MatSNESMFWPSetComputeNormU
Sets whether it computes the ||U|| used by the WP PETSc routine for computing h. With any Krylov solver this need only be computed during the first iteration and kept for later.
Synopsis
#include "snes.h"
int MatSNESMFWPSetComputeNormU(Mat A,PetscTruth flag)
Input Parameters
| A | - the matrix created with MatCreateSNESMF()
|
| flag | - PETSC_TRUE causes it to compute ||U||, PETSC_FALSE uses the previous value
|
Notes
See the manual page for MatCreateSNESMF() for a complete description of the
algorithm used to compute h.
See Also
MatSNESMFSetFunctionError(), MatCreateSNESMF()
Level:advanced
Location:src/snes/mf/wp.c
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