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kirankumarm
Beginner
56 Views

2nd smallest Eigenvalue of sparse symmetric matrix

Hi,
I need to find the 2nd smallest eigenvalue and corresponding eigenvector of a large sparse real symmetric matrix. The matrix is stored in CSR format. I see that SSYEVX function does the required work, but the zeros entries in the matrix also has to be stored. Is there any other function which does my work..? or any other suggestions please.

Regards,
Kiran.
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2 Replies
Gennady_F_Intel
Moderator
56 Views

Hi kiran,
there are no such functionsfor this type of matrices.
--Gennady
kirankumarm
Beginner
56 Views

Hi Gennady,
Not for CSR format but are there any functions to find the second smallest eigenvector of a sparse symmetric real matrix stored in any format.
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