Re: Abe versus Lincoln

From: johan strumpfer (johanstr_at_ks.uiuc.edu)
Date: Thu Apr 07 2011 - 13:40:13 CDT

Hi Gianluca,

I've been running on both. Some benchmarks (system size ~120000 atoms):
Using lincoln 32 CPU's (i.e. 4 nodes) I get ~0.034 s/step and using
160 CPU's on Abe I get ~0.017 s/step.

Note that using CUDA NAMD, the scaling is good up to a point and then
drops dramatically. E.g. running on 5 nodes on Lincoln also gets me
approximate 0.034 s/step. So you'll be able to run faster on Abe, but
it will use up many more SU's.

Hope this helps,
Johan

On Thu, Apr 7, 2011 at 2:22 PM, Gianluca Interlandi
<gianluca_at_u.washington.edu> wrote:
> Hi!
>
> Are there any benchmarks available which compare the performance of NAMD on
> Lincoln (CUDA heterogenous cluster) with its performance on a traditional
> CPU only cluster like Abe?
>
> Thanks!
>
>     Gianluca
>
> -----------------------------------------------------
> Gianluca Interlandi, PhD gianluca_at_u.washington.edu
>                    +1 (206) 685 4435
>                    http://artemide.bioeng.washington.edu/
>
> Postdoc at the Department of Bioengineering
> at the University of Washington, Seattle WA U.S.A.
> -----------------------------------------------------
>
>

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