petsc-3.9.4 2018-09-11
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MatMFFDSetPeriod

 Sets how often h is recomputed, by default it is everytime

Synopsis

#include "petscmat.h"   
PetscErrorCode  MatMFFDSetPeriod(Mat mat,PetscInt period)
Logically Collective on Mat

Input Parameters

mat - the matrix free matrix created via MatCreateSNESMF()
period - 1 for everytime, 2 for every second etc

Options Database Keys

Keywords

SNES, matrix-free, parameters

See Also

MatCreateSNESMF(),MatMFFDGetH(),
MatMFFDSetHHistory(), MatMFFDResetHHistory()

Level

advanced

Location

src/mat/impls/mffd/mffd.c

Implementations

MatMFFDSetPeriod_MFFD in src/mat/impls/mffd/mffd.c

Index of all Mat routines
Table of Contents for all manual pages
Index of all manual pages
-mat_mffd_period <period>-