[Fwd: Re: [Swift-devel] Re: swift-falkon problem... plots to explain plateaus...]

[Ioan Raicu]

NFS on SiCortex ( in the future, there will be PVFS, but that is not today)
GPFS on BG/P

Ioan

Ben Clifford wrote:
> On Tue, 1 Apr 2008, Ben Clifford wrote:
>
>   
>>> With this fixed, the total time in wrapper.sh including the app is now about
>>> 15 seconds, with 3 being in the app-wrapper itself. The time seems about
>>> evenly spread over the several wrapper.sh operations, which is not surprising
>>> when 500 wrappers hit NFS all at once.
>>>       
>> Does this machine have a higher (/different) performance shared file 
>> system such as PVFS or GPFS? We spent some time in november layout out the 
>> filesystem to be sympathetic to GPFS to help avoid bottlenecks like you 
>> are seeing here. It would be kinda sad if either it isn't available or you 
>> aren't using it even though it is available.
>>     
>
> >From what I can tell from the web, PVFS and/or GPFS are available on all 
> of the Argonne Blue Gene machines. Is this true? I don't want to provide 
> more scalability support for NFS-on-bluegene if it is.
>
>   

-- 
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Ioan Raicu
Ph.D. Candidate
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Distributed Systems Laboratory
Computer Science Department
University of Chicago
1100 E. 58th Street, Ryerson Hall
Chicago, IL 60637
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Email: iraicu at cs.uchicago.edu
Web:   http://www.cs.uchicago.edu/~iraicu
http://dev.globus.org/wiki/Incubator/Falkon
http://dsl-wiki.cs.uchicago.edu/index.php/Main_Page
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