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[Octave-bug-tracker] [bug #31479] Crash & bugs in eigs

From: Rik
Subject: [Octave-bug-tracker] [bug #31479] Crash & bugs in eigs
Date: Sat, 29 Jan 2011 19:39:30 +0000
User-agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv: Gecko/20101206 Ubuntu/9.10 (karmic) Firefox/3.6.13

Update of bug #31479 (project octave):

                  Status:               Confirmed => Fixed                  
             Open/Closed:                    Open => Closed                 


Follow-up Comment #17:

Yes, this bug has been addressed and I will close the report.

The dneupd -8 error is linked to the initial guess for the starting solution
and to the number of Lanzcos basis vectors used.  By supplying a static
starting point for eigs through the OPTS structure I can't get it to fail with
several 100K executions.  Similarly, If I adjust the number of basis vectors
using OPTS.p to 3 I can't get it to fail.  The basis vector issue won't
generally be a problem on a truly sparse matrix where the dimension N is much
greater than the number of eigenvalues requested.


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