Date: Fri, 27 Jan 2006 09:57:43 +0100 From: Alexander Konovalenko <kono@kth.se> To: freebsd-amd64@freebsd.org Cc: mumag@nist.gov Subject: Re: dual vs single core opteron 100's Message-ID: <200601270957.44032.kono@kth.se>
next in thread | raw e-mail | index | archive | help
I used to run OOMMF (http://math.nist.gov/oommf/) micromagnetic simulations which may consume a lot of memory (for me it's 100..500Mb depending on the size of the magnetic system). I have upgraded my AMD64 Athlon 3000+ to dual core X2 4400+. Now I can run two oommf tasks at the same time, and performance (I measure total execution time of the task) is around 186% comparing with 100% when only one task is running. This 7% degrade in performance per task is probably due to concurrent data transferring CPU<->RAM. I am very satisfied with X2 but just wonder if dual core Opteron gives better performance? Does anybody run OOMMF on Opteron? I use FreeBSD 5.4 (STABLE). /Alexander Konovalenko +46-8-5537-8142 (office) +46-7-3752-2116 http://daemon.nanophys.kth.se/~kono Royal Institute of Technology (KTH) Nanostructure Physics Department, Albanova Roslagstullsbacken 21 10691 Stockholm Sweden
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?200601270957.44032.kono>