SNESMonitorResidual#

Monitors progress of the SNES solvers by calling VecView() for the residual at each iteration.

Synopsis#

#include "petsc/private/snesimpl.h"   
PetscErrorCode SNESMonitorResidual(SNES snes, PetscInt its, PetscReal fgnorm, PetscViewerAndFormat *vf)

Collective

Input Parameters#

  • snes - the SNES context

  • its - iteration number

  • fgnorm - 2-norm of residual

  • dummy - a viewer

Options Database Key#

  • -snes_monitor_residual [ascii binary draw][:filename][:viewer format] - plots residual (not its norm) at each iteration

Note#

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.

See Also#

SNES: Nonlinear Solvers, SNES, SNESMonitorSet(), SNESMonitorDefault(), VecView(), SNESMonitor()

Level#

intermediate

Location#

src/snes/interface/snesut.c

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Index of all SNES routines
Table of Contents for all manual pages
Index of all manual pages