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<body class='hmmessage'><div style="text-align: left;">Hi,<br><br>Gromacs 4 has blue gene optimized inner loops, which give a factor of 2<br>performance improvement.<br>On a BG/L it runs at 20-25% of the speed of x86 cores, but it scales<br>quite well.<br><br>Berk.<br><br></div><br><hr id="stopSpelling">> Date: Mon, 31 Mar 2008 17:29:57 -0700<br>> From: tieleman@ucalgary.ca<br>> To: gmx-users@gromacs.org<br>> Subject: Re: [gmx-users] Blue Gene/P<br>> <br>> Thanks. I've seen the BG/L argument, but BG/P processors are faster. I <br>> have no idea how much though, and am looking for actual numbers or if <br>> those are not available a guess based on actual BG/L numbers and some <br>> argument about scaling to a BG/P.<br>> <br>> Cheers,<br>> Peter<br>> <br>> Mark Abraham wrote:<br>> > Peter Tieleman wrote:<br>> >> Hi,<br>> >><br>> >> Has anyone run benchmarks on a BlueGene/P ?<br>> ><br>> > The word from IBM in December was that since GROMACS 3.x would lack <br>> > both assembly inner-loops and threading on BlueGene/L, that it wasn't <br>> > worthwhile running GROMACS on onw. I figure that goes for BlueGene/P too.<br>> ><br>> > Mark<br>> > _______________________________________________<br>> > gmx-users mailing list gmx-users@gromacs.org<br>> > http://www.gromacs.org/mailman/listinfo/gmx-users<br>> > Please search the archive at http://www.gromacs.org/search before <br>> > posting!<br>> > Please don't post (un)subscribe requests to the list. Use the www <br>> > interface or send it to gmx-users-request@gromacs.org.<br>> > Can't post? Read http://www.gromacs.org/mailing_lists/users.php<br>> ><br>> ><br>> <br>> _______________________________________________<br>> gmx-users mailing list gmx-users@gromacs.org<br>> http://www.gromacs.org/mailman/listinfo/gmx-users<br>> Please search the archive at http://www.gromacs.org/search before posting!<br>> Please don't post (un)subscribe requests to the list. Use the <br>> www interface or send it to gmx-users-request@gromacs.org.<br>> Can't post? Read http://www.gromacs.org/mailing_lists/users.php<br><br /><hr />Express yourself instantly with MSN Messenger! <a href='http://clk.atdmt.com/AVE/go/onm00200471ave/direct/01/' target='_new'>MSN Messenger</a></body>
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