DragonFly On-Line Manual Pages
HPL_grid_info(3) HPL Library Functions HPL_grid_info(3)
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
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
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
HPL_pnum (3), HPL_grid_init (3), HPL_grid_exit (3).
HPL 2.1 October 26, 2012 HPL_grid_info(3)