Networks for participating in HEP experiments from Korea Youngdo Oh, Dongchul Son Center for High Energy Physics Kyungpook Nat’l Univ., Daegu, Korea APAN High Energy Physics Workshop 2003 January 21

Contents  High Energy Physics in Korea CHEP(Center for high energy physics) Korean HEP Data Grid  Korean Network Status KOREN/KREONET : Present and future APII/TEIN  Summary

CHEP - Center for High Energy Physics  A national center of excellence (Science Research Center: SRC) designated by the Korean MOST and supported by the KOSEF  The only Center of its kind in Korea: Most HE physicists and students are participating to the Center and are supported by the CHEP  Major research activities include oCMS at CERN oAMS at International Space Station (ISS) oBelle/K2K at KEK in Japan oCDF/Phenix in USA oHEP Data Grid for all of the above experiments

Korean HEP now and future  Large-scale enterprise experiments to which Koreans are committed now and in the future oBelle / KEK – Japan : in progress oK2K / KEK – Japan : in progress oCDF / Fermilab (USA) : in progress oAMS / ISS (MIT, NASA, CERN) : data taking starts in 2005 oCMS (CERN, Europe) : data taking starts in 2007 oLinear Collider Exp (either in Asia, Europe or USA) : around 2009

HEP Data Grid Development  Final goal of the Korean HEP Data Grid is the Tier-1 Regional Data Center of LHC-CMS experiment in Asia and this can be also used as regional data center for many other experiments (Belle, CDF, AMS, etc.)  Korean HEP Data Grid Working Group was formed under the auspices of the Grid Forum Korea (GFK) in October 2001  A proposal of the Korean HEP Data Grid has been submitted to the Ministry of Information and Communication March 16, 2002  It is approved by KISTI / MIC on March 22, 2002 and in progress now o210 Mwons(ca. US$168k) in 2002  National Computerization Agency (NCA) supports CHEP with two international networking utilization projects for HEP both of which are related to HEP Data Grid : Europe and Japan/USA o287 Mwons total (ca. US$230k) in 2002

HEP Data Grid Development  KNU and SNU host one EDG testbed each and are running at a fundamental level (July 2002) oApplication of the EDG testbed to currently running experiments: Configuration  EDG testbed for CDF data analysis  EDG testbed for K2K data analysis  EDG testbed for CMS data analysis  CHEP is discussing with iVDGL collaboration (since August 2002) oCHEP will set up a CMS MC production testbed soon (Under the CMS Project named Data Challenge 2003)

1. CMS Tier-1 Regional Center (CERN) 4. Belle Exp (Japan) 5. K2K Exp (Japan) 3. CDF Grid- KCAF (USA) 2. AMS Regional Center (CERN) 6. PHENIX Grid (USA) Data Grid Cluster Korea U Seongkyunkwan U Chonnam N U Gyeoogsang N U Konkuk U Ewha W U Dongshin U KBSI … Other users CHEP Kyungpook N U Seoul N U Yonsei U Participation of Institutions in the HEP Data Grid Project

Distributed Resources (2002) SNU 6 CPUs Yonsei 1 CPU SKKU 1 CPU Ewha WU 1 CPU Chonnam 1 CPU Konkuk U 1 CPU APII TEIN … CHEP 142 CPUs ~50TB Storage Suwon Seoul XP Daegu XP Busan XP Gwangju XP Daejeon XP KOREN/NOC 64 CPUs US Fermilab Korean CDF 10 CPUs Dongshin 1 CPU KREONET KORNET CERN Korean 1 CPU Japan KEK Korean Belle 12 CPUs 45Mbps 10Mbps 8Mbps : KOREN Backbone

SNU EDG Testbed CHEP/KNUStorage and network equipment

Korean Networks  Domestic Infrastructure –KOREN –KREONET  International R&D Networks – APII/TEIN

