Optimised access to user analysis data using the gLite DPM

Computer Science – Distributed – Parallel – and Cluster Computing

Scientific paper

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

8 pages, 9 figures, preprint for 17th International Conference on Computing in High Energy and Nuclear Physics

Scientific paper

10.1088/1742-6596/219/6/062066

The ScotGrid distributed Tier-2 now provides more that 4MSI2K and 500TB for LHC computing, which is spread across three sites at Durham, Edinburgh and Glasgow. Tier-2 sites have a dual role to play in the computing models of the LHC VOs. Firstly, their CPU resources are used for the generation of Monte Carlo event data. Secondly, the end user analysis data is distributed across the grid to the site's storage system and held on disk ready for processing by physicists' analysis jobs. In this paper we show how we have designed the ScotGrid storage and data management resources in order to optimise access by physicists to LHC data. Within ScotGrid, all sites use the gLite DPM storage manager middleware. Using the EGEE grid to submit real ATLAS analysis code to process VO data stored on the ScotGrid sites, we present an analysis of the performance of the architecture at one site, and procedures that may be undertaken to improve such. The results will be presented from the point of view of the end user (in terms of number of events processed/second) and from the point of view of the site, which wishes to minimise load and the impact that analysis activity has on other users of the system.

No associations

LandOfFree

Say what you really think

Search LandOfFree.com for scientists and scientific papers. Rate them and share your experience with other people.

Rating

Optimised access to user analysis data using the gLite DPM does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Optimised access to user analysis data using the gLite DPM, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optimised access to user analysis data using the gLite DPM will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFWR-SCP-O-423703

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.