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Full Record Details
DOI
10.5286/raltr.2007021
Persistent URL
http://purl.org/net/epubs/work/42118
Record Status
Checked
Record Id
42118
Title
HSL_MI20 : an efficient AMG preconditioner
Contributors
J Boyle
,
MD Mihajlovic
,
JA Scott (STFC Rutherford Appleton Lab.)
Abstract
Algebraic multigrid (AMG) is an efficient multilevel method for solving large sparse linear systems obtained from the discretisation of scalar eliptic partial differential equations. AMG can be used to compute powerful preconditioners for use with Krylov subspace methods. We report on the design and development of an efficient, robust and portable implementation of AMG that is available as package HSL_MI20 within the HSL mathematical software library. HSL_MI20 implements the classical (Ruge-Stuben) AMG method and, although it can be used as a "black-box" preconditioner, it offers the user a large number of options and parameters that may be tuned to enhance its performance for specific applications. The performance of HSL_MI20 is illustrated using finite element discretisations of diffusion and convection-diffusion problems in three dimensions
Organisation
CCLRC
,
CSE
Keywords
Fortran 95
,
large sparse linear systems
,
algebraic multigrid
,
Krykov subspace methods
,
preconditioning
Funding Information
Related Research Object(s):
Licence Information:
Language
English (EN)
Type
Details
URI(s)
Local file(s)
Year
Report
RAL Technical Reports
RAL-TR-2007-021. STFC, 2007.
bmsRALTR2007021.pdf
2007
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