# PCFieldSplitSetGKBMaxit
Sets the maximum number of iterations for the generalized Golub-Kahan bidiagonalization preconditioner in `PCFIELDSPLIT` 
## Synopsis
```
#include "petscpc.h" 
PetscErrorCode PCFieldSplitSetGKBMaxit(PC pc, PetscInt maxit)
```
Collective


## Input Parameters

- ***pc     -*** the preconditioner context
- ***maxit  -*** the maximum number of iterations



## Options Database Key

- ***-pc_fieldsplit_gkb_maxit -*** default is 100





## See Also
 [](sec_block_matrices), `PC`, `PCFIELDSPLIT`, `PCFieldSplitSetGKBDelay()`, `PCFieldSplitSetGKBTol()`, `PCFieldSplitSetGKBNu()`

## Level
intermediate

## Location
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/ksp/pc/impls/fieldsplit/fieldsplit.c.html#PCFieldSplitSetGKBMaxit">src/ksp/pc/impls/fieldsplit/fieldsplit.c</A>

## Implementations

<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/ksp/pc/impls/fieldsplit/fieldsplit.c.html#PCFieldSplitSetGKBMaxit_FieldSplit">PCFieldSplitSetGKBMaxit_FieldSplit in src/ksp/pc/impls/fieldsplit/fieldsplit.c</A><BR>


---
[Edit on GitLab](https://gitlab.com/petsc/petsc/-/edit/release/src/ksp/pc/impls/fieldsplit/fieldsplit.c)


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