Hello Andrew, the interesting thing about Matheu's example is that the infeasability is constantly increasing over multiple orders of magnitude.
Somewhere the restart is missing. Best regards Heinrich Schuchardt -------- Forwarded Message -------- Subject: Re: [Help-glpk] Infinite cycles Date: Mon, 16 Jan 2017 18:02:00 +0100 To: Heinrich Schuchardt <[email protected]> CC: Help Glpk <[email protected]> Dear Heinrich, in attachment you can find a problem that runs into infinite loops for glpsol -m GLP_buggy_6d21.mod --norelax and GLPSOL being version 4.61 Mathieu On 11 January 2017 at 19:52, Heinrich Schuchardt <[email protected] <mailto:[email protected]>> 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 > > > _______________________________________________ > Help-glpk mailing list > [email protected] <mailto:[email protected]> > https://lists.gnu.org/mailman/listinfo/help-glpk <https://lists.gnu.org/mailman/listinfo/help-glpk> >
GLP_buggy_6d21.mod
Description: audio/mod
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