Speaker
Dr
Jose Hernandez
(CIEMAT)
Description
Establishing efficient and scalable operations of the CMS distributed
computing system critically relies on the proper integration,
commissioning and scale testing of the data and workfload management
tools, the various computing workflows and the underlying computing
infrastructure located at more than 50 computing centres worldwide
interconnected by the Worldwide LHC Computing Grid.
Computing challenges periodically undertaken by CMS in the past years
with increasing scale and complexity have revealed the need for a
sustained effort on computing integration and commissioning
activities. The Processing and Data Access (PADA) Task Force was
established at the beginning of 2008 within the CMS Computing
Programme with the mandate of validating the infrastructure for
organized processing and user analysis including the sites and the
workload and data management tools, validating the distributed
production system by performing functionality, reliability and scale
tests, helping sites to commission, configure and optimize the
networking and storage through scale testing data transfers and data
processing, and improving the efficiency of accessing data across the
CMS computing system from global transfers to local access.
This contribution will report on the tools and procedures developed by
CMS for computing commissioning and scale testing as well as the
improvements accomplished towards efficient, reliable and scalable
computing operations. The activities include the development and
operation of load generators for job submission and data transfers
with the aim of stressing the experiment and Grid data management and
workload management systems, site commissioning procedures and tools
to monitor and improve site availability and reliability, as well as
activities targeted to the commissioning of the distributed
production, user analysis and monitoring systems.
| Presentation type (oral | poster) | oral |
|---|
Primary authors
Dr
Alessandra Fanfani
(INFN and University of Bologna)
Dr
Andrea Sciaba
(CERN)
Dr
Ian Fisk
(FNAL)
Dr
James Letts
(UCSD)
Dr
Jose Hernandez
(CIEMAT)
Dr
Josep Flix
(PIC/CIEMAT)
Dr
Nicolo Magini
(CERN)
Dr
Stefano Belforte
(INFN, Sezione di Trieste)
Dr
Thomas Kress
(RWTH)
Dr
Vincenzo Miccio
(INFN and University of Milano)
