21-25 May 2012
New York City, NY, USA
US/Eastern timezone

Performance of Standards-based transfers in WLCG SEs

22 May 2012, 13:30
4h 45m
Rosenthal Pavilion (10th floor) (Kimmel Center)

Rosenthal Pavilion (10th floor)

Kimmel Center

Poster Distributed Processing and Analysis on Grids and Clouds (track 3) Poster Session

Speaker

Sam Skipsey (University of Glasgow / GridPP)

Description

While, historically, Grid Storage Elements have relied on semi-proprietary protocols for data transfer (gridftp for site-to-site, and (rfio/dcap/other) for local transfers) ), the rest of the world has not stood still in providing its own solutions to data access. dCache, DPM and StoRM all now support access via the widely implemented HTTP/WebDAV standard, and dCache and DPM both support NFS4.1/pNFS, which is partly implemented in newer releases of the linux kernel. We present results of comparing the performance of these new protocols against the older, more parochial protocols, both on DPM and StoRM systems. The next-iteration ATLAS data movement tool, Rucio, is used for some of these tests, which include examination of interoperability between the DPM and StoRM sites, as well as internal transfer performance within each site.

Primary author

Sam Skipsey (University of Glasgow / GridPP)

Co-authors

Christopher John Walker (University of London (GB)) Graeme Andrew Stewart (CERN) Matthew Doidge (Lancaster University) Ricardo Brito Da Rocha (CERN)

Presentation Materials