SuperLU_DIST  4.0
superlu_dist on CPU and GPU clusters
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pzdrive3.c File Reference

Driver program for PZGSSVX example. More...

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

Functions

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

Detailed Description

Driver program for PZGSSVX example.

– Distributed SuperLU routine (version 2.0) –
Lawrence Berkeley National Lab, Univ. of California Berkeley.
March 15, 2003

Function Documentation

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

Purpose

The driver program PZDRIVE3.
This example illustrates how to use PZGSSVX 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 PZGSSVX:
       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 PZGSSVX, and reused in the subsequent call.
On an IBM SP, the program may be run by typing:
   poe pzdrive3 -r <proc rows>=""> -c <proc columns>=""> <input_matrix> -procs