LMEMonitorSet#

Sets an ADDITIONAL function to be called at every iteration to monitor convergence.

Synopsis#

#include "slepclme.h" 
PetscErrorCode LMEMonitorSet(LME lme,LMEMonitorFn *monitor,void *mctx,PetscCtxDestroyFn *monitordestroy)

Logically Collective

lme - linear matrix equation solver context obtained from LMECreate()
monitor - pointer to function (if this is NULL, it turns off monitoring), see LMEMonitorFn
mctx - [optional] context for private data for the monitor routine (use NULL if no context is desired)
monitordestroy - [optional] routine that frees monitor context (may be NULL), see PetscCtxDestroyFn for the calling sequence

-lme_monitor - print the error estimate
-lme_monitor draw::draw_lg - sets line graph monitor for the error estimate
-lme_monitor_cancel - cancels all monitors that have been hardwired into a code by calls to LMEMonitorSet(), but does not cancel those set via the options database.

The options database option -lme_monitor and related options are the easiest way to turn on LME iteration monitoring.

LMEMonitorRegister() provides a way to associate an options database key with LME monitor function.

Several different monitoring routines may be set by calling LMEMonitorSet() multiple times; all will be called in the order in which they were set.

intermediate