KOREN  Korea Advanced Research Network  A non-profit advanced research network  Funded by MIC (Ministry of Information and Communication) and KT since 1995  To provide high-performance networking services  To supports the R&D activity of new technology and applications  6+1 router nodes across the nation based upon ATM technology with advanced services deployed  37 member Institutes

History of KOREN  1st Phase ( ’ 95~ ’ 97): ATM Service oLaunched KOREN (95) oBuilt optical backbone between Seoul and Daejeon  2nd Phase ( ’ 98~2001): IP Service over ATM oOpened the Network Operation Center (NOC) oInterface with APII Testbed: JP/SG/US  Deployed 6 GigaPoP  Interfaced with other domestic R&D networks  (HPCNet/KREONET2 (NOC:KISTI)  3rd Phase (2002~2005): Optical Internet based on DWDM oBackbone : Tens of Giga bps oAccess network : several Giga bps

KREONET  Research Network formerly supported by the MOST, now by MIC and operated by KISTI  Members: ~200 institutions (mostly by 45 Mbps)  Major research institutions (universities and research institutes) are networked  Own the APII link to US (45 Mbps)  And its own links to Japan (imnet) and other countries

KREONET  Future Plan (2003) oAPII link to US(StarTap): upgrade to 310 Mbps oDomestic  Supersinet(Korea) in Daejeon: backbone – 10 Gbps  Link to major National Research Institutes  5 Gbps: Daejeon – Seoul  2.5 Gbps: Daejeon – 9 major universities in Daegu(Kyungpook), Busan, Pohang(POSTECH), Gwangju, Suwon(SKKU), etc.  1 Gbps: Daejeon – Other 8 major universitites not covered above

KOREN: Topology  ATM based Infrastructure  6 GigaPoPs  1 eXchange Point(XP) 2.5Gbps  40 Gbps (soon in 2003) 155Mbps Exchange Point Core Node Seoul Daejon Gwangju Busan Daegu Japan Singapore Europe for TEIN 8M 2M 45M USA 10M Suwon KREONet Seoul XP 1 Gbps SNU, KAIST NCA 1 Gbps Based on the presentationa by S I Byun at the 1 st Int. Workshop for HEP Data Grid at Kyungpook Nat’l Univ.  45 Mbps  1 Gbps  8 Mbps

APII Testbed  Korea operates three APII Testbeds  KR-JP APII Testbed oStarted with 2Mbps in April 1998 oExpanded to 8Mbps in July 1999 oWill be expanded to 45Mbps or 155Mbps (2003)  KR-SG APII Testbed o2Mbps cables deployed in late 1999 oWill be expanded to 4~8Mbps (2003)  KR-US APII Testbed/KREONet2 o45Mbps link to STAR TAP in May 2001

TEIN  TEIN : Trans-Eurasia Information Network oconnects Asia and European research networks  History oEndorsed as a new project of ASEM in the 3 rd summit meeting( )  Korea, EC and Singapore proposed it together o2Mbps link was initially opened ( )  Link between Korea(KOREN)-France(RENATER 2)  Current Bandwidth : SCR10Mbps / PCR 20Mbps (2002.3)

TEIN Connectivity  European Countries connected to the TEIN o30 countries and more than 3000 Research and Education Institutes are connected to TEIN via GEANT  Asian Countries (10 countries) Austria, Belgium, Bulgaria, Switzerland, Cyprus, Czech Republic, Germany, Denmark, Estonia, Spain, Finland, France, Greece, Hungary, Ireland, Israel, Iceland, Italy, Lithuania, Luxembourg, Latvia, Netherlands, Norway, Poland, Portugal, Romania, Sweden, Slovenia, Slovak Republic, United Kingdom Austria, Belgium, Bulgaria, Switzerland, Cyprus, Czech Republic, Germany, Denmark, Estonia, Spain, Finland, France, Greece, Hungary, Ireland, Israel, Iceland, Italy, Lithuania, Luxembourg, Latvia, Netherlands, Norway, Poland, Portugal, Romania, Sweden, Slovenia, Slovak Republic, United Kingdom China, Hong Kong, Indonesia, Japan, Korea, Malaysia, Philippines, Singapore, Thailand, Taiwan China, Hong Kong, Indonesia, Japan, Korea, Malaysia, Philippines, Singapore, Thailand, Taiwan

