petsc-3.14.6 2021-03-30

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MatLMVMSetHistorySize

Set the number of past iterates to be stored for the construction of the limited-memory QN update.

Synopsis

#include "petscksp.h" 
PetscErrorCode MatLMVMSetHistorySize(Mat B, PetscInt hist_size)

Input Parameters

	B	- An LMVM-type matrix
	hist_size	- number of past iterates (default 5)

Options Database

-mat_lmvm_hist_size <m>

See Also

MatLMVMGetUpdateCount()

Level

beginner

Location

src/ksp/ksp/utils/lmvm/lmvmutils.c
Index of all KSP routines
Table of Contents for all manual pages
Index of all manual pages