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# KSPGuessType
String with the name of a PETSc initial guess approach for Krylov methods. 
## Synopsis
```
typedef const char *KSPGuessType;
#define KSPGUESSFISCHER "fischer"
#define KSPGUESSPOD     "pod"

```

## Values
+ `KSPGUESSFISCHER` - methodology developed by Paul Fischer
- `KSPGUESSPOD` - methodology based on proper orthogonal decomposition




## See Also
 [](ch_ksp), `KSP`, `KSPGuess`

## Level
intermediate

## Location
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/include/petscksp.h.html#KSPGuessType">include/petscksp.h</A>


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[Edit on GitLab](https://gitlab.com/petsc/petsc/-/edit/release/include/petscksp.h)


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