Solve Symmetric System

General CULA Dense (LAPACK & BLAS) support and troubleshooting. Use this forum if you are having a general problem or have encountered a bug.

Solve Symmetric System

Postby jezz0r » Thu Jul 04, 2013 4:08 am

Hi, I have a largish (2000*2000) dense system to solve, but it is symmetric (not positive definite though). How would you suggest I deal with this? I can fill both sides of the matrix on the host before running sgesv, or I could use ssyr2k with an identity matrix to fill one side give the other, or something else? I'm looking for the fastest method. Thanks.
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Re: Solve Symmetric System

Postby john » Mon Jul 08, 2013 6:06 am

I'd try filling the missing side. You could do this on the host or with a very simple kernel on the GPU. ssyr2k would be big-time overkill.
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