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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
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
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Language English (EN)
Type Details URI(s) Local file(s) Year
Report RAL Technical Reports RAL-TR-2007-021. STFC, 2007. bmsRALTR2007021.pdf 2007