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() or ISLocalToGlobalMappingCreateIS()

• 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

src/mat/interface/matrix.c

Examples

src/snes/tutorials/ex48.c
src/ksp/ksp/tutorials/ex85.c
src/tao/bound/tutorials/plate2.c

Implementations

MatSetLocalToGlobalMapping_IS() in src/mat/impls/is/matis.c

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Index of all manual pages