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Algebraic multigrid preconditioning of the Hessian in optimization constrained by a partial differential equation

Journal Article · · Numerical Linear Algebra with Applications
DOI:https://doi.org/10.1002/nla.2333· OSTI ID:1786516
 [1];  [2]
  1. Center for Applied Scientific Computing Lawrence Livermore National Laboratory Livermore California USA
  2. University of Maryland, Baltimore County Baltimore Maryland USA

Summary

We construct an algebraic multigrid (AMG) based preconditioner for the reduced Hessian of a linear‐quadratic optimization problem constrained by an elliptic partial differential equation. While the preconditioner generalizes a geometric multigrid preconditioner introduced in earlier works, its construction relies entirely on a standard AMG infrastructure built for solving the forward elliptic equation, thus allowing for it to be implemented using a variety of AMG methods and standard packages. Our analysis establishes a clear connection between the quality of the preconditioner and the AMG method used. The proposed strategy has a broad and robust applicability to problems with unstructured grids, complex geometry, and varying coefficients. The method is implemented using the Hypre package and several numerical examples are presented.

Sponsoring Organization:
USDOE
Grant/Contract Number:
SC0005455; AC52-07NA27344
OSTI ID:
1786516
Journal Information:
Numerical Linear Algebra with Applications, Journal Name: Numerical Linear Algebra with Applications Journal Issue: 1 Vol. 28; ISSN 1070-5325
Publisher:
Wiley Blackwell (John Wiley & Sons)Copyright Statement
Country of Publication:
United Kingdom
Language:
English

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