Re: [Help-glpk] Infinite cycles

[Mathieu Dutour]

Dear Heinrich,

thank you very much. I downloaded it and compiled.

Now, I found another problematic test case in attachment.

The error appears different. The error disappears if --norelax

option is used, so it is fine by me.

Best wishes,

  Mathieu

On 12 January 2017 at 12:08, Heinrich Schuchardt <address@hidden> wrote:

http://sourceforge.net/projects/noumenon/files/tmp/

On 1/12/17, 10:31 Mathieu Dutour <mathieu.dutour@gmail.com> wrote:

Hi Heinrich,

where can I access to GLPK 4.61 prerelease?

Also, is there a way to access to the source code

via SVN or GIT?

  Mathieu

On 11 January 2017 at 19:52, Heinrich Schuchardt <address@hidden> wrote:

glpsol -m GLP_buggy.mod  --norelax
runs fine.

glpsol -m GLP_buggy.mod
loops for ever.

I tested with the GLPK 4.61 prerelease.

Best regards

Heinrich Schuchardt

On 01/11/2017 12:14 PM, Mathieu Dutour wrote:
> Dear all,
>
> I obtained some infinite cycles when running the
> glpsol standalone solver on some instances.
> See two files in attachment.
>
> I had the instances of this phenomenon with
> version 4.57 which disappeared with version 4.60.
>
> Is there a way to avoid this phenomenon? I mean
> it is fully acceptable to me to have GLPK report
> that he cannot solve an instance due to numerical
> instability. What is not acceptable is the infinite
> cycles.
>
> Thanks in advance for any help.
> Sincerely,
>
>   Mathieu
>
>

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GLP_4d61_bug.mod
Description: audio/mod