MatSetLocalToGlobalMapping#
Sets a local-to-global numbering for use by the routine MatSetValuesLocal() to allow users to insert matrix entries using a local (per-processor) numbering.
Synopsis#
#include "petscmat.h"
PetscErrorCode MatSetLocalToGlobalMapping(Mat x, ISLocalToGlobalMapping rmapping, ISLocalToGlobalMapping cmapping)
Not Collective
Input Parameters#
x - the matrix
rmapping - row mapping created with
ISLocalToGlobalMappingCreate()orISLocalToGlobalMappingCreateIS()cmapping - column mapping
Note#
If the matrix is obtained with DMCreateMatrix() then this may already have been called on the matrix
See Also#
Matrices, Mat, DM, DMCreateMatrix(), MatGetLocalToGlobalMapping(), MatAssemblyBegin(), MatAssemblyEnd(), MatSetValues(), MatSetValuesLocal(), MatGetValuesLocal()
Level#
intermediate
Location#
Examples#
src/tao/bound/tutorials/plate2.c
src/ksp/ksp/tutorials/ex85.c
src/tao/bound/tutorials/plate2f.F90
src/snes/tutorials/ex48.c
src/ksp/ksp/tutorials/ex71.c
Implementations#
MatSetLocalToGlobalMapping_IS() in src/mat/impls/is/matis.c
Index of all Mat routines
Table of Contents for all manual pages
Index of all manual pages