How to assign large memory for ap::real_2d_array?

franziss · **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

Sergey.Bochkanov · **Joined:** Fri May 07, 2010 7:06 am **Posts:** 927

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.

franziss · **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. =)

forum.alglib.net

Forum rules

How to assign large memory for ap::real_2d_array?

Who is online