petsc-dev 2014-07-23
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MatSetStencil

Sets the grid information for setting values into a matrix via MatSetValuesStencil()

Synopsis

#include "petscmat.h" 
PetscErrorCode  MatSetStencil(Mat mat,PetscInt dim,const PetscInt dims[],const PetscInt starts[],PetscInt dof)
Not Collective

Input Parameters

mat - the matrix
dim - dimension of the grid 1, 2, or 3
dims - number of grid points in x, y, and z direction, including ghost points on your processor
starts - starting point of ghost nodes on your processor in x, y, and z direction
dof - number of degrees of freedom per node

Inspired by the structured grid interface to the HYPRE package (www.llnl.gov/CASC/hyper)

For matrices generated with DMCreateMatrix() this routine is automatically called and so not needed by the user.

See Also

MatSetOption(), MatAssemblyBegin(), MatAssemblyEnd(), MatSetValuesBlocked(), MatSetValuesLocal()
MatSetValues(), MatSetValuesBlockedStencil(), MatSetValuesStencil()

Level:beginner
Location:
src/mat/interface/matrix.c
Index of all Mat routines
Table of Contents for all manual pages
Index of all manual pages

Examples

src/snes/examples/tutorials/ex48.c.html