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CC-J : Computing Center in Japan for RHIC Physics. Takashi Ichihara (RIKEN and RIKEN BNL Research Center ) Presented on 28/09/2000 at RBRC Review at BNL. Contents. 1. Overview 2. Concept of the system 3. System requirement 4. Other requirement as a regional center

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cc j computing center in japan for rhic physics

CC-J : Computing Center in Japanfor RHIC Physics

Takashi Ichihara

(RIKEN and RIKEN BNL Research Center)

Presented on 28/09/2000 at RBRC Review at BNL

contents
Contents

1. Overview

2. Concept of the system

3. System requirement

4. Other requirement as a regional center

5. Project plan and current status

6. Activity since last review

7. Plan in this year

8. Current Configuration of the CC-J

9. Components of the CC-J (photo)

10. CC-J Operation

11. Summary

phenix cc j overview
PHENIX CC-J : Overview
  • PHENIX Regional Computing Center in Japan (CC-J) at RIKEN wako
  • Scope
      • Principal site of computing for PHENIX simulation
        • PHENIX CC-J is aiming at coveringmost of the simulation tasks of the whole PHENIX experiments
      • Regional Asian computing center
      • Center for the analysis of RHIC spin physics
  • Architecture
      • Essentially follow the architecture of RHIC Computing Facility (RCF) at BNL
  • Construction
      • R&D for the CC-J started in April ‘98 at RBRC
      • Construction began in April ‘99 over athree years period
      • 1/3 scale of of the CC-J started operation in June 2000
system requirement for the cc j
Annual Data amount

DST 150 TB

micro-DST 45 TB

Simulated Data 30 TB

Total225 TB

Hierarchical Storage System

Handle data amount of 225TB/year

Total I/O bandwidth: 112 MB/s

HPSS system

Disk storage system

15 TB capacity

All RAID system

I/O bandwidth: 520 MB/s

System Requirement for the CC-J
  • CPU ( SPECint95)
    • Simulation 8200
    • Sim. Reconst 1300
    • Sim. ana. 170
    • Theor. Mode 800
    • Data Analysis 1000
    • Total 11470 SPECint95
    • ( = 120K SPECint2000)
  • Data Duplication Facility
    • Export/import DST, simulated data.
other requirements as a regional computing center
Other Requirements as a Regional Computing Center
  • Software Environment
    • Software environment of the CC-J should be compatible to the PHENIX Offline Software environment at the RHIC Computing Facility (RCF) at BNL
      • AFS accessibility (/afs/rhic)
      • Objectivity/DB accessibility
  • Data Accessibility
    • Need exchange data of 225 TB/year to RCF
      • Most part of the data exchange will be done by SD3 tapecartridges (50GB/volume)
      • Some part of the data exchange will be done over theWAN
        • CC-J will use Asia-Pacific Advanced Network (APAN) for US-Japan connection
          • http://www.apan.net/
        • APAN has currently 70 Mbps bandwidth for Japan-US connection
        • Expecting 10-30% of the APAN bandwidth (7-21 M bps) can be used for this project:
          • 75-230 GB/day ( 27 - 82 TB/year) will be transferred over the WAN
activity since the last review in these 15 months
Activity since the last review (in these 15 months)
  • Construction of the CC-J at phase 1,2
    • Phase 1 and 1/3 of Phsae 2 hardware installed
      • High Performance Storage System (HPSS) with 100 TB Tape library
      • CPU farm of 128 processors (about 4000 SPECint95)
      • 3.5 TB Raid Disk , Two Gigabit Ethernet Switches, etc.
      • A tape drive and a workstation installed at BNL RCF for tape duplication
    • Software environment for PHENIX computing : established
      • AFS local mirroring, Linux software environment, LSF etc : ready to use
  • CC-J operation
    • CC-J started operation in June 2000.
      • 40 user’s accounts created so far.
    • 100 K event simulation (130 GeV/nucleon, Au+Au min. bias) of
      • (1)retracted geometry, zero filed, (2) standard geometry, zero filed,
      • (3)full 2D field field, (3) full 3D field,(3) half 3D filed : in progress
    • Real raw data (2TB) of PHENIX experiment transferred to CC-J via WAN
      • Large ftp performance (641 KB/s = 5 Mbps) was obtained (RTT = 170 ms)
      • data analysis by regional users are in progress.
plan in this year
Plan in this year
  • Hardware upgrade
    • 6 TB Raid disk, tape drives and cached disks for HPSS
    • 64 Linux CPU farms, SUN servers for data mining & NFS serving
  • System development
    • Data duplicating facility (to be operational)
    • Objectivity/DB accessing method (to be established)
  • Simulation production
    • 100k Au+Au simulations (continuing)
    • Other simulations to be proposed by PHENIX PWG (spin etc.)
  • Data Analysis
    • Official Data Summary Tape (DST) will be produced at RCF soon
    • DST : transfer to the CC-J via the duplication facility (by tape)
    • Micro-DST production (data mining ) for data analysis
cc j operation
CC-J Operation
  • Operation, maintenance and development of CC-J are carried out under the charge of the CC-J Planning and Coordinate Office (PCO).
summary
Summary
  • The construction of the PHENIX Computing Center in Japan (CC-J) at RIKEN Wako campus, which will extend over a three years period, began in April 1999.
  • The CC-J is intended as the principal site of computing for PHENIX simulation, a regional PHENIX Asian computing center, and a center for the analysis of RHIC spin Physics.
  • The CC-J will handle the data of about 220 TB/year and the total CPU performance is planned to be 10k SPECint95 (100k SPECint2000) in 2002.
  • CPU farm of 128 processors (RH6.1, kernel 2.2.14/16 with nfsv3 ) is stable.
  • Copy data over WAN: Large ftp performance (641 KB/s = 5 Mbps) was obtained for over the Pacific Ocean (RTT = 170 ms)
  • The CC-J operation started in June 2000 at 1/3 scale.
    • 39 user’s account created.
  • 100K-event simulation project started in September 2000.
  • Some part of real raw data (about 2 TB) of PHENIX experiment transferred to CC-J via WAN and data analysis by regional users are in progress.
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