#include "petscvec.h" PetscErrorCode VecSetOption(Vec x,VecOption op,PetscBool flag)Collective on Vec
| x | - the vector | |
| op | - the option | |
| flag | - turn the option on or off |
| VEC_IGNORE_OFF_PROC_ENTRIES, which causes VecSetValues() to ignore | - entries destined to be stored on a separate processor. This can be used to eliminate the global reduction in the VecAssemblyXXXX() if you know that you have only used VecSetValues() to set local elements | |
| VEC_IGNORE_NEGATIVE_INDICES, which means you can pass negative indices | - in ix in calls to VecSetValues() or VecGetValues(). These rows are simply ignored. |