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