Sep 2 – 9, 2007
Victoria, Canada
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Lessons Learnt From WLCG Service Deployment

Sep 3, 2007, 2:00 PM
20m
Carson Hall B (Victoria, Canada)

Carson Hall B

Victoria, Canada

oral presentation Computer facilities, production grids and networking Computer facilities, production grids and networking

Speaker

Dr Jamie Shiers (CERN)

Description

This talk summarises the main lessons learnt from deploying WLCG production services, with a focus on Reliability, Scalability, Accountability, which lead to both manageability and usability. Each topic is analysed in turn. Techniques for zero-user-visible downtime for the main service interventions are described, together with pathological cases that need special treatment. The requirements in terms of scalability are analysed, calling for as much robustness and automation in the service as possible. The different aspects of accountability - which covers measuring / tracking / logging / monitoring what is going on – and has gone on - is examined, with the goal of attaining a manageable service. Finally, a simple analogy is drawn with the Web in terms of usability - what do we need to achieve to cross the chasm from small-scale adoption to ubiquity?

Summary

A summary of the key lessons learnt from deploying WLCG production services, with a
focus on Reliability, Scalability, Accountability, which lead to both manageability
and usability.

Submitted on behalf of Collaboration (ex, BaBar, ATLAS) WLCG

Primary author

Dr Jamie Shiers (CERN)

Presentation materials