PETSc version 3.17.4
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# PCSPAISetCacheSize

specify cache size in the SPAI preconditioner

### Synopsis

    #include "petscpc.h"
    PetscErrorCode  PCSPAISetCacheSize(PC pc,int cache_size)

### Input Parameters

| pc | - the preconditioner
| n | - cache size {0,1,2,3,4,5} (default 5)

### Notes

SPAI uses a hash table to cache messages and avoid redundant communication. If suggest always using 5. This parameter is irrelevant in the serial version.

### See Also

PCSPAI, PCSetType()

### Level

intermediate

### Location

src/ksp/pc/impls/spai/ispai.c

### Implementations

PCSPAISetCacheSize_SPAI in src/ksp/pc/impls/spai/ispai.c
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