 APII Testbed : Korea – Japan/Singapore/USA  TEIN : Asia – Europe APII/TEIN: Network Connectivity

Belle Experiment –At present, data of 30 Tbytes/year are being collected: 0.3 TB/day It is approxmately 5~15 Mbytes/s, meaning 40 ~120 Mbps Production and share of Monte Carlo simulated data (~3 times of real data) among Korea-Japan collaborators (file transfer) Therefore, 120 Mbps~360 Mbps is needed (24 hrs/day operation, 25 millions seconds in total operation per year) –After 2006, we expect collecting data at 220GHz amounting 2 PB data/year Koreans expect processing 30% of data (600 TB/year)  4800 Tb/30 Ms = 160 Mbps Monte Carlo data production and share with Japan (approx 1.8 PB/year)  480 Mbps Therefore, we need 640 Mbps between Japan-Korea for this experiment K2K Experiment –Until 2001, we have approx. 830 GB of unprocessed data –Processed data size is 3.1 TB –Expect the same size of data in 2003 –Monte Carlo Simulation Data is about 1.6TB –We need 2~3 Mbps SuperKamiokande(Super-K) Experiment (Kamioka-near Toyama) –Collects approx. 27 Gbytes of data, needs 8*27 Gb/86.4 ks = 2.2 Mbps –About the same size of Monte Carlo data are produced –We need 5~6 Mbps Bandwidth Requirements for HEP

Bandwidth Requirements for HEP (continues) Summary for Korea-Japan connection –130~370 Mbps by 2006 –650 Mbps after 2006 When Genkai is extended to USA via Korea-Japan – CDF Experiment at Fermilab Run IIa( ) 500 Tbytes/year and Run IIb(after 2004 ) > 3 Pbytes (after 2004) Before 2004 : 10% processing (50 TBytes/year) : ~ 13 Mbps After 2004 : 10% processing (300 TBytes/year) : ~ 76 Mbps Monte Carlo Data Production and Transfer: twice the above Before 2004 : 40 Mbps After 2004 : 230 Mbps –CMS (Europe) Monte Carlo Data Production and share with USA CMS Collaborators 15 years from 2003, we share 1 Petabytes/year = 800 Mbps is needed –Summary of Bandwidth requirement Year Between Korea-Japan Mbps Between Japan-USA Mbps (for Korean traffic)

 Excellent network supports from APAN(-KR) oDomestic KOREN/KREONET are the Advanced Network for Research  To be upgraded to GbE (6 sites) with 40 Gbps backbone oAPII for Korea-US via KREONET (45 Mbps  310 Mbps) oKorea-US : 10Gbps  IEEAF link ( Link & Access Committee in APAN-KR is working ) oTEIN for Korea-Europe to be upgraded to > 45 Mbps  GbE or 10 Gbps? oAPII for Korea-Japan (now 8 Mbps)  64~155 Mbps  Or expect GbE (2 Gbps) with the Hyeonhae/Genkai Project APII  So far the HEP Data Grid project has gotten excellent supports from MIC/KISTI/NCA/KOREN-NOC and KT/IBM-Korea/CIES, etc. Summary & Network Activities ( 2003 )

 HEP Data Grid is considered for most of Korean participating HEP experiments  Domestic HEP Data Grid is now in progress and in very good collaboration internationally with Europe/US/ Japan counterparts  Grid technologies are deployed in establishing testbeds for EU Data Grid and the Korean HEP will be collaborating with iVDGL as well as CMS MC production team  Minimal bandwidth requirements for the HEP research is o2.5 Gbps over Korea-Japan-USA, 2.5 Gbps over Korea- Europe