Re: GPU-CPU small-scale machine for NAMD

From: Darko Stefanovski (stefanov_at_usc.edu)
Date: Tue May 17 2011 - 12:10:31 CDT

Hi Francesco,

GTX460 has 336 CUDA cores and if you go with three of them you will be
getting 1008 CUDA cores.That is very close to the performance of a
GTX590 which has 1024 CUDAs and approximately the same memory. Now in
regards to working with two computers with CUDAs, We do have a setup
like this here but unfortunately working through Ethernet is extremly
slow. Part of the slow down is associated with the protocol you will be
using. I tried both rsh ans ssh and two machines working on the same
problem as one machine was much much much slower. Perhaps we are doing
something wrong.

Best wishes,
Darko

On 5/16/2011 1:45 AM, Francesco Pietra wrote:
> I have followed previous posts on small-scale GPU-CPU, whre Axel
> (Professor Kohlmeyer) gave key indications.
>
> For a classical-MM-dedicated machine (i.e. single precision
> calculations), i am trying to spare money (and electricity bill) as
> much as possible, considering that as a particularly temporary
> investment (future of integrated GPU-CPU cards?). Thus, I am
> considering a consumer motherboard based on AMD Phenom II X6 1075T CPU
> and 2/3x GTX460s.
>
> My question is, is there any experience on running NAMD on such
> graphic cards? If yes, is there any experience on a cluster made of
> two such machines? (considering that I have no more an electronic
> engineer helping me).
>
> Thanks a lot for advice
> francesco pietra
>

This archive was generated by hypermail 2.1.6 : Wed Feb 29 2012 - 05:23:57 CST