spanel_bmod.c File Reference

Performs numeric block updates. More...

#include <stdio.h>
#include <stdlib.h>
#include "slu_sdefs.h"

Include dependency graph for spanel_bmod.c:

Functions
void	slsolve (int, int, float *, float *)
	Solves a dense UNIT lower triangular system. More...
void	smatvec (int, int, int, float *, float *, float *)
	Performs a dense matrix-vector multiply: Mxvec = Mxvec + M * vec. More...
void	scheck_tempv ()
void	spanel_bmod (const int m, const int w, const int jcol, const int nseg, float *dense, float *tempv, int *segrep, int *repfnz, GlobalLU_t *Glu, SuperLUStat_t *stat)

Detailed Description

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.

– SuperLU routine (version 3.0) –
Univ. of California Berkeley, Xerox Palo Alto Research Center,
and Lawrence Berkeley National Lab.
October 15, 2003

Copyright (c) 1994 by Xerox Corporation.  All rights reserved.

THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY
EXPRESSED OR IMPLIED.  ANY USE IS AT YOUR OWN RISK.

Permission is hereby granted to use or copy this program for any
purpose, provided the above notices are retained on all copies.
Permission to modify the code and to distribute modified code is
granted, provided the above notices are retained, and a notice that
the code was modified is included with the above copyright notice.

Function Documentation

void scheck_tempv

(

)

void slsolve	(	int	ldm,
		int	ncol,
		float *	M,
		float *	rhs
	)

The unit lower triangular matrix is stored in a 2D array M(1:nrow,1:ncol). The solution will be returned in the rhs vector.

void smatvec	(	int	ldm,
		int	nrow,
		int	ncol,
		float *	M,
		float *	vec,
		float *	Mxvec
	)

The input matrix is M(1:nrow,1:ncol); The product is returned in Mxvec[].

void spanel_bmod	(	const int	m,
		const int	w,
		const int	jcol,
		const int	nseg,
		float *	dense,
		float *	tempv,
		int *	segrep,
		int *	repfnz,
		GlobalLU_t *	Glu,
		SuperLUStat_t *	stat
	)

Purpose

   Performs numeric block updates (sup-panel) in topological order.
   It features: col-col, 2cols-col, 3cols-col, and sup-col updates.
   Special processing on the supernodal portion of L[*,j]

   Before entering this routine, the original nonzeros in the panel 
   were already copied into the spa[m,w].

   Updated/Output parameters-
   dense[0:m-1,w]: L[*,j:j+w-1] and U[*,j:j+w-1] are returned 
   collectively in the m-by-w vector dense[*]. 

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