

 
Manual Reference Pages  HPL_INDXG2L (3)
NAME
HPL_indxg2l  Map a global index into a local one.
CONTENTS
Synopsis
Description
Arguments
See Also
SYNOPSIS
#include "hpl.h"
int
HPL_indxg2l(
const int
IG,
const int
INB,
const int
NB,
const int
SRCPROC,
const int
NPROCS
);
DESCRIPTION
HPL_indxg2l
computes the local index of a matrix entry pointed to by
the global index IG. This local returned index is the same in all
processes.
ARGUMENTS
IG (input) const int
 
On entry, IG specifies the global index of the matrix entry.
IG must be at least zero.

INB (input) const int
 
On entry, INB specifies the size of the first block of the
global matrix. INB must be at least one.

NB (input) const int
 
On entry, NB specifies the blocking factor used to partition
and distribute the matrix. NB must be larger than one.

SRCPROC (input) const int
 
On entry, if SRCPROC = 1, the data is not distributed but
replicated, in which case this routine returns IG in all
processes. Otherwise, the value of SRCPROC is ignored.

NPROCS (input) const int
 
On entry, NPROCS specifies the total number of process rows
or columns over which the matrix is distributed. NPROCS must
be at least one.


SEE ALSO
HPL_indxg2lp (3),
HPL_indxg2p (3),
HPL_indxl2g (3),
HPL_numroc (3),
HPL_numrocI (3).
HPL 2.1  HPL_INDXG2L (3)  October 26, 2012 
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