UCL Discovery
UCL home » Library Services » Electronic resources » UCL Discovery

Measurement and simulation of the performance of high energy physics data grids.

Crosby, P.A.; (2004) Measurement and simulation of the performance of high energy physics data grids. Doctoral thesis , University of London. Green open access

[img] Text
U602816.pdf

Download (14MB)

Abstract

This thesis describes a study of resource brokering in a computational Grid for high energy physics. Such systems are being devised in order to manage the unprecedented workload of the next generation particle physics experiments such as those at the Large Hadron Collider. A simulation of the European Data Grid has been constructed, and calibrated using logging data from a real Grid testbed. This model is then used to explore the Grid's middleware configuration, and suggest improvements to its scheduling policy. The expansion of the simulation to include data analysis of the type conducted by particle physicists is then described. A variety of job and data management policies are explored, in order to determine how well they meet the needs of physicists, as well as how efficiently they make use of CPU and network resources. Appropriate performance indicators are introduced in order to measure how well jobs and resources are managed from different perspectives. The effects of inefficiencies in Grid middleware are explored, as are methods of compensating for them. It is demonstrated that a scheduling algorithm should alter its weighting on load balancing and data distribution, depending on whether data transfer or CPU requirements dominate, and also on the level of job loading. It is also shown that an economic model for data management and replication can improve the efficiency of network use and job processing.

Type: Thesis (Doctoral)
Title: Measurement and simulation of the performance of high energy physics data grids.
Identifier: PQ ETD:602816
Open access status: An open access version is available from UCL Discovery
Language: English
Additional information: Thesis digitised by Proquest
UCL classification: UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy
URI: https://discovery.ucl.ac.uk/id/eprint/1446874
Downloads since deposit
54Downloads
Download activity - last month
Download activity - last 12 months
Downloads by country - last 12 months

Archive Staff Only

View Item View Item