Re: Octave 6.1 issue

Hi,

There is a bug on Octave 6.1 reducing the performance a lot:
https://savannah.gnu.org/bugs/?59711

Kind regards,
Renato



Em ter, 29 de dez de 2020 16:10, Rory Conolly <[email protected]>
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
>
>