pddrive3_ABglobal.c File Reference

Driver program for pdgssvx_ABglobal example. More...

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

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Functions
int	main (int argc, char *argv[])
int	cpp_defs ()

Detailed Description

Driver program for pdgssvx_ABglobal example.

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 4.1) --
Lawrence Berkeley National Lab, Univ. of California Berkeley.
September 1, 1999
April 5, 2015

Function Documentation

cpp_defs()

int cpp_defs

(

)

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main()

int main	(	int	argc,
		char *	argv[]
	)

Purpose
=======

The driver program pddrive3A_ABglobal.

This example illustrates how to use pdgssvx_ABglobal to solve
systems repeatedly with the same sparsity pattern and similar
numerical values of matrix A.
In this case, the column permutation vector and symbolic factorization are
computed only once. The following data structures will be reused in the
subsequent call to pdgssvx_ABglobal:
       ScalePermstruct : DiagScale, R, C, perm_r, perm_c
       LUstruct        : etree, Glu_persist, Llu

NOTE:
The distributed nonzero structures of L and U remain the same,
although the numerical values are different. So 'Llu' is set up once
in the first call to pdgssvx_ABglobal, and reused in the subsequent call.

On an IBM SP, the program may be run by typing:
   poe pddrive3_ABglobal -r <proc rows> -c <proc columns> <input_matrix>  -procs 

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