petsc-3.12.4 2020-02-04
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# MatSetValuesBatch

Adds (ADD_VALUES) many blocks of values into a matrix at once. The blocks must all be square and the same size. Currently, this can only be called once and creates the given matrix.

### Synopsis

    #include "petscmat.h"
    PetscErrorCode MatSetValuesBatch(Mat mat, PetscInt nb, PetscInt bs, PetscInt rows[], const PetscScalar v[])

Not Collective

### Input Parameters

| mat | - the matrix
| nb | - the number of blocks
| bs | - the number of rows (and columns) in each block
| rows | - a concatenation of the rows for each block
| v | - a concatenation of logically two-dimensional arrays of values

### Notes

In the future, we will extend this routine to handle rectangular blocks, and to allow multiple calls for a given matrix.

### See Also

MatSetOption(), MatAssemblyBegin(), MatAssemblyEnd(), MatSetValuesBlocked(), MatSetValuesLocal(),
InsertMode, INSERT_VALUES, ADD_VALUES, MatSetValues()

### Level

advanced

### Location

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