# TaoSelectSubset

Select the manner in which subsets of variables in a matrix are selected

## Synopsis

    #include "tao.h"
    int TaoSelectSubset( TaoPetscISType type)

## Input Parameter

type -the manner is which subsets are chosen.

## Choice of types

| TaoRedistributeSubset | - When using multiple processors, redistribute the subset of variables over the processors.
| TaoNoRedistributeSubset | - When using multiple processors, keep variables on current processors
| TaoMaskSubset | - Use the full set of variables, and mask the unneeeded ones.

## Note

For use with active set methods in bound constrained optimization such as TRON and GPCG

Level:advanced
Location:src/petsctao/indexset/taois_petsc.c
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