[Beowulf] AMD Opteron Linpack Benchmark

james pepin pepin at usc.edu
Mon Sep 25 17:48:11 EDT 2006


we did to get run to finish. had to do with heat loading over a long  
period at max use...

On Sep 25, 2006, at 2:43 PM, Mike Davis wrote:

> Jim,
>
> I thought that I had read that you removed memory from some of the  
> nodes. I must have been mistaken on that point.
>
> Mike Davis
>
>
> james pepin wrote:
>> whats the question??
>> the effeciency we saw improved with increased memory, also  
>> improves  with more cores on a node...
>> jim
>> On Sep 25, 2006, at 10:39 AM, Daniel Kidger wrote:
>>> Mike (or indeed anybody else who might know)
>>>
>>> Can you post a reference to the list for Jim Pepin's ppt ?
>>> Google didn't come up with anything useful
>>>
>>> Closest might be "Building and Benchmarking a 10 TF Linux  
>>> Cluster"  Jim Pepin,
>>> USC at Sun HPC consortium 2005 but can't find any online  
>>> resources  for this ?
>>>
>>> Daniel
>>>
>>> Dr. Daniel Kidger, Technical Consultant, ClearSpeed Technology  
>>> plc,  Bristol,
>>> UK
>>> E: daniel.kidger at clearspeed.com
>>> T: +44 117 317 2030
>>> M: +44 7738 458742
>>> "Write a wise saying and your name will live forever." - Anonymous.
>>>
>>>
>>> -----Original Message-----
>>> From: beowulf-bounces at beowulf.org [mailto:beowulf-  
>>> bounces at beowulf.org] On
>>> Behalf Of Mike Davis
>>> Sent: 24 September 2006 17:48
>>> To: Eric W. Biederman
>>> Cc: Lai Dragonfly; beowulf at beowulf.org
>>> Subject: Re: [Beowulf] AMD Opteron Linpack Benchmark
>>>
>>> Also, check out the changes that Jim Pepin at USC made to his   
>>> cluster to
>>> produce more teraflops. There is a Powerpoint on the web that  
>>> gives  some
>>> of the details. If I remember correctly he actually removed RAM   
>>> from the
>>> nodes and made a few other changes.
>>>
>>> Mike Davis
>>>
>>> Eric W. Biederman wrote:
>>>
>>>> "Lai Dragonfly" <poknam at gmail.com> writes:
>>>>
>>>>
>>>>
>>>>> Hi,
>>>>> There is a rank 367 which achieve 79.97% efficiency.
>>>>>
>>>>>
>>>>> i'm using Infiniband to connect 2 nodes. each node has 8G  
>>>>> memory  and dual
>>>
>>> AMD
>>>
>>>>> opteron 250.
>>>>> i just tried Intel Compiler + GOTO, it just got a 60%  
>>>>> efficiency  which have
>>>
>>> a
>>>
>>>>> large difference with my target.
>>>>> maybe i need to try Pathscale or PGI compiler.
>>>>> any suggestion?
>>>>> thanks a lot.
>>>>>
>>>>>
>>>>
>>>> Start with single node runs, then work you way up from there.
>>>>
>>>> Eric
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>>>>
>>>>
>>>
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