PetscOptionsPushGetViewerOff#

sets if a PetscOptionsGetViewer() returns a viewer.

Synopsis#

Logically Collective

Input Parameter#

Note#

Calling XXXViewFromOptions in an inner loop can be expensive. This can appear, for example, when using many small subsolves. Call this function to control viewer creation in PetscOptionsGetViewer(), thus removing the expensive XXXViewFromOptions calls.

Developer Notes; Instead of using this approach, the calls to PetscOptionsGetViewer() can be moved into XXXSetFromOptions()

See Also#

Viewers: Looking at PETSc Objects, PetscOptionsGetViewer(), PetscOptionsPopGetViewerOff()

Level#

developer

Location#

src/sys/classes/viewer/interface/viewreg.c


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Index of all Viewer routines
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Index of all manual pages