Hi, Where did you get this 10% number? I would expect that for Gromacs the performance is linear with the clock frequency and the FSB does not matter much. Thus the difference is only 5%. I would rather have 20% more nodes.
Berk. ---------------------------------------- > Date: Mon, 5 May 2008 10:58:13 +0200 > From: [EMAIL PROTECTED] > To: gmx-users@gromacs.org > Subject: [gmx-users] benchmark: buying a new cluster > > Hi all, > we are going to buy a new cluster and we are in doubt about the frequency to > consider. > Basically, we have the possibility to buy either 18 nodes dual quad-core > (18x8 cores) bearing > Intel-Xeon E5430 2.66 MHz and FSB 1333 MHz or 15 nodes dual quad-core (15x8 > cores) bearing > Intel-Xeon E5462 2.8 MHz and FSB 1600 MHz. The latest seems to be **only** > 10% faster then the first. > However, thinking to the new gromacs4, we are in doubt about the best > solution. Is it better to have > a **nominal** 10% cpu faster or to have 24 further cores? > > Thanks in advance for any welcome suggestion, > > Regards > > andrea > > > -- > ------------------------------- > Andrea Spitaleri PhD > Dulbecco Telethon Institute > c/o DIBIT Scientific Institute > Biomolecular NMR, 1B4 > Via Olgettina 58 > 20132 Milano (Italy) > http://biomolecularnmr.ihsr.dom/ > Tel: 0039-0226434348/5622/3497/4922 > Fax: 0039-0226434153 > ------------------------------- > > ******************************************************************** > Sostieni la ricerca del San Raffaele con il 5permille! > E' SEMPLICE E NON COSTA NULLA. > Basta indicare nell'apposito riquadro della dichiarazione dei > redditi ("Finanziamento agli enti della ricerca sanitaria") > il codice fiscale della > Fondazione Centro S. Raffaele del Monte Tabor: > 03 06 42 80 153 e ricordarsi di firmare. > Se vuoi saperne di piu' scrivi a [EMAIL PROTECTED] o vai sul sito > www.5xmille.org > _______________________________________________ > gmx-users mailing list gmx-users@gromacs.org > http://www.gromacs.org/mailman/listinfo/gmx-users > Please search the archive at http://www.gromacs.org/search before posting! > Please don't post (un)subscribe requests to the list. Use the > www interface or send it to [EMAIL PROTECTED] > Can't post? Read http://www.gromacs.org/mailing_lists/users.php _________________________________________________________________ Express yourself instantly with MSN Messenger! Download today it's FREE! http://messenger.msn.click-url.com/go/onm00200471ave/direct/01/_______________________________________________ gmx-users mailing list gmx-users@gromacs.org http://www.gromacs.org/mailman/listinfo/gmx-users Please search the archive at http://www.gromacs.org/search before posting! Please don't post (un)subscribe requests to the list. Use the www interface or send it to [EMAIL PROTECTED] Can't post? Read http://www.gromacs.org/mailing_lists/users.php
