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

Experience with HEP analysis on mounted filesystems

21 May 2012, 17:50
25m
Room 914 (Kimmel Center)

Room 914

Kimmel Center

Parallel Computer Facilities, Production Grids and Networking (track 4) Computer Facilities, Production Grids and Networking

Speakers

Dmitry Ozerov (Deutsches Elektronen-Synchrotron (DE)) Martin Gasthuber (DESY) Patrick Fuhrmann (DESY) Yves Kemp (Deutsches Elektronen-Synchrotron (DE))

Description

We present results on different approaches on mounted filesystems in use or under investigation at DESY. dCache, established since long as a storage system for physics data has implemented the NFS v4.1/pNFS protocol. New performance results will be shown with the most current version of the dCache server. In addition to the native usage of the mounted filesystem in a LAN environment, the results are given for the performance of the dCache NFS v4.1/pNFS in WAN case. Several commercial vendors are currently in alpha or beta phase of adding the NFS v4.1/pNFS protocol to their storage appliances. We will test some of these vendor solutions for their readiness for HEP analysis. DESY has recently purchased an IBM Sonas system. We will present the result of a thourough performance evaluation using the native protocols NFS (v3 or v4) and GPFS. As the emphasis is on the usability for end user analysis, we will use latest ROOT versions and current end user analysis code for benchmark scenarios.

Primary authors

Dmitry Ozerov (Deutsches Elektronen-Synchrotron (DE)) Martin Gasthuber (DESY) Patrick Fuhrmann (DESY) Yves Kemp (Deutsches Elektronen-Synchrotron (DE))

Presentation Materials