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 <[email protected]> wrote: From: Patrik Dufresne <[email protected]> Subject: Re: [Help-glpk] Performance decrease with more powerful computer To: "Reginald Beardsley" <[email protected]> Cc: "glpk" <[email protected]> Date: Friday, February 1, 2013, 9:49 AM Hi Reginald, Here are the hardware specs i'm comparing. System 1Windows XP SP2Intel 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 2Windows 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 3Windows 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 <[email protected]> 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 <[email protected]> wrote: From: Patrik Dufresne <[email protected]> Subject: [Help-glpk] Performance decrease with more powerful computer To: "GLPK help" <[email protected]> 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 [email protected] https://lists.gnu.org/mailman/listinfo/help-glpk _______________________________________________ Help-glpk mailing list [email protected] https://lists.gnu.org/mailman/listinfo/help-glpk
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