7 /* Test reading and writing zero bytes (set status correctly) */
9 int main( int argc, char *argv[] )
21 MPI_Init( &argc, &argv );
23 comm = MPI_COMM_WORLD;
24 MPI_File_open( comm, (char*)"/scratch/testfile", MPI_MODE_RDWR | MPI_MODE_CREATE | MPI_MODE_DELETE_ON_CLOSE, MPI_INFO_NULL, &fh );
25 MPI_Comm_size( comm, &size );
26 MPI_Comm_rank( comm, &rank );
27 buf = (int *)malloc( 10* sizeof(int) );
31 MPI_File_write_ordered( fh, buf, 10, MPI_INT, &status );
32 MPI_Get_count( &status, MPI_INT, &count );
35 fprintf( stderr, "Wrong count (%d) on write-ordered\n", count );fflush(stderr);
38 MPI_File_seek_shared( fh, 0, MPI_SEEK_SET );
39 for (i=0; i<size; i++) buf[i] = -1;
40 MPI_File_read_ordered( fh, buf, 10, MPI_INT, &status );
43 MPI_File_seek_shared( fh, 0, MPI_SEEK_SET );
46 MPI_File_close( &fh );