MatLMVMSetHistorySize#

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

Synopsis#

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

Input Parameters#

  • B - A MATLMVM matrix

  • hist_size - number of past iterates (default 5)

Options Database Key#

  • -mat_lmvm_hist_size - set number of past iterates

See Also#

KSP: Linear System Solvers, LMVM Matrices, MATLMVM, MatLMVMGetUpdateCount()

Level#

beginner

Location#

src/ksp/ksp/utils/lmvm/lmvmutils.c

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Index of all manual pages