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

[Ben Clifford]

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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