petsc-3.7.1 2016-05-15
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MatSetValuesBlockedLocal

Inserts or adds values into certain locations of a matrix, using a local ordering of the nodes a block at a time.

Synopsis

#include "petscmat.h" 
PetscErrorCode MatSetValuesBlockedLocal(Mat mat,PetscInt nrow,const PetscInt irow[],PetscInt ncol,const PetscInt icol[],const PetscScalar y[],InsertMode addv)
Not Collective Many br

Input Parameters

x - the matrix Many br
nrow, irow - number of rows and their local indices Many br
ncol, icol - number of columns and their local indices Many br
y - a logically two-dimensional array of values Many br
addv - either INSERT_VALUES or ADD_VALUES, where Many brADD_VALUES adds values to any existing entries, and Many brINSERT_VALUES replaces existing entries with new values Many br

Notes

If you create the matrix yourself (that is not with a call to DMCreateMatrix()) then you MUST call MatXXXXSetPreallocation() or Many brMatSetUp() before using this routine Many br

If you create the matrix yourself (that is not with a call to DMCreateMatrix()) then you MUST call MatSetBlockSize() and MatSetLocalToGlobalMapping() Many brbefore using this routineBefore calling MatSetValuesLocal(), the user must first set the Many br

Calls to MatSetValuesBlockedLocal() with the INSERT_VALUES and ADD_VALUES Many broptions cannot be mixed without intervening calls to the assembly Many brroutines. Many br

These values may be cached, so MatAssemblyBegin() and MatAssemblyEnd() Many brMUST be called after all calls to MatSetValuesBlockedLocal() have been completed. Many br

Many br

See Also

MatSetBlockSize(), MatSetLocalToGlobalMapping(), MatAssemblyBegin(), MatAssemblyEnd(),
MatSetValuesLocal(), MatSetValuesBlocked() Many br

Level:intermediate
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/ts/examples/tutorials/ex14.c.html
src/ts/examples/tutorials/ex22f.F.html
src/ts/examples/tutorials/ex22f_mf.F90.html