr, "File: did not get expected group\n" );
return 1;
}
MPI_Group_free( &group );
MPI_Group_free( &wgroup );
return 0;
}
int main(int argc, char **argv)
{
int buf[1024], amode, flag, mynod, len, i;
MPI_File fh;
MPI_Status status;
MPI_Datatype newtype;
MPI_Offset disp, offset;
MPI_Group group;
MPI_Datatype etype, filetype;
char datarep[25], *filename;
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) {
printf("\n*# Usage: misc <mpiparameter> -- -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);
}
MPI_File_open(MPI_COMM_WORLD, filename, MPI_MODE_CREATE | MPI_MODE_RDWR,
MPI_INFO_NULL, &fh);
MPI_File_write(fh, buf, 1024, MPI_INT, &status);
MPI_File_sync(fh);
MPI_File_get_amode(fh, &amode);
if (!mynod) printf("testing MPI_File_get_amode\n");
if (amode != (MPI_MODE_CREATE | MPI_MODE_RDWR))
printf("amode is %d, should be %d\n\n", amode, MPI_MODE_CREATE |
MPI_MODE_RDWR);
MPI_File_get_atomicity(fh, &flag);
if (flag) printf("atomicity is %d, should be 0\n", flag);
if (!mynod) printf("setting atomic mode\n");
MPI_File_set_atomicity(fh, 1);
MPI_File_get_atomicity(fh, &flag);
if (!flag) printf("atomicity is %d, should be 1\n", flag);
MPI_File_set_atomicity(fh, 0);
if (!mynod) printf("reverting back to nonatomic mode\n");
MPI_Type_vector(10, 10, 20, MPI_INT, &newtype);
MPI_Type_commit(&newtype);
MPI_File_set_view(fh, 1000, MPI_INT, newtype, "native", MPI_INFO_NULL);
if (!mynod) printf("testing MPI_File_get_view\n");
MPI_File_get_view(fh, &disp, &etype, &filetype, datarep);
if ((disp != 1000) || strcmp(datarep, "native"))
printf("disp = %I64, datarep = %s, should be 1000, native\n\n", disp, datarep);
if (!mynod) printf("testing MPI_File_get_byte_offset\n");
MPI_File_get_byte_offset(fh, 10, &disp);
if (disp != (1000+20*sizeof(int))) printf("byte offset = %I64, should be %d\n\n", disp, (int) (1000+20*sizeof(int)));
MPI_File_get_group(fh, &group);
if (!mynod) printf("testing MPI_File_set_size\n");
MPI_File_set_size(fh, 1000+15*sizeof(int));
MPI_Barrier(MPI_COMM_WORLD);
MPI_File_sync(fh);
MPI_File_get_size(fh, &disp);
if (disp != 1000+15*sizeof(int)) printf("file size = %I64, should be %d\n\n", disp, (int) (1000+15*sizeof(int)));
if (!mynod) printf("seeking to eof and testing MPI_File_get_position\n");
MPI_File_seek(fh, 0, MPI_SEEK_END);
MPI_File_get_position(fh, &disp);
if (disp != 10) printf("file pointer posn = %I64, should be 10\n\n", disp);
if (!mynod) printf("testing MPI_File_get_byte_offset\n");
MPI_File_get_byte_offset(fh, disp, &offset);
if (offset != (1000+20*sizeof(int))) printf("byte offset = %I64, should be %d\n\n", offset, (int) (1000+20*sizeof(int)));
MPI_Barrier(MPI_COMM_WORLD);
if (!mynod) printf("testing MPI_File_seek with MPI_SEEK_CUR\n");
MPI_File_seek(fh, -10, MPI_SEEK_CUR);
MPI_File_get_position(fh, &disp);
MPI_File_get_byte_offset(fh, disp, &offset);
if (offset != 1000)
printf("file pointer posn in bytes = %I64, should be 1000\n\n", offset);
if (!mynod) printf("preallocating disk space up to 8192 bytes\n");
MPI_File_preallocate(fh, 8192);
if (!mynod) printf("closing the file and deleting it\n");
MPI_File_close(&fh);
MPI_Barrier(MPI_COMM_WORLD);
if (!mynod) MPI_File_delete(filename, MPI_INFO_NULL);
MPI_Type_free(&newtype);
MPI_Type_free(&filetype);
MPI_Group_free(&group);
free(filename);
MPI_Finalize();
return 0;
}