KSPCreateOperatorsFn

A prototype of a KSP operator creation function that would be passed to DMKSPSetCreateOperators()

Synopsis

PETSC_EXTERN_TYPEDEF typedef PetscErrorCode KSPCreateOperatorsFn(KSP ksp, Mat *A, Mat *P, PetscCtx ctx);

Calling Sequence

• ksp - KSP context

• A - the created operator that defines the linear system

• P - the created operator from which to build the preconditioner, often the same as A

• ctx - [optional] user-defined function context

Notes

The returned matrices are owned by the caller, similar to DMCreateMatrix().

A and P may be the same object. In such a case, users do not need to increase the reference count of A. If P is not returned, then we assume it is the same of A.

See Also

KSP: Linear System Solvers, DMKSPSetCreateOperators(), DMKSPGetCreateOperators(), KSPComputeOperatorsFn, KSPSetOperators()

Level

developer

Location

include/petscksp.h

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Index of all KSP routines
Table of Contents for all manual pages
Index of all manual pages