#include <math.h>
#include "superlu_ddefs.h"
Functions/Subroutines | |
int | main (int argc, char *argv[]) |
int | cpp_defs () |
-- Distributed SuperLU routine (version 2.0) -- Lawrence Berkeley National Lab, Univ. of California Berkeley. March 15, 2003
int cpp_defs | ( | ) |
int main | ( | int | argc, | |
char * | argv[] | |||
) |
Purpose =======
The driver program PDDRIVE3.
This example illustrates how to use PDGSSVX 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: 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, and reused in the subsequent call.
On an IBM SP, the program may be run by typing: poe pddrive3 -r <proc rows>=""> -c <proc columns>=""> <input_matrix> -procs