Eigen Decomposition of a large sparse matrix

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Im computing dimensioality reduction of a square matrix A using matlab,my issue now is that I have problem computing eigvalue decomposition of a 13000 x 13000 matrix A,ie

[v d]= eigs(A)

bcos there are a lot zeros(sparse), I get 'out of memory error' using a 4GB RAM,now Im convinced is not my pc problem, since the memory is not used up when eig(s) command is run. the help I saw online suggested I use ARPACK lib with C++/C. Please any solution is welcome

Posted 13-Jul-11 2:26am

casom

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వేంకటనారాయణ(venkatmakam) · Accepted Answer · 2011-07-13T02:34:00

Solution 1

Some days back i worked with open source linear algebra library LAPACK for single processor.Take a look on it.By the way There is another version of same library SCALAPACK for parallel processing system.I suggest these libraries.

Posted 13-Jul-11 2:34am

వేంకటనారాయణ(venkatmakam)