Hi, I don't believe the memory to be in cause. The problem is solved using 25Mb according to glpsol. I've made the problems to be solved available on my dropbox: https://www.dropbox.com/sh/ja2myngas5lorow/FEtqJuklmI/assigments-mip.tar.gz
Patrik Dufresne On Fri, Feb 1, 2013 at 11:15 AM, Reginald Beardsley <pulask...@yahoo.com>wrote: > Looking at the descriptions I think you're thrashing. Add more memory to > system 1, unless of course there's a typo and that should read "32GiB" > instead of "3GiB" > > > --- On *Fri, 2/1/13, Patrik Dufresne <ikus...@gmail.com>* wrote: > > > From: Patrik Dufresne <ikus...@gmail.com> > Subject: Re: [Help-glpk] Performance decrease with more powerful computer > To: "Reginald Beardsley" <pulask...@yahoo.com> > Cc: "glpk" <help-glpk@gnu.org> > Date: Friday, February 1, 2013, 9:49 AM > > > Hi Reginald, > > Here are the hardware specs i'm comparing. > > System 1 > Windows XP SP2 > Intel Core i5 650 @ 3.20GHz 4 MB Cache > 3GiB DDR3 1066/1333 > CPU mark (according to cpubenchmark.net) : 3154 > Total computation time : 331 sec > > System 2 > Windows XP SP2, Windows 7 64bits, Debian 64bits > Core i7 CPU M 620 @ 2.67GHz 4M Cache > 4GiB DDR3 1066 > CPU mark (according to cpubenchmark.net) : 2718 > Total computation time : 114 secs > > System 3 > Windows XP SP2, Debian 64bits > *Core 2 Duo CPU E6550 @ 2.33GHz **4 MB** Cache L2 > *4GiB DDR2 800 > CPU mark (according to cpubenchmark.net) : 1493 > Total computation time : 172 secs > > I didn't run the benchmark on the computer it self, but the different > between the number is big enough to expect better performance from System > no 1 then System no 3. The total computation time of the problem on > different platform for the same computer are almost identical. (less then > 0.5 sec different). It's safe to assume the platform doesn't have any > impact on the performance. > > I'm using GLPK 4.47 on every platform. On Linux, I did compile it from > source with default flags. For Windows, I pick the pre-compiled version > provided by winglpk project. > > To solve the problem, I need to run GLPK multiple time sequentially. I may > provide dump of every instance of the problem. > > Patrik Dufresne > > On Fri, Feb 1, 2013 at 10:23 AM, Reginald Beardsley > <pulask...@yahoo.com<http://mc/compose?to=pulask...@yahoo.com> > > wrote: > > Could you provide a few details? > > System configurations you're comparing? GLPK version? Compile time > options specified? > > There are a huge number of possibilities. Why do you think the computer > is "more powerful"? > > Reg > > > > --- On *Fri, 2/1/13, Patrik Dufresne > <ikus...@gmail.com<http://mc/compose?to=ikus...@gmail.com> > >* wrote: > > > From: Patrik Dufresne > <ikus...@gmail.com<http://mc/compose?to=ikus...@gmail.com> > > > Subject: [Help-glpk] Performance decrease with more powerful computer > To: "GLPK help" <help-glpk@gnu.org<http://mc/compose?to=help-glpk@gnu.org> > > > Date: Friday, February 1, 2013, 8:56 AM > > > Hi, > > I'm using GLPK in one project and the time taken to compute is longer on a > more powerful computer. Does it make any sense to you ? > > I don't have any clues about how to debug it. I would really appreciate > tips to diagnose the problem. > > Patrik Dufresne > > -----Inline Attachment Follows----- > > _______________________________________________ > Help-glpk mailing list > Help-glpk@gnu.org <http://mc/compose?to=Help-glpk@gnu.org> > https://lists.gnu.org/mailman/listinfo/help-glpk > > > _______________________________________________ > Help-glpk mailing list > Help-glpk@gnu.org <http://mc/compose?to=Help-glpk@gnu.org> > https://lists.gnu.org/mailman/listinfo/help-glpk > > > > _______________________________________________ > Help-glpk mailing list > Help-glpk@gnu.org > https://lists.gnu.org/mailman/listinfo/help-glpk > >
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