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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 2.3			       December	2, 2018		      HPL_grid_info(3)

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