Hi Luke,
Sorry, should have been clearer but was rushing to get the HEPSysMan, the CentOS7+CVMFS+Singularity constraint is my first guess as what GridPP would need. Singularity for isolation, CVMFS for software, and CentOS7 for working Singularity.
Are more of your WNs going to move that way soon? It's probably enough for a test though. The one thing I'm not sure of is the HTCondor integration into WLCG for publishing and accounting.
Yours,
Chris.
Sent from my iPad
On 13 Jun 2017, at 11:43, L Kreczko <[log in to unmask]<mailto:[log in to unmask]>> wrote:
Hi Chris,
Seems I was a bit quick on pressing the send button. The slides you provide are indeed correct (mentioned in the slides I pointed to).
However, I cannot find the CentOS 7 constraint.
At Bristol we have 3 workers with CentOS 7, CVMFS and Singularity. I wonder if that's enough to start with (e.g restricting the CE submission to these nodes via a job router).
Cheers,
Luke
On 13 June 2017 at 11:04, L Kreczko <[log in to unmask]<mailto:[log in to unmask]>> wrote:
Hi Chris,
Indeed, this is something I wanted to bring up at the next GridPP technical meeting.
BTW: Did you mean https://indico.cern.ch/event/611296/contributions/2608194/attachments/1472567/2279255/HTCondor-CE-Progress-Report.pdf (slide 6+)?
Cheers,
Luke
On 13 June 2017 at 10:20, Chris Brew <[log in to unmask]<mailto:[log in to unmask]>> wrote:
Hi All,
On the topic of Tier 2 evolution, one interesting thing that I found out about at the European HTCondor workshop last week is that OSG offer a Hosted CE option to T3 sites with an existing batch farm.
It’s essentially a remote HTCondor-CE that has ssh (via keys) access to a submit machine. If anyone has a Local Cluster with CentOS7+CVMFS+Singularity, or is likely to in the near future then this looks like a very easy way to gridify it.
There’s a little bit about it here:
https://indico.fnal.gov/getFile.py/access?contribId=6&sessionId=12&resId=0&materialId=slides&confId=12973
Yours,
Chris.
--
Dr Chris Brew
Scientific Computing Manager
Particle Physics Department
STFC - Rutherford Appleton Laboratory
Harwell Oxford,
Didcot
OX11 0QX
+44 1235 446326<tel:%2B44%201235%20446326>
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*********************************************************
Dr Lukasz Kreczko
Research Associate
Department of Physics
Particle Physics Group
University of Bristol
HH Wills Physics Lab
University of Bristol
Tyndall Avenue
Bristol
BS8 1TL
+44 (0)117 928 8724<tel:+44%20117%20928%208724>
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A top 3 UK university with leading employers (2017)
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--
*********************************************************
Dr Lukasz Kreczko
Research Associate
Department of Physics
Particle Physics Group
University of Bristol
HH Wills Physics Lab
University of Bristol
Tyndall Avenue
Bristol
BS8 1TL
+44 (0)117 928 8724
[log in to unmask]<mailto:[log in to unmask]>
A top 3 UK university with leading employers (2017)
A top 5 UK university for research (2014 REF)
A world top 50 university (QS Ranking 2016)
*********************************************************
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