

 
Manual Reference Pages  HPL_NUMROCI (3)
NAME
HPL_numrocI  Compute the local number of row/columns.
CONTENTS
Synopsis
Description
Arguments
See Also
SYNOPSIS
#include "hpl.h"
int
HPL_numrocI(
const int
N,
const int
I,
const int
INB,
const int
NB,
const int
PROC,
const int
SRCPROC,
const int
NPROCS
);
DESCRIPTION
HPL_numrocI
returns the local number of matrix rows/columns process
PROC will get if we give out N rows/columns starting from global
index I.
ARGUMENTS
N (input) const int
 
On entry, N specifies the number of rows/columns being dealt
out. N must be at least zero.

I (input) const int
 
On entry, I specifies the global index of the matrix entry
I must be at least zero.

INB (input) const int
 
On entry, INB specifies the size of the first block of th
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 A. NB must be larger than one.

PROC (input) const int
 
On entry, PROC specifies the coordinate of the process whos
local portion is determined. PROC must be at least zero an
strictly less than NPROCS.

SRCPROC (input) const int
 
On entry, SRCPROC specifies the coordinate of the proces
that possesses the first row or column of the matrix. SRCPRO
must be at least zero and strictly less than NPROCS.

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


SEE ALSO
HPL_indxg2l (3),
HPL_indxg2lp (3),
HPL_indxg2p (3),
HPL_indxl2g (3),
HPL_numroc (3).
HPL 2.1  HPL_NUMROCI (3)  October 26, 2012 
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