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[Octave-bug-tracker] [bug #45890] Sparse A*x and A+B are a bit slow

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.


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