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[Octave-bug-tracker] [bug #41305] eigs: error -14 in dneupd when request

From: Mike Miller
Subject: [Octave-bug-tracker] [bug #41305] eigs: error -14 in dneupd when requesting fewer eigenvalues
Date: Mon, 27 Jan 2014 22:42:17 +0000
User-agent: Mozilla/5.0 (X11; Linux i686; rv:17.0) Gecko/20100101 Firefox/17.0

Update of bug #41305 (project octave):

                Severity:                1 - Wish => 3 - Normal             
              Item Group:         Feature Request => Incorrect Result       
                 Summary: generate human-readable error strings from arpack
error codes => eigs: error -14 in dneupd when requesting fewer eigenvalues


Follow-up Comment #18:

Sorry Max, I totally missed the important part of your comment #13, and indeed
that I was able to confirm earlier now that I review the whole history here.

I honestly don't know enough about what's going on under the hood here, but
going back to my comment #1, I show that eigs can fail to return 1 or 2
eigenvalues with a given matrix, but successfully returns 3. This does seem
like a bug to me.

I'll open a separate report for better error reporting.


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