LUFactTime(3P) Sun Performance Library LUFactTime(3P)NAMELUFactTime - A query function that returns the time spent in the fac‐
torization step by the SuperLU solver.
SYNOPSIS
#include <sunperf.h>
double LUFactTime(SuperLUStat_t *stat);
double LUFactTime_64(SuperLUStat_t_64 *stat);
PURPOSE
LUFactTime[_64] returns the time spent in the factorization step by the
SuperLU solver. This information is collected and stored in a struc‐
ture object of type SuperLUStat_t[_64]:
typedef struct {
int *panel_histo;
double *utime;
float *ops;
int TinyPivots;
int RefineSteps;
} SuperLUStat_t;
typedef struct {
long *panel_histo;
double *utime;
float *ops;
long TinyPivots;
long RefineSteps;
} SuperLUStat_t_64;
where
panel_histo is histogram of panel size distribution
utime is running time at various phases
ops is operation count at various phases
TinyPivots is number of tiny pivots
RefineSteps is number of iterative refinement steps
LUFactTime[_64] returns the double precision value in utime that represents
the time spent in the factorization step.ARGUMENTS
SuperLUStat_t[_64] *stat (input)
On entry, stat points to a SuperLUStat_t[_64] structure.
COPYRIGHT
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)
SEE ALSO
StatInit
StatFree
LUSolveTime
LUFactFlops
LUSolveFlops
SuperMatrix
http://crd.lbl.gov/~xiaoye/SuperLU/
James W. Demmel, Stanley C. Eisenstat, John R. Gilbert, Xiaoye S. Li
and Joseph W. H. Liu, "A supernodal approach to sparse partial pivot‐
ing", SIAM J. Matrix Analysis and Applications, Vol. 20, Num. 3, 1999,
pp. 720-755.
6 Mar 2009 LUFactTime(3P)
