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From: | Dmitri A. Sergatskov |
Subject: | Re: slow LU decomposiotion? for octave 4 for windows |
Date: | Tue, 31 May 2016 07:42:09 -0500 |
Hello
I am now preparing the lecture notes for my class using octave on my University.
I noticed that bench mark for the lu decomposition is slow on octave 4.
************************************
Octave-4.0.2 mingw (64 bit)
>> lutest
Simple left division
Elapsed time is 0.526351 seconds.
LU decomposition
Elapsed time is 0.112075 seconds.
************************************
octave-4.1.0+ mingw (64bit)
(hg clone on May 28, 2016)
>> lutest
Simple left division
Elapsed time is 2.01935 seconds.
LU decomposition
Elapsed time is 0.125084 seconds.
************************************
The lu decomposition test is very slow on octave 4.
While simple division is fastest on octave 4.0 but is slowest on 4.1.0+.
What happens ?
Does anyone see this on other platforms?
Tatsuro MATSUOKA
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