pzgsmv_AXglobal.c File Reference

Performs sparse matrix-vector multiplication. More...

#include <math.h>
#include "superlu_zdefs.h"

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Functions
static void	zcreate_msr_matrix (SuperMatrix *, int_t[], int_t, doublecomplex **, int_t **)
static void	zPrintMSRmatrix (int, doublecomplex[], int_t[], gridinfo_t *)
int	pzgsmv_AXglobal_setup (SuperMatrix *A, Glu_persist_t *Glu_persist, gridinfo_t *grid, int_t *m, int_t *update[], doublecomplex *val[], int_t *bindx[], int_t *mv_sup_to_proc)
int	pzgsmv_AXglobal (int_t m, int_t update[], doublecomplex val[], int_t bindx[], doublecomplex X[], doublecomplex ax[])
int	pzgsmv_AXglobal_abs (int_t m, int_t update[], doublecomplex val[], int_t bindx[], doublecomplex X[], double ax[])

Detailed Description

Performs sparse matrix-vector multiplication.

Copyright (c) 2003, The Regents of the University of California, through Lawrence Berkeley National Laboratory (subject to receipt of any required approvals from U.S. Dept. of Energy)

All rights reserved.

The source code is distributed under BSD license, see the file License.txt at the top-level directory.

-- Distributed SuperLU routine (version 1.0) --
Lawrence Berkeley National Lab, Univ. of California Berkeley.
September 1, 1999

Function Documentation

pzgsmv_AXglobal()

int pzgsmv_AXglobal	(	int_t	m,
		int_t	update[],
		doublecomplex	val[],
		int_t	bindx[],
		doublecomplex	X[],
		doublecomplex	ax[]
	)

Performs sparse matrix-vector multiplication.

val/bindx stores the distributed MSR matrix A
X is global
ax product is distributed the same way as A

pzgsmv_AXglobal_abs()

int pzgsmv_AXglobal_abs	(	int_t	m,
		int_t	update[],
		doublecomplex	val[],
		int_t	bindx[],
		doublecomplex	X[],
		double	ax[]
	)

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pzgsmv_AXglobal_setup()

int pzgsmv_AXglobal_setup	(	SuperMatrix *	A,
		Glu_persist_t *	Glu_persist,
		gridinfo_t *	grid,
		int_t *	m,
		int_t *	update[],
		doublecomplex *	val[],
		int_t *	bindx[],
		int_t *	mv_sup_to_proc
	)

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zcreate_msr_matrix()

static void zcreate_msr_matrix ( SuperMatrix *  A, int_t  update[], int_t  N_update, doublecomplex **  val, int_t **  bindx  )

static

Create the distributed modified sparse row (MSR) matrix: bindx/val.
For a submatrix of size m-by-n, the MSR arrays are as follows:
   bindx[0]      = m + 1
   bindx[0..m]   = pointer to start of each row
   bindx[ks..ke] = column indices of the off-diagonal nonzeros in row k,
                   where, ks = bindx[k], ke = bindx[k+1]-1
   val[k]        = A(k,k), k < m, diagonal elements
   val[m]        = not used
   val[ki]       = A(k, bindx[ki]), where ks <= ki <= ke
Both arrays are of length nnz + 1.

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zPrintMSRmatrix()

static void zPrintMSRmatrix ( int  m, doublecomplex  val[], int_t  bindx[], gridinfo_t *  grid  )

static

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