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From: | Rik |
Subject: | [Octave-bug-tracker] [bug #45890] Sparse A*x and A+B are a bit slow |
Date: | Wed, 15 Aug 2018 18:58:20 -0400 (EDT) |
User-agent: | Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:61.0) Gecko/20100101 Firefox/61.0 |
Update of bug #45890 (project octave): Priority: 3 - Low => 5 - Normal _______________________________________________________ Follow-up Comment #19: Good catch. I also find that 4.2.2 is significantly faster for the transpose/multiply. It turns out that this is a very recent (6 days ago) drop in performance due to this cset parent: 25753:b5dc88246c02 disable compound binary operator optimization (bug #54465) I think I was right that transpose and multiply used to be recognized as a possible compound operator, but now is recognized as a transpose followed by a multiply so the timing is equal to the sum of the individual operations. _______________________________________________________ Reply to this item at: <http://savannah.gnu.org/bugs/?45890> _______________________________________________ Message sent via Savannah https://savannah.gnu.org/
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