ScotGrid Technical Meeting

Wednesday 16 Apr 2014, 10:55 → 12:00 Europe/London

Other Institutes

Gareth Roy (University of Glasgow)

Present:
==================================================
Ewan Steele
Oliver Smith
Andrew Washbrook
David Crooks
Gang Qin
Sam Skipsey
Gareth Roy


Tickets:
==================================================
Durham:
-----------
- Responded to ticket by linking to previous EMI-3 ticket
- Discussion about ARC-CE and issues with jobs submission

ECDF:
------------
- EMI-3 Upgrade plans
- Issues with new Cream-CE NFS pool accounts not being accesible at job creation

Glasgow:
-------------
- BNL Ticket, poor performance likely caused by verifiying disk
- EMI-3 Update plans
- APEL migration


Research
==================================================
- No communication from Codebase
- Discussion on issues associated with ARC and SLURM


Chat Log:
==================================================

Samuel Cadellin Skipsey: (16/04/2014 11:02)

The are active plumbers plumbering.

Even as we speak

Kashif did close the old one.

There's a discussion about SLURM for VOs in the multicore TF this week

I shall link slides...

https://indico.cern.ch/event/305623/contribution/0/material/slides/0.pdf

(On the SLURM thing: my understanding is that the "traditional" approach to doing VOs for Grid stuff is to have 1 partition per fairshare group/VO ?)

Ewan: (11:11 AM)

yes thats how we have it in our development but arc will not allow/complains about overlapping queues

and where arc says queues read some horrid concoction of queues and subclusters

Samuel Cadellin Skipsey: (11:12 AM)

Hm

That looks like the ARC internal model of queues is not well suited to SLURM

Ewan: (11:13 AM)

yeah thats my thoughts... it is only a warning but I've yet to experiment as the wms still wont submit on our development queue

I'm an RA so if you ever need me to look at something I can

Samuel Cadellin Skipsey: (11:14 AM)

Where have you tested submission to ARC? Locally, I assume?

Would you like me to have a go from glasgow?

Ewan: (11:15 AM)

locally and with the scotgrid vo via the wms... if you want to test it your more than welcome. It would be good to see some output

Samuel Cadellin Skipsey: (11:15 AM)

The need for output was what I was thinking of.

the WMS is not particularly helpful in telling you why it is sad with a CE

If you chuck me your test script for submitting to the ARC, I can have a go from a suitably ARC-Client'd service here.

Ewan: (11:21 AM)

ok you should be able to send any job to it using the glite tools with a voms-proxy-init -r --voms

Samuel Cadellin Skipsey: (11:27 AM)

On that note, the Machines Instrumentation TF would love to talk to a site with SLURM.

Ewan: (11:28 AM)

we already get it from the nordugrid repo

11:00 → 11:15 Tickets

11:15 → 11:25 Research Updates

11:25 → 11:35 AOB