HEP computing in Korea
Section snippets
Introduction: Korean HEP activities
Large-scale enterprise experiments in which Koreans are involved now and will be in the future are Belle and K2K at KEK in Japan (in progress), CDF at Fermilab in USA (in progress), AMS on the International Space Station (ISS) (data taking starts in 2007), CMS at CERN in Europe (data taking starts in 2007) and other experiments, such as PHENIX at BNL, ZEUS at DESY, D0 at Fermilab, as well as ALICE, OPERA, KIMS, STAR etc. International Linear Collider experiment might start in mid 2010s.
Korean HEP institutions
Belle is an experiment at the KEK B-factory. Its goal is to study the origin of CP violation in B-meson Decays [1]. Korean Belle collaboration consists of Korea University, Yonsei University, Ewha University, Seoul National University, Sungkyunkwan University, Chonnam National University, Kyungpook National University and Gyeongsang National University.
The CDF experimental collaboration is committed to studying high energy particle collisions at the world's highest energy particle accelerator.
Korean HEP computing and Grid R&D
The Center for High Energy Physics (CHEP) at Kyungpook National University (KNU) is the place where most of these experimental activities are centered. Naturally the computing resources and R&D activities are based on the CHEP activities. CHEP is building a supercomputing center for HEP to be equipped with
• CPU > 1,000 • Disk cache 1,000 TB • Tape storage 3,000 TB • Networking > 20 Gbps • Technology in Grid • Time before 2007
Data grid R&D and collaborations in Korea are
• Domestic grid WG since 2001 • HEP/Physics
CHEP resources
Recently, CHEP has participated in the LCG Service Challenge 4 (SC4) as a Tier-2 (T2) center. SC4 started in June and ended on September 30. The minimum requirement for a Tier-1 or for a Tier-2 center for CMS experiment is
Tier-1 Tier-2 CPU 2.5 MSi2K 2.5 MSi2K Disk 1.2 PB 200 TB Mass storage 2.8 PB WAN in: 7.2 GBbps >1 Gbps out: 3.5 GBbps CPU node IO BW 1 Gbps 1 Gbps
At the moment CHEP has 230 kSi2K CPU, 51 TB hard disk and 45 TB mass storage system. These are about 25% of total requirement of a CMS Tier-2
Summary
Korean HEP computing is now in the phase from base configuration to more intensified system. HEP data grid R&D and network tests have been performed in collaboration with international and domestic partners. Enough bandwidth with new technology such as GLORIAD 10 Gbps are ready and will be up to 40 Gbps in 2008. To meet the demands in Korean HEP some HEP data grid collaborations and HEP working groups for networks are formed. They are supported by governments (MIC, MOST) and various groups of
Acknowledgements
The efforts and supports of the people involved in Korean HEP computing are gratefully acknowledged: MOST, KOSEF, MIC, KISTI, NCA, KISDI, KT/KOREN-NOC, IBM-Korea, CIES, ANF, APAN, KREONET.
This work is partly supported by CHEP(SRC) and by Kyungpook National University Research Fund, 2004.
References (5)
Physics Reports
(2002)