SNESMonitorRatio#
Monitors progress of a SNESSolve() by printing the ratio of residual norm at each iteration to the previous.
Synopsis#
#include "petsc/private/snesimpl.h"
PetscErrorCode SNESMonitorRatio(SNES snes, PetscInt its, PetscReal fgnorm, PetscViewerAndFormat *vf)
Collective
Input Parameters#
snes - the
SNEScontextits - iteration number
fgnorm - 2-norm of residual (or gradient)
vf - context of monitor
Options Database Key#
-snes_monitor_ratio - activate this monitor
Notes#
This is not called directly by users, rather one calls SNESMonitorSet(), with this function as an argument, to cause the monitor
to be used during the SNES solve.
Be sure to call SNESMonitorRationSetUp() before using this monitor.
See Also#
SNES: Nonlinear Solvers, SNESMonitorRationSetUp(), SNESMonitorSet(), SNESMonitorSolution(), SNESMonitorDefault(), PetscViewerFormat, PetscViewerAndFormat
Level#
intermediate
Location#
Index of all SNES routines
Table of Contents for all manual pages
Index of all manual pages