Problem with dsytrd and dsyevd

Open discussion for MAGMA

Problem with dsytrd and dsyevd

Postby Abdelfattah » Wed Dec 14, 2011 4:31 am

Hi,

I'm trying to run the MAGMA test for tridiagonalization (SYTRD) and symmetric eigen values (SYEVD) on double precision. I was running to get results up to 15000 matrix dimension. However, I had a seg fault after 8000 on dsyevd, and after 10000 on dsytrd. It seems this is a memory issue. But I do really extend the runs beyond 10000.

I'm using MAGMA 1.0.0-rc5 and running on Fermi C2070.

You comments are appreciated.

--Abdelfattah
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Re: Problem with dsytrd and dsyevd

Postby jeremiahpalmer » Thu Dec 15, 2011 1:29 pm

One remedy for the memory issue would be to use a multi-GPU sytrd. Does anyone on the magma team have an idea of when this type of feature will be ready for use?

Thanks,
Jeremiah
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Re: Problem with dsytrd and dsyevd

Postby Stan Tomov » Wed Feb 08, 2012 3:15 am

For larger matrices you would have to use algorithms supporting multiGPUs. We developed them for the symmetric and general matrices cases and will release them in MAGMA 1.2.
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Re: Problem with dsytrd and dsyevd

Postby fletchjp » Fri Feb 10, 2012 12:27 pm

Do you have a features list and estimate of release date for 1.2?

Thanks

John
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