Re: [Beowulf] latency vs bandwidth for NAMD

2007-08-22 Thread Jim Phillips
Those NAMD results are up now ("Cambridge Xeon/3.0 InfiniPath" at http://www.ks.uiuc.edu/Research/namd/performance.html). My opinion is that SDR is sufficient for NAMD, but I haven't had a chance to see if there is any benefit to DDR. I did hear that the new TACC Ranger cluster with 16 core

Re: [Beowulf] latency vs bandwidth for NAMD

2007-08-22 Thread Jim Phillips
earch Scientist Department of Chemistry and Biochemistry University of North Carolina at Greensboro 435 New Science Bldg. Greensboro, NC 27402-6170 [EMAIL PROTECTED] [EMAIL PROTECTED] 336-334-4766 lab 336-334-5122 office 336-334-5402 fax -----Jim Phillips <[EMAIL PROTECTED]> wrote: - T

Re: [Beowulf] threading building blocks

2007-08-01 Thread Jim Phillips
I just saw a talk that somewhat covered TBB. See slides at http://www.ncsa.uiuc.edu/UserInfo/Training/Workshops/Multicore/presentations/Intel_Threading_Tools.ppt It's closer to OpenMP than pthreads. One idiom I recall is to change your loop body to an operator, possibly adding locks or atomic

Re: [Beowulf] 2u case for mounting existing external SDLT320 drives?

2006-08-03 Thread Jim Phillips
Low-tech suggestion, but why not just set the shoeboxes on top of whatever rackmounted server they'll be connected to? Does it need to be 2U? -Jim On Thu, 3 Aug 2006, David Mathog wrote: We currently have two SDLT320 external "shoebox" type SDLT320 drives. It would be nice to move these

[Beowulf] Free Cluster-Building Workshops March 16-17 & April 20-21, 2006

2006-02-15 Thread Jim Phillips
http://www.ks.uiuc.edu/Training/Workshop/Cluster2006/ In March and April, the Theoretical and Computational Biophysics Group will host a pair of free workshops dedicated to teaching users and system administrators how to specify, design, build, and run a high- performance Linux