StatInit(3P) Sun Performance Library StatInit(3P)NAMEStatInit - A utility C function that allocates and initializes vari‐
ables in structure that stores performance statistics collected during
the computation of the SuperLU solver.
SYNOPSIS
#include <sunperf.h>
void StatInit(SuperLUStat_t *stat);
void StatInit_64(SuperLUStat_t_64 *stat);
PURPOSE
Most of the computational routines use a structure to record certain
kinds of performance data, namely the time and number of floating point
operations in each phase of the computation, and data about the size of
the matrices L and U. These statistics are collected during the compu‐
tation and stored in a variable of type SuperLUStat_t:
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
StatInit allocates storage and performs initialization for the fields
panel_histo, utime and ops.
ARGUMENTS
SuperLUStat_t *stat (input/output)
On entry, stat points to a SuperLUStat_t structure. On exit,
memory is allocated and initialized for panel_histo, utime
and ops.
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
StatFree
LUFactTime
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 StatInit(3P)
