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From: | anonymous |
Subject: | [Octave-bug-tracker] [bug #49523] eigs (R2013b and later) uses NaNs, not zeros, for unconverged Ritz values |
Date: | Mon, 10 Apr 2017 13:28:54 -0400 (EDT) |
User-agent: | Mozilla/5.0 (Macintosh; Intel Mac OS X 10.12; rv:52.0) Gecko/20100101 Firefox/52.0 |
Follow-up Comment #8, bug #49523 (project octave): @Rik: Interesting. On R2016b, on my hardware, I consistently see that allocating NaNs is about 10 times slower than just zeros. Allocating ones is also about 10 times slower than just zeros on my hardware. In any case, I don't feel strongly either way on how to handle the values of the "non-converged" eigenvectors and I do generally agree with trying to prevent garbage in, garbage out. I was just pointing out that there was a potential downside to explicitly setting all the entries in the eigenvectors. _______________________________________________________ Reply to this item at: <http://savannah.gnu.org/bugs/?49523> _______________________________________________ Message sent via/by Savannah http://savannah.gnu.org/
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