Re: max number of CPU PEs per GPU?

From: Danny Xu (quantum_mania_at_yahoo.com)
Date: Fri Jun 10 2011 - 22:34:34 CDT

Jim, Yes, I got the full message directly from Ajas. See below. Looks like GPU only accelerates large systems, over 100k atoms. DX ________________________________ From: Ajasja Ljubetič <ajasja.ljubetic_at_gmail.com> To: Danny Xu <quantum_mania_at_yahoo.com> Cc: Norman Geist <norman.geist_at_uni-greifswald.de>; Francesco Pietra <chiendarret_at_gmail.com>; Namd Mailing List <namd-l_at_ks.uiuc.edu> Sent: Fri, June 10, 2011 12:17:43 PM Subject: Re: namd-l: max number of CPU PEs per GPU? Hi, Sometimes it seems like the mailing list sends only half my message... (I have not yet had time to look for the problem). I hope this time the whole mail gets through. I just finished benchmarking a GTX 470 on a tyan mother board with two AMD Opteron Quad 2376. Here are the results (red is with GPU, black without). One can see that the optimal CPU:GPU ratio is very size dependant, but in general more than 8 cores is never a good idea. Best regards, Ajasja On Fri, Jun 10, 2011 at 18:20, Danny Xu <quantum_mania_at_yahoo.com> wrote: What are your benchmark findings? > > > ________________________________ From: Ajasja Ljubetič <ajasja.ljubetic_at_gmail.com> >To: Norman Geist <norman.geist_at_uni-greifswald.de> >Cc: Francesco Pietra <chiendarret_at_gmail.com>; Namd Mailing List ><namd-l_at_ks.uiuc.edu> >Sent: Fri, June 10, 2011 3:50:44 AM >Subject: Re: namd-l: max number of CPU PEs per GPU? > > >Hi, > >I just finished benchmarking a GTX 470 on a tyan mother >board<http://www.tyan.com/product_board_detail.aspx?pid=453> with >two AMD Opteron Quad >2376<http://products.amd.com/en-us/OpteronCPUDetail.aspx?id=489>

This archive was generated by hypermail 2.1.6 : Mon Dec 31 2012 - 23:20:25 CST