From: Philip Peartree (P.Peartree_at_postgrad.manchester.ac.uk)
Date: Sun Sep 23 2007 - 06:24:32 CDT
Check your config, because you really should get a huge difference out of
infiniband vs gigE. You might have to compile yourself rather than using the
downloaded binaries, so it uses the correct drivers for the infiniband
system..
My 2 cents :D
Philip Peartree
Quoting Carsten Olbrich <ocarsten_at_googlemail.com>:
> Hi Stephen,
>
> we have a quad core Xeon system with Infiniband and Ethernet.
> We observed no performance differences between network types.
> But you should use the Linux-amd64 build. This is about twice as fast
> as the Linux-i686 build. Also the option +giga increased the
> performance.
>
> Regards,
>
> Carsten
>
> On 9/21/07, Stephen M. Dutz <smdutz_at_csupomona.edu> wrote:
>>
>>
>>
>>
>> Hi all,
>>
>>
>>
>> I've searched the message board and the wiki for posts on running NAMD on
>> dual-quad core Xeon systems with an Infiniband backbone, however haven't
>> found much data. I'm currently running the Linux-i686 build and in the
>> process of compiling the source code to see if this speeds things up at all.
>> I was wondering if anyone out there has tried running NAMD on a similar
>> system, and if so what was your methodology for maximizing performance, and
>> what type of scaling do you observe.
>>
>>
>>
>> Thanks in advance,
>>
>>
>>
>> Steve
>>
>>
>
>
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