The J/PSI cluster (#141 on the new TOP500 list) is indeed running Scientific Linux 4.4. Perhaps the reason it shows as Linux is that when one uses 'uname -a' it does not show much detail. I am pretty sure Don submitted our results to the TOP500 and he may be able to explain how this data field is populated. Ken S. [root@jpsi1 ~]# cat /etc/redhat-release Scientific Linux Fermi LTS release 4.4 (Wilson) [root@jpsi1 ~]# uname -a Linux jpsi1.fnal.gov 2.6.9-89.0.3.ELsmp #1 SMP Tue Jun 30 09:14:02 CDT 2009 x86_64 x86_64 x86_64 GNU/Linux On Nov 18, 2009, at 10:54 AM, Keith Chadwick wrote: > The J/PSI cluster at Fermilab is listed as running "Lunix", > and I believe that it is running Scientific Lunix. > > Don and/or Amitoj can comment further... > > -Keith. > > At 8:32 PM -0800 11/17/09, Keith Lofstrom wrote: >> I'm at SC09 this week. Awesome hardware, awesome people. The >> Top500 for the month was announced, Linux runs on 446+ of them, >> no surprise there. >> >> What is a surprise is the nonappearance of Scientific Linux on >> this list: >> http://www.top500.org/stats/list/34/os >> >> I would assume SL would be running on many, if not most, of the >> big iron X86 array systems. I would also assume more celebrity >> SL deployments means more funding for our heros at Fermi. Is >> this a "don't ask, don't tell" thing? >> >> Keith >> >> -- >> Keith Lofstrom [log in to unmask] Voice >> (503)-520-1993 >> KLIC --- Keith Lofstrom Integrated Circuits --- "Your Ideas in >> Silicon" >> Design Contracting in Bipolar and CMOS - Analog, Digital, and Scan >> ICs ============================================================== Ken Schumacher <[log in to unmask]> (o) 630-840-4579 (f) 630-840-3109 Computing Div/HPC LQCD Group Loc: WH8E http://www.usqcd.org/fnal/ Fermi National Accelerator Lab; PO Box 500 MS 120 Batavia, IL 60510-0500