[Trilinos-Users] trillinos diagonalization

임재창 ljchang94 at kaist.ac.kr
Mon Jul 6 21:48:50 EDT 2015

i used LOBPCG solver and i didn't set any parameters. 

보낸사람 : "Hoemmen, Mark" <mhoemme at sandia.gov>
받는사람: "trilinos-users at trilinos.org" <trilinos-users at trilinos.org>
보낸날짜: 2015-06-30 08:33:52 GMT +0900 (ROK)
제목: Re: [Trilinos-Users] trillinos diagonalization

On 6/29/15, 5:12 PM, "trilinos-users-request at trilinos.org"

<trilinos-users-request at trilinos.org> wrote:

>Message: 1

>Date: Mon, 29 Jun 2015 20:34:23 +0900 (KST)

>From: =?UTF-8?B?7J6E7J6s7LC9?=<ljchang94 at kaist.ac.kr>

>To: trilinos-users at trilinos.org

>Subject: [Trilinos-Users] trillinos diagonalization

>Message-ID: <55912e883fb6_ at _imoxion.com>

>Content-Type: text/plain; charset="utf-8"


>?Dear Trilinos developers and users,



>I'm using Anasazi package to diagonalize sparse matrices with


>i gave same vectors as an initial eigenvectorw(so it is not orthogonal)

>and the time and iteration number of first step of diagnoalization were

>different between each trial with same input.

>however eigenvalues were almost same in tolerance value.


>and other steps didn't show this phenomena


>i guess that the program randomized the initial eigenvectors even i set

>some initial eigenvectors.


>is there any reason of this phenomena?


Which eigensolver did you use, and did you set any parameters?



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