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HPL_grid_info(3)             HPL Library Functions            HPL_grid_info(3)

NAME
       HPL_grid_info - Retrieve grid information.

SYNOPSIS
       #include "hpl.h"

       int HPL_grid_info( const HPL_T_grid * GRID, int * NPROW, int * NPCOL,
       int * MYROW, int * MYCOL );

DESCRIPTION
       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.

ARGUMENTS
       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.

SEE ALSO
       HPL_pnum (3), HPL_grid_init (3), HPL_grid_exit (3).

HPL 2.1                        October 26, 2012               HPL_grid_info(3)