ISSN 2234-8417 (Online) ISSN 1598-5857 (Print)

Table of Contents
2014's   32,3-4(May)
  Performance comparison of preconditioned iterative methods with direct preconditioners
    By Jae Heon Yun, Hyo Jin Lim ..........1517
Generic Number - 1517
References - 0
Written Date - May 16th, 14
Modified Date - May 16th, 14
Downloaded Counts - 1141
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Original File
In this paper, we first provide comparison results of preconditioned AOR methods
with direct preconditioners $I+\beta L$, $I+\beta U$ and $I+\beta (L+U)$ for
solving a linear system whose coefficient matrix is a large sparse irreducible L-
matrix, where $\beta > 0$. Next we propose how to find a near optimal parameter
$\beta$ for which Krylov subspace method with these direct preconditioners
performs nearly best. Lastly numerical experiments are provided to compare the
performance of preconditioned iterative methods and to illustrate the theoretical

학회 : 정보전산응용수학회(KSICAM) (구: KSCAM & Korean SIGCAM)
연구소 : SPCHIN 전산응용수학연구소 ( SPCHIN-CAM Institute : SPCHIN-CAMI)
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