PETSc version 3.15.4
MatLMVMUpdate
Adds (XXprev) and (FFprev) updates to an LMVM matrix. The first time the function is called for an LMVM matrix, no update is applied, but the given X and F vectors are stored for use as Xprev and Fprev in the next update.
Synopsis
#include "petscksp.h"
PetscErrorCode MatLMVMUpdate(Mat B, Vec X, Vec F)
If the user has provided another LMVM matrix in place of J0, the J0
matrix is also updated recursively.
Input Parameters
 B   An LMVMtype matrix

 X   Solution vector

 F   Function vector

See Also
MatLMVMReset(), MatLMVMAllocate()
Level
intermediate
Location
src/ksp/ksp/utils/lmvm/lmvmutils.c
Index of all KSP routines
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Index of all manual pages