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Man Pages


Manual Reference Pages  -  HPL_GRID_INFO (3)

NAME

HPL_grid_info - Retrieve grid information.

CONTENTS

Synopsis
Description
Arguments
See Also

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).
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HPL 2.1 HPL_GRID_INFO (3) October 26, 2012

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