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How to use cula sparse to do SVD on very large sparse matrix

PostPosted: Wed May 08, 2013 10:31 pm
by anytime
hi, I need your help, because I want to know how to use cula sparse to do SVD on very large sparse matrix? Our matrix is about 5W X 14W, and only about 66W non-zero values. Can you give me some advise?

Re: How to use cula sparse to do SVD on very large sparse ma

PostPosted: Thu May 09, 2013 6:12 am
by john
Is "W" for thousand or million? If it's thousands, the dense routines might work well enough for you. Otherwise I'm afraid we have nothing for you at this time.

Re: How to use cula sparse to do SVD on very large sparse ma

PostPosted: Thu May 09, 2013 6:54 am
by anytime
john wrote:Is "W" for thousand or million? If it's thousands, the dense routines might work well enough for you. Otherwise I'm afraid we have nothing for you at this time.


Thank you for your replay, and I'm sorry I made a mistake, the 'W' is for 10 thousand, that is to say, the size is about 50,000 X 140,000. Is there any way to solve this problem?
Another question. So far, I just find culaSgesvd this function to do SVD, and it is used for dense matrix, is there any other interface to do SVD for sparse matrix?

Re: How to use cula sparse to do SVD on very large sparse ma

PostPosted: Fri May 10, 2013 5:46 am
by john
We don't have a sparse SVD at this time.