Re: NAMD on 24 threads

From: Pratik Narain Srivastava (pratik.narain_at_gmail.com)
Date: Mon Jul 27 2020 - 12:10:53 CDT

Don't use windows 10 for anything.

On Mon, Jul 27, 2020 at 5:35 PM Ashkan Shekaari <shekaari_at_email.kntu.ac.ir>
wrote:

> Dear Asma,
>
> Are you using gpu along with cpu hyperthreading?
> If so, you will not have speed-up. Therefore,
> 0- Change to linux os.
> 1- Turn off cpu-hyperthreading.
> 2- Download and install the latest cuda version of namd, not the multicore
> one.
>
> *--*
> *All the best,*
> *Ashkan Shekaari,*
> *Ph.D Candidate in Solid State Physics,*
> *K. N. Toosi University of Technology,*
> *Tehran, Iran*
>
> ------------------------------
> *From: *"Asmi Mahmood" <asmi_mahmood_at_REMOVE_yahoo.com>
> *To: *"namd-l" <namd-l_at_ks.uiuc.edu>
> *Sent: *Monday, July 27, 2020 1:36:28 PM
> *Subject: *namd-l: NAMD on 24 threads
>
> Hi
>
> I need some help in optimizing my system efficiency for Simulation.
> Previously i was running NAMD on system with 4 processor on windows 10 and
> get 10 ns results in 10 days. Now as i have upgraded my system to dual
> processor each with 12 core and 12 threads (total 24 processor) with
> NVIDIA quadro fx 580 i was expecting a greater efficiency but still not
> getting desirable results as 10 ns is taking 5 days. It is to mention that
> i am using OS window 7 on my upgraded system and NAMD 2.13 multicore 64
> bit..
>
> what is reason of so low speed on 24 processors?
>
> In addition, i am planing to upgrade OS to linux and wants use CUDA
> environment if can be done on my system. Please guide me with this GPU card
> can i use CUDA as it supports CUDA 1.1 (as in its specifications). If yes
> which NAMD version should i use.
>
>
>
> Asma Tariq
>
>

-- 
Pratik Narain Srivastava,
c/o Dr. Satish Mishra
SRF, LSN-204
MPI division,
CSIR-CDRI, Lucknow
Ph. 9454285924

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