KSPSetResidualHistory

Sets the array used to hold the residual history. If set, this array will contain the residual norms computed at each iteration of the solver.

Synopsis

#include "petscksp.h" 
int KSPSetResidualHistory(KSP ksp,PetscReal *a,int na,PetscTruth reset)
Not Collective

Input Parameters

ksp - iterative context obtained from KSPCreate()
a - array to hold history
na - size of a
reset - PETSC_TRUE indicates the history counter is reset to zero for each new linear solve

Notes: The array is NOT freed by PETSc so the user needs to keep track of it and destroy once the KSP object is destroyed.

Keywords

KSP, set, residual, history, norm

See Also

KSPGetResidualHistory()

Level:advanced
Location:
src/sles/ksp/interface/itfunc.c
Index of all KSP routines
Table of Contents for all manual pages
Index of all manual pages

Examples

src/snes/examples/tutorials/ex6.c.html