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Subject:

Re: Free Space For DATADISK requirements STEP09

From:

brian davies <[log in to unmask]>

Reply-To:

Testbed Support for GridPP member institutes <[log in to unmask]>

Date:

Thu, 21 May 2009 16:54:19 +0100

Content-Type:

text/plain

Parts/Attachments:

Parts/Attachments

text/plain (67 lines)

Hi Chris,
It is because you have a low number of CPUs. ATLAS have not seen a
high number of CPUs. Perhaps ATLAS/I have the amount wrong. What
number of slots can atlas expect to get to use during STEP ( ie wht is
the size of your farm and the fairshare?) We appear to benever have
seen in production role more than 60 slots.
Brian

2009/5/21 Chris Curtis <[log in to unmask]>:
> Hi -
>
> Glad to see that Birmingham got a smiley face!
>
> Forgive my ignorance, but is there any reason as to why Birmingham is only
> slated for 3TB of data?  We have a lot more which could be used - is there
> another factor we can help with?
>
> Cheers,
>
> Chris
>
> On Thu, 21 May 2009, Davies, BGE (Brian) wrote:
>
>> Below are the requirements for empty space in DATADISK space tokens for
>> atlas for STEP09
>> It appears that sites do not have the full capacity needed by ATLAS, do
>> sites have spare space hidden away for ATLAS?
>>
>>
>>
>> GLA  48TB,has 38 atm
>> LIV  27TB,has 20 atm
>> RHUL 24TB,has (down atm)
>> OX  21TB,has 3 atm
>> MAN 12TB,has 16 :)
>> RALPPD 30TB,has (down atm)
>> BHAM 3TB,has 13 :)
>> QMUL 24TB,has 6.5 atm
>> LANCS 33TB,has 8 atm
>> SHEF 6TB,has 16 :)
>> CAM 6TB,has 3 atm
>> UCL 6TB,has 23 :)
>>
>> Could sites also say if they could push to doing half these amounts IF
>> they  reduced GROUDISK and LOCALGROUPDISK down to .5TB and put the
>> released capacity into DATADISK
>> I also need to look at MCDISK but here site need free between 0.5 and
>> 3.5TB of diskspace free at the start of STEP09 ( however ATLAS plan to
>> puit new datasets ontu soite sin the next 10 days so don't think about
>> taking space from  MCDISK to put into DATADISK yet  until ATLAS-UK have
>> worked out how much space you need in MCDISK.
>>
>> Brian
>>
>>
>
> --
> West 326
> Physics and Astronomy
> University of Birmingham
> Edgbaston
> Birmingham
> B15 2TT
>
> (Office) 0121 414 4700
> (Mobile) 0798 666 1959
>

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