[Trilinos-Users] [EXTERNAL] Anasazi diagonalization test

[홍광우]

Dear Heidi Thornquist,


Thank you for your reply.


As you mentioned, I just need a subset of eigenpairs, not all of them. 


I'm wondering whether or not there exists testing sparse matrices that computing (for example) 10 eigenpairs to test my compiling options.


Kwangwoo Hong


-----------------------원본메일-----------------------
보낸사람 : "Thornquist, Heidi K" <hkthorn at sandia.gov>
받는사람: 홍광우<yuriprime at kaist.ac.kr>,""trilinos-users at software.sandia.gov" " <trilinos-users at software.sandia.gov>
보낸날짜: 2014-07-16 04:14:07 GMT +0900 (Asia/Seoul)
제목: Re: [EXTERNAL] [Trilinos-Users] Anasazi diagonalization test






Hi Kwangwoo,


The iterative methods in Anasazi should be used for computing a subset of the eigenvalues of a matrix or matrix pencil.  In general, they should not be used for diagonalizing a sparse matrix (thus computing all the eigenvalues and eigenvectors).  Do you
 really need all the eigenvalues?


Thanks,
Heidi




-- 


Heidi K. Thornquist

Electrical Models & Simulation
Sandia National Laboratories
Albuquerque, NM  87185-1323








From: 홍광우 <yuriprime at kaist.ac.kr>
Date: Tuesday, July 15, 2014 5:05 AM
To: "\"trilinos-users at software.sandia.gov\"" <trilinos-users at software.sandia.gov>
Subject: [EXTERNAL] [Trilinos-Users] Anasazi diagonalization test




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Dear Trilinos developers and users,



I'm using Anasazi package to diagonalize sparse matrices with Epetra_CrsMatrix. 



Mostly, I use LOBPCG solver, but I think that the speed of diagonalizing matrices is little bit slow. So, I want to test LOBPCG solver with my computer setting (compiler, compile option, ...).



Is there any testing sparse matrix or benchmark result? (Given matrix and computing time including parallelization.)



Best regards,



Kwangwoo Hong






Kwangwoo Hong

Ph.D Candidate

Computational Quantum Molecular Science Lab.



Department of Chemistry, KAIST




(Tel) +82-42-350-2855




















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