LUFactFlops(3P) Sun Performance Library LUFactFlops(3P)NAMELUFactFlops - A query function that returns the floating point opera‐
tion count of the factorization step of the SuperLU solver.
SYNOPSIS
#include <sunperf.h>
float LUFactFlops(SuperLUStat_t *stat);
float LUFactFlops_64(SuperLUStat_t_64 *stat);
PURPOSE
LUFactFlops[_64] returns the floating point operation count in the fac‐
torization step of the SuperLU solver. This information is collected
and stored in a structure 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
LUFactFlops[_64] returns the single precision floating point value in array
ops that represents the number of floating point operations performed in thefactorization 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
LUFactTime
LUSolveTime
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 LUFactFlops(3P)
