petsc-3.8.4 2018-03-24

SNESGetConvergenceHistory

Gets the array used to hold the convergence history.

Synopsis

#include "petscsnes.h"  
PetscErrorCode  SNESGetConvergenceHistory(SNES snes,PetscReal *a[],PetscInt *its[],PetscInt *na)

Not Collective

Input Parameter

snes -iterative context obtained from SNESCreate()

Output Parameters

a -array to hold history

its -integer array holds the number of linear iterations (or negative if not converged) for each solve.

na -size of a and its

Notes

The calling sequence for this routine in Fortran is

  call SNESGetConvergenceHistory(SNES snes, integer na, integer ierr)

This routine is useful, e.g., when running a code for purposes of accurate performance monitoring, when no I/O should be done during the section of code that is being timed.

Keywords