#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. | |
| VEC_SUBSET_OFF_PROC_ENTRIES, which causes VecAssemblyBegin() to assume that the off | - process entries will always be a subset (possibly equal) of the off-process entries set on the first assembly. This reuses the communication pattern, thus avoiding a global reduction. Subsequent assemblies setting off-process values should use the same InsertMode as the first assembly. |
Level:intermediate
Location:src/vec/vec/interface/vector.c
Index of all Vec routines
Table of Contents for all manual pages
Index of all manual pages