:orphan:
# SNESMonitor
runs the user provided monitor routines, if they exist 
## Synopsis
```
#include "petscsnes.h"  
PetscErrorCode SNESMonitor(SNES snes, PetscInt iter, PetscReal rnorm)
```
Collective


## Input Parameters

- ***snes -*** nonlinear solver context obtained from `SNESCreate()`
- ***iter -*** iteration number
- ***rnorm -*** relative norm of the residual





## Note
This routine is called by the `SNES` implementations.
It does not typically need to be called by the user.


## See Also
 [](ch_snes), `SNES`, `SNESMonitorSet()`

## Level
developer

## Location
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/snes/interface/snes.c.html#SNESMonitor">src/snes/interface/snes.c</A>


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[Edit on GitLab](https://gitlab.com/petsc/petsc/-/edit/release/src/snes/interface/snes.c)


[Index of all SNES routines](index.md)  
[Table of Contents for all manual pages](/manualpages/index.md)  
[Index of all manual pages](/manualpages/singleindex.md)