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From: | Umut Tabak |
Subject: | Re: [Getfem-users] Gmm matrix multiply accuracy issue |
Date: | Wed, 19 Oct 2011 16:37:58 +0200 |
User-agent: | Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.1.16) Gecko/20101226 Icedove/3.0.11 |
On 10/19/2011 10:29 AM, Umut Tabak wrote:
Dear all,As a reply to my own post, there is definitely a problem in the linear algebra operations in gmm++ from accuracy point of view. I tested my problem with MTL4 and the results seem to be far more close to what they should be. I am not sure what the problem is in gmm++ but this deserves some attention. I can provide a test case in MATLAB and gmm++ where I compare these tridiagonal coefficients of the lanczos proces. To test the MATLAB code, one should have the MUMPS MATLAB interface installed. Best regards, Umut |
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