HPL_grid_info man page
HPL_grid_info — Retrieve grid information.
int HPL_grid_info( const HPL_T_grid * GRID, int * NPROW, int * NPCOL, int * MYROW, int * MYCOL );
HPL_grid_info returns the grid shape and the coordinates in the grid of the calling process. Successful completion is indicated by the returned error code MPI_SUCCESS. Other error codes depend on the MPI implementation.
- GRID (local input) const HPL_T_grid *
On entry, GRID points to the data structure containing the process grid information.
- NPROW (global output) int *
On exit, NPROW specifies the number of process rows in the grid. NPROW is at least one.
- NPCOL (global output) int *
On exit, NPCOL specifies the number of process columns in the grid. NPCOL is at least one.
- MYROW (global output) int *
On exit, MYROW specifies my row process coordinate in the grid. MYROW is greater than or equal to zero and less than NPROW.
- MYCOL (global output) int *
On exit, MYCOL specifies my column process coordinate in the grid. MYCOL is greater than or equal to zero and less than NPCOL.
HPL_pnum (3), HPL_grid_init (3), HPL_grid_exit (3).