slepc-main 2024-11-15
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LMEMonitorSet

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

Synopsis

#include "slepclme.h" 
PetscErrorCode LMEMonitorSet(LME lme,PetscErrorCode (*monitor)(LME lme,PetscInt its,PetscReal errest,void*mctx),void *mctx,PetscCtxDestroyFn *monitordestroy)
Logically Collective

Input Parameters

lme  - linear matrix equation solver context obtained from LMECreate()
monitor  - pointer to function (if this is NULL, it turns off monitoring)
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

Calling sequence of monitor

 PetscErrorCode monitor(LME lme,PetscInt its,PetscReal errest,void*mctx)
lme  - linear matrix equation solver context obtained from LMECreate()
its  - iteration number
errest  - error estimate
mctx  - optional monitoring context, as set by LMEMonitorSet()

Options Database Keys

-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.

Notes

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

See Also

LMEMonitorCancel()

Level

intermediate

Location

src/lme/interface/lmemon.c

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