PETSc version 3.17.0
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# KSPGMRESCGSRefinementType

How the classical (unmodified) Gram-Schmidt is performed.

### Synopsis

    typedef enum {KSP_GMRES_CGS_REFINE_NEVER, KSP_GMRES_CGS_REFINE_IFNEEDED, KSP_GMRES_CGS_REFINE_ALWAYS} KSPGMRESCGSRefinementType;

### See Also

KSPGMRESClassicalGramSchmidtOrthogonalization(), KSPGMRESSetOrthogonalization(), KSPGMRESGetOrthogonalization(),
KSPGMRESSetCGSRefinementType(), KSPGMRESGetCGSRefinementType(), KSPGMRESModifiedGramSchmidtOrthogonalization()

### Level

advanced

### Location

src/ksp/ksp/guess/../../../../include/petscksp.h
Index of all KSP routines
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Index of all manual pages