1. ByungGu Cheon Sungkyunkwan University (On the behalf of HEP DataGrid Working Group) 22~23 August, 2003 2 nd Int. Workshop on HEP Data Grid Kyungpook National Univ., Daegu BELLE Data Grid in Korea 이 프레젠테이션에는 수행 항목을 만드는 청중 토론이 포함되어 있습니다. 프레젠테이션 하는 동안 PowerPoint 를 사용하여 수행 항목을 확인합니다. 슬라이드 쇼에서 마우스 오른쪽 단추를 누릅니다. [ 회의록 만들기 ] 를 선택합니다. [ 할 일 ] 탭을 선택합니다. 제안되는 대로 수행 항목을 입력합니다. 이 상자를 없애려면 [ 확인 ] 을 누릅니다. 프레젠테이션 끝에 요점을 입력한 수행 항목 슬라이드를 자동으로 만들어 줍니다.

2. Why does BELLE ? outline KEKB/BELLE in general BELLE Computing & Data Grid KorBELLE* Data Grid Summary & Plan * KorBELLE : Korean BELLE group To study matter-antimatter asymmetry in B meson decays

3. KEKB / BELLE BELLE detector 3.5 GeV e + & 8 GeV e - Asymmetric Collider 3km circumference, 11mrad Xing angle L max = 1.06 X 10 34 cm –2 s –1 (world record)  Ldt (6/99-6/03) = 158 fb –1 @{  (4S)+off(~10%)} (140fb -1 : 1.52x10 8 BB pairs) Super-KEKB(L > 10 35 cm –2 s –1 ) project has been prepared !! KEKB Collider KEK, Tsukuba-city,JAPAN ~350 scientists, 55 institutions, many nations

4. BELLE 2003 highlights 54 abstracts submitted to LP2003 (Fermilab) CPV and Beauty related  time-dependent CP measurements o update of B  J/  K S (  1 ) o with B  J/     ), D *+        K S (  1 )  new method for  3 : Dalitz plot analysis o B  D 0 K + {D 0  K S    - }  evidence/observation o B  K ( * ) l + l -,    , D + D -,     Charm related  new processes/particles o new excited D S + states o new charmonium o first radiative: D 0    different of CP lifetime in D 0 (y CP )

5. BELLE 2003 highlights First Indication of Beyond Standard Model in quark sector See more detail at http://belle.kek.jp 140 fb -1 Theoretically cleanest example: In the absence of New Physics, S= sin2  1

6. BELLE analysis framework The only framework for all processing stages (from DAQ to final analysis) Event parallelism on SMP (1995~)  Using fork (for legacy Fortran common blocks) Event parallelism on multi-compute servers (dbasf, 2001~) User analysis code/reconstruction code are dynamically loaded. = BASF =

7. Data storage : 0.5 ~ 3PB  Raw Data : ~200trig*50KB*240days  ~200TB  DST,MDST,MC(x10MDST) Data CPU speed : few ~ 20 TFLOTS  DST/Skim (re-)processing, MC prod., Physics analyses  47 4CPU 500MHz Sparc (Solaris2.7)  History of PC-farm (Linux RH7.3) CPU increment  ’99/06: 16 4CPU 500MHz Pen III  ’00/04: 20 4CPU 550MHz Pen III  ’00/10: 20 2CPU 800MHz Pen III  ’00/10: 20 2CPU 933MHz Pen III  ’01/03: 60 4CPU 700MHz Pen III  ’02/01: 127 2CPU 1.26GHz Pen III  ’02/12: 113 2CPU Athlon 2000  ’03/03: 84 2CPU 2.8GHz Pen IV Hard to manage the needs of over-capacity  How to slove in the future  Grid project !! BELLE Computing Needs  Ldt Computing resource

8. Status of BELLE Data Grid BELLE is now working with several research groups on Data Grid.  Austrelia/Korea Groups  whoelse?? For research purpose only Eventually for us to use the vast resource on computers outside BELLE, we may distribute our data.

9. Computing for KorBelle Data Grid Data processing resource @KNU  Computing node : 10 2CPU 1.7GHz AMD  Batch job server : 1 2CPU 1.7GHz AMD Data storage : 5 TB @KNU OS/c++ : RedHat 7.3 w/ gcc3.0.4 Latest Belle library version(20030716) Batch job system : OpenPBS-2.3 KorBelle PC cluster software  Job distribution system developed by jhkim@SKKU Other KorBelle institutions have own resources.  SKKU : 550GB Raid storage & 4 2CPU 1GHz Pen III

10. Job Distribution System Purpose  Fast run time  MC prod. factory  HEP Data Grid R&D KorBELLE PC cluster  Based on gcc3.0.4  All nodes have BASF code & Linux/Globus  V1.0/V2.0 KorBELLE PC cluster V2.0 QQ (EvtGen) GEANT (DetSim) SkimAnalysis QQConfig QQProce ss Node01 RUNConfig RUNProcess Node02 Node03 Node04 Batch Job System KNU Data Storage (Real/MC data) Belle-lib server (BASF)

11. KorBELLE PC cluster test 200K MC events  B  J/  K S decays Several distributions were compared with different situation.  mass, momentum, etc The cluster run-time  ~1/N * single node KorBELLE JDS works fine. J/ mass distribution

12. KorBELLE Data Grid Globus Toolkit v2.2 has been adopted.  Belle-lib(BASF) has been performed with it.  Gsim event display test was successful.  Linkage of JDS is under study. CA (Certification Authority)  Primitive CA is functional to allow accessing to GT. Belle-lib(BASF) server users job Job Distribution System Batch Job System NODES Globus Toolkit

13. Gsim event display under GT 1. Script for CA to access GT environment 2. Interactive executable under GT env. 1 2 BASF outputs

14. KorBELLE Data Grid

15. Gridbus project @Melbourne Australian group has been working on Grid prototype for Belle physics analyses.

16. Summary & Plan BELLE starts thinking of Data Grid as official. Austrelia/Korea group have been involved in it. KorBELLE JDS has been established for it. We have adopted GT v2.2 for the testbed. Grid-base GUI software will be prepared for easy use/access.

17. KorBelle PC cluster V1.0

18. GbE Network : KNU-KEK 1Gbps