[Top][All Lists]

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: Octave 6.1 issue

From: Renato S. Yamane
Subject: Re: Octave 6.1 issue
Date: Tue, 29 Dec 2020 17:02:08 +0000


There is a bug on Octave 6.1 reducing the performance a lot:

Kind regards,

Em ter, 29 de dez de 2020 16:10, Rory Conolly <> escreveu:
Hi, I've been working on a large optimization project (several hundred lines of code in multiple files spread over a main  directory  (folder) and several sub-directories). Have been making good progress with the work in Octave 5.2. Typical optimization runs take 6 to 12 hr on a Windows 10 computer with an AMD Ryzen 9 3900X processor and plenty of RAM, with each iteration of the optimization taking about 25 - 30 seconds. A typical optimization run can involve 300 to over 1000 iterations of the main program.

I recently installed Octave 6.1 on the same computer. The optimization runs identically, initially. But with time, the duration of each iteration starts to increase. After a couple of hundred iterations, each iteration is taking over a minute. This does not happen in Octave 5.2 - the iteration time stays the same until the optimization run completes.

I'm using fminsearch, but I have adapted fminsearcbnd from the MATLAB user library. This allows me to specify bounds for the parameters being varied, which is important for my problem. So I call fminsearchbnd, which in turn calls fminsearch.

The code is too large to post here but I thought I should bring this to the attention of the developers. Happy to help if there is something I can do.

- Rory Conolly

reply via email to

[Prev in Thread] Current Thread [Next in Thread]