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 Post subject: How to assign large memory for ap::real_2d_array?
PostPosted: Sat Jun 05, 2010 6:36 am 
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Joined: Sat Jun 05, 2010 6:30 am
Posts: 5
I am using the function smatrixevd to calculate the eigenvectors of a large symmetric matrix ap::real_2d_array M, where its size is 10000 x 10000.

But when I set M.setlength(10000,10000), I have errors. Can I set M to be a upper triangular matrix? So that memory space will not be exceeded?

Thank you for your help. :D


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 Post subject: Re: How to assign large memory for ap::real_2d_array?
PostPosted: Sun Jun 06, 2010 9:50 am 
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Joined: Fri May 07, 2010 7:06 am
Posts: 878
Quote:
Can I set M to be a upper triangular matrix? So that memory space will not be exceeded?

Unfortunately, no. I have to rewrite linear algebra algorithms from scratch if I want them to be efficient enough on packed matrices. It will be implemented one day, but this item has low priority in my TODO list.


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 Post subject: Re: How to assign large memory for ap::real_2d_array?
PostPosted: Sun Jun 06, 2010 12:06 pm 
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Joined: Sat Jun 05, 2010 6:30 am
Posts: 5
oic, I will wait for your new version. I am a big fan of ALGLIB, thank you very much for sharing it. =)


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