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ILDG Status in Japan

Lattice QCD Archive(LQA)

a gateway to ILDG Japan Grid

HEPNet-J/sc

an infrastructure for Japan Lattice QC

D Grid

A. UkawaCenter for Computational SciencesUniversity of Tsukuba

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LQA Overview

stores gauge configurations and makes them available to lattice community world-wide

Open since February 2004/maintained by CCS will be a Japan site of ILDG configurations

CP-PACS Nf=2 configurations already available

CP-PACS/JLQCD Nf=2+1 configurations in near future

Access policy no authentication requires registration to download acknowledge downloading from LQA (cite relevant papers) when configurations ar

e used for publications

http://www.lqa.ccs.tsukuba.ac.jp/

http://www.lqa.ccs.tsukuba.ac.jp/Nf21config.html

http://www.lqa.ccs.tsukuba.ac.jp/CPPACSconfig.html

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CP-PACS/JLQCD Nf=2+1 configurations

RG-improved glue + Clover quark with NP Csw

three lattice spacings a=0.122,0.100,0.07 fm /

10 (Kud,Ks) combinations

6000 – 8000 trajectory/beta,(Kud,Ks)

Will be released 6 months after publication of spectrum/quark mass paper

Lattice conference presentation of heavy quarks and eta’ (effectively

Lat’06)

In future, lighter ud quark configurations will be added using PACS

-CS3.04.06.08.0

m

m

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LQA details

Architecture a prototype implementation of ILDG standard

XML files still in the old QCDML draft v4.0/conversion to the

official version QCDml1.1 is finished/will be implemented soon

file format also based on a previous proposal/conversion to the

official v1.0 soon

enables interactive search/implementation of middleware

Web service standards (when they are ready/approved)

user

MDC

metadata

server-side

client

webbrowser

html WSquery

Tomcat servlet Xindice

http://www.lqa.ccs.tsukuba.ac.jp/

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LQA search page

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LQA statistics

Statistics : example of June 2005 Number of registered users 57

Access to the top page 180 (per month)

Access to the search page 23 (per month)

#configs downloaded 2400 (per month)

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HEPNet-J/sc Overview

Japanese domestic LQCD

network uses SuperSINET peer-to-p

eer 1Gbps private network

connections

major LQCD sites in Japan

are connected (see figure)

enables to construct a ded

icated network for LQCD in

Japan

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HEPNet-J/sc Status (1)

Major machines and upgrade plan

SR8000/F11.2TFlops

24+ TflopsKEK

TsukubaCP-PACS0.6TFlops

PACS-CS14.3 Tflops

OsakaSX-5/128M81.3TFlops 24+ Tflops

Hiroshima SR11000　 0.7TFlopsKyoto SX-5 → 　 1+TFlopsKanazawa PC-ClustersTsukuba VPP5000 0.8TFlops

(upgrade in a few years)

JAMSTEC

Earth Simulator

2.7% of 40TFlops (This year)

the Nf=2+1 project uses a part of these machines

March ‘06

June ‘06

March ‘06(not QCD dedicate)

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HEPNet-J/sc Status (2)

shares configurations and other lattice data via file mirroring

total 60TB distributed over 6 sites used by several lattice groups in Japan

CP-PACS, JLQCD, QCD-Taro, Kanazawa etc.

production and measurement for the Nf=2+1 QCD project utilizes the file sharing very effectively

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HEPNet-J/sc Future Plan

an issue size of one partition is limited to 1-2 TB, but size of data se

ts (for one project) easily exceeds the limit. Then, data are

distributed over many disks

uniform file system based on Grid Technology is required, s

uch as SRB (Storage Resource Broker)

Gfarm (Grid Data Farm)

will work as a backbone of LQA or ILDG-Japan

Grid

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ILDG related activity

International Lattice Field Theory Network (ILFT Network) USA/UK/Germany/Italy/Japan Bi-annual workshops

3-6 October 2005 at JLAB, USA 8-11 March 2006 in Hayama, Japan

Exchange of people This year’s Special event :

“Perspectives in Lattice QCD” A lecture school in Nara, Japan, organized by Y. K

uramashiOctober 31-November 11 2006

http://www.ccs.tsukuba.ac.jp/workshop/ilft05/