Summary of the 5th ILDG Workshop

Oreganized by Tsukuba and held on 3 December 2004

Note by A. Ukawa

11 sites participated: Edinburgh, Liverpool, Zeuthen, Marseille, Orsay, Boston, JLAB, FNAL,Utah, Adellaide, Tsukuba

Participants:

Edinburgh: R. Kenway, K. Bowler, A. Kennedy, C. Maynard, B. Joo

Liverpool: A. Irving, C. MacNeile, Z. Sroczynski

Zeuthen: K. Jansen, D. Pleiter

Marseille: L. Lellouch

Orsay: J.-P. Leroy, O. Brand-Foissac

Boston: R. Brower, J. Osborn

JLAB: C. Watson, R. Edwards, G. Flemming, D. Richards

FNAL: J. Simone, E. Neilsen

Utah: C. DeTar

Adellaide: P. Coddington

Tsukuba: A. Ukawa, T. Yoshie, M. Sato, T. Boku, K. Kanaya, S. Hashimoto, H. Matsufuru

Metadata WG

1. QCDml is now v1.1.

2. It was suggested that the WG discuss possible extension of QCDml to include observables.

Middleware WG

1. It was agreed that the WG works upon the following premises:

1) The task of the WG is to standardise services and client/server interfaces.

Client/Application writing is a local implementation issue left to collaborations.

2) If a collaboration A replicates configurations from the site of another collaboration B, it is the task of the collaboration A to inform this to the Replica Catalogue of collaboration B.

2. Progress in detailing the middleware which was made at the WG meeting in Edinburgh (25-27 October) was presented. The WG suggested, and the Workshop consented, that the target date for production of middleware is optimistically to be December 2005, and realistically to be June 2006.

3. Another WG meeting is planned between May and December 2005, possibly in Japan. This is expected to be a small meeting of those actively participating in the work.

4. It was requested, and the WG consented, that the ILDG middleware specifications be written up as a document.

Data Format issue

1. Discussions of the Metadata and Middleware WG’s on the data format was presented, and a proposal to explore a concensus along LIME was made.

2. It was proposed, and agreed upon, that the two WG’s continue work along this line, and reach data format version 1.0 by the end of February, 2004. .

ILDG implementation status

1. Germany, UK, USA and Japan presented the status of implementation. Germany now has prototype MDC and 4 Storage Elements set up. UK is modifying its QCDGrid to ILDG standards. In USA, JLAB implemented SRMv2 and a running RC, FNAL has a prototype MDC running and SRMv1 (to be updated to v2), BNL will install SRMv2. In Japan, prototype MDC and RC are being built.

2. Concerning CA, Germany uses GridKA, UK uses e-Science, USA uses DOE Science Grid , and Japan is considering several alternatives.

Data generation and sharing

1. Germany, UK, USA and Japan presented the status of data generation. See the presentation materials for details.

2. Issues of data sharing were discussed. Ongoing effort to coordinate configuration generation on the three QCDOC machines in UK and USA was mentioned. Discussions within SciDAC on possible guidelines was reported. The importance of international point of view was stressed. It was agreed upon that discussion on this issue to be continued at the ILFTNetwork meeting in Edinburgh in March 2005.

Target for 2005

It was agreed that the following be the target for 2005:

1. The Middleware and Metadata WG’s should reach data format version 1.0 by the end of February 2004.

2. Collaborations should produce middleware optimistically by December 2005, and realistically by June 2006.

3. Invite other countries to ILDG.

ILDG Board Chair for 2005

Akira Ukawa handed the chair to Richard Brower at the end of the meeting.

Next Workshop

1. 12 May, 2005. Time to be determined.