Hi Sam,
I think we should do a copy every hour. If we think it is too much doing
all the T2 <-> T1 every hour we can do one T1 every hour to/from each
T2. In this way we will have at least a measure for every T1 every 3 hours.
I'd also take care of deleting additional copies systematically since we
are not using any catalogue.
Is that ok with you?
cheers
alessandra
On 03/03/2011 10:08, Sam Skipsey wrote:
> Hi Alessandra,
>
> On 2 March 2011 17:56, Alessandra Forti<[log in to unmask]> wrote:
>> Hi Sam and Wahid,
>>
>> as agreed during the meeting I put 2GB files in
>>
>> srm://dcsrm.usatlas.bnl.gov:8443/srm/managerv2?SFN=/pnfs/usatlas.bnl.gov/atlasscratchdisk/user/uk/sonar-2G
> Works for me - copies at (around the sonar test value of) 1.1MB/s to
> GLA. Interestingly, the instantaneous rates that gridftp reports for
> these transfers are multiples of 512KB/s, which I've not seen before
> (the 1.1MB/s is an integral over 512,1024, 1536 and 2048 KB/s
> samples). This implies something about the rate limits on the
> individual channels bonded to provide our link (probably at the BNL
> end) - there are at least 4 links, each rate-limited to 512KB/s.
>
>> srm://srm.grid.sara.nl/pnfs/grid.sara.nl/data/atlas//atlasscratchdisk/users/uk/sonar-2G
> Works for me - copies at (around 8 times Sonar) 4.4MB/s to GLA (only
> one sample here, so...)
>
>> srm://srm-atlas.gridpp.rl.ac.uk/castor/ads.rl.ac.uk/prod/atlas/scratch/atlasscratchdisk/users/uk/sonar-2G
> Works for me - copies at (20x ! Sonar) 58MB/s to GLA (only one sample
> here, so..)
>
>> srm://bohr3226.tier2.hep.manchester.ac.uk/dpm/tier2.hep.manchester.ac.uk/home/atlas/atlasscratchdisk/users/uk/sonar-2G
>> srm://se03.esc.qmul.ac.uk/atlas/atlasscratchdisk/users/uk/sonar-2G
>> srm://svr018.gla.scotgrid.ac.uk:8446/srm/managerv2?SFN=/dpm/gla.scotgrid.ac.uk/home/atlas/atlasscratchdisk/users/uk/sonar-2G
>>
> not tried the copies the other way yet...
>
> Sam
>
>> Let me know if they are ok for you.
>>
>> cheers
>> alessandra
>>
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