1 / 19

Status of AMS Regional Data Center

Status of AMS Regional Data Center. G. N. Kim , J. W. Shin, N. Tasneem, M. W. Lee, D. Son. The Second International Workshop on HEP Data Grid. CHEP, KNU 2003. 8. 22-23. (On behalf of the HEP Data Grid Working Group). AMS (Alpha Magnetic Spectrometer).

veta
Download Presentation

Status of AMS Regional Data Center

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Status of AMS Regional Data Center G. N. Kim, J. W. Shin, N. Tasneem, M. W. Lee,D. Son The Second International Workshop on HEP Data Grid CHEP, KNU 2003. 8. 22-23 (On behalf of the HEP Data Grid Working Group)

  2. AMS (Alpha Magnetic Spectrometer) • A Particle Physics Experiment on the International Space Station for 3 or 4 Years • Will Collect ~1010 Cosmic Rays in Near-Earth Orbit from 300 MeV to 3 TeV PHYSICS GOALS : • To search for Antimatter (He,C) in space with a sensitivity of 103 to 104 better than current limits. • To search for Dark matter High statistics precision measurements of e,  and p spectrum. • To study Astrophysics. High statistics precision measurements of D, 3He, 4He, B, C, 9Be, 10Be spectrum • B/C: to understand CR propagation in the Galaxy (parameters of galactic wind). • 10Be/9Be: to determine CR confinement time in the Galaxy.

  3. AMS-02(Alpha Magnetic Spectrometer)

  4. Commercial Satellite Service Space Station Five Downlink Video Feeds & Telemetry Backup Remote User Facility Internet 0.9 meter dish MSFC POIC Telemetry Voice Planning Commanding JSC Distribute Locally & Conduct Science Or A Dedicated Service/Circuit Data Flowfrom ISS to Remote AMS Centers White Sands, NM

  5. White Sand, NM facility AMS Real-time, “Dump”, & White Sand’s LOR playback Payload Operations Control Center Real-time & “Dump” data Monitoring& science data MSFC, Al External Communications Real-time & “dump” Payload Data Service system Real-time Data H&S H&S Monitoring Science Flight ancillary data ACOP Short Term Long Term Stored data GSE Science Operations Center NearReal-time File transfer High Rate Frame MUX playback Telescience centers NASA Ground Infrastructure Remote AMS Sites ISS Data Flowfrom ISS to Remote AMS Centers AMS Crew Operation Post

  6. Connectivity from ISS to CHEP International Space Station (ISS) 무궁화위성 Commercial Satellite Service CHEP ISP-1 ISP-2 White Sands, NM CERN (SDC) Chicago NAP Five Downlink Video Feeds & Telemetry Backup vBNS MSFC POIC/ POCC Telemetry Voice Planning Commanding MIT LANs NINS B4207 ISP-3 vBNS MIT JSC ISP :Internet Service Provider NAP - Network Access Point vBNS - very high Broadband Network Service NINS - NASA Integrated Network Services POCC - Payload Operations Control Center POIC- Payload Operations Integration Center RC RS

  7. Origin Data Category Volume (TB) Beam Calibrations Calibration 0.3 Preflight Tests Calibration 0.4 3 years flight Scientific 33 –45 3 years flight Calibration 0.03 3 years flight House Keeping 0.18 Data Summary Files (DST) Ntuples or ROOT files 165-260 Catalogs Flat files or ROOT files or ORACLE 0.05 Event Tages Flat files or ROOT files or ORACLE 0.2 TDV files Flat files or ROOT files or ORACLE 0.5 Table. AMS02 data transmitted to SDC from POIC Stream Band Width Data Category Volume (TB/year) High Rate 3-4 Mbit/s Scientific 11 – 15 Calibration 0.01 Slow Rate 16 kbit/s Housing Keeping 0.06 NASA Auxillary Data 0.01 Table. AMS02 Data Volumes Total AMS02 data volume is about 200 TB

  8. CHEP as an AMS Regional Center Internet Server Ewha 무궁화위성 Data Storage Display Facility AMS RC Disk Storage (20TB) Analysis Facility Tape Library DB Server (~200 TB) Hub Gigabit Ethernet Linux Clusters Cluster Servers AMS RS

  9. Hub Gigabit Ethernet Linux Clusters AMS Cluster Servers AMS Analysis Facility at CHEP • CHEP • AMS Cluster Server: 1 • CPU: AMD Athlon MP 2000+ dual • Disk Space: 80 GB • OS: Redhat 9.0 • Linux Clusters : 12 • CPU: AMD Athlon MP 2000+ dual • Disk Space: 80 GB x 12 =960 GB • OS : Redhat 7.3 2) KT AMS Cluster Server: 1 CPU: Intel XEON 2GHz dual Disk Space: 80 GB OS: Redhat 9.0 Linux Clusters : 4 -11 CPU: Intel XEON 2GHz dual Disk Space: 80 GB x 4 =320 GB – 880 GB OS:Redhat 7.3

  10. MC Production Center and their Capacity

  11. MC Production Procedure by Remote Client Step:1 Write here registered info. Step:2 Click here! Step:3 Choose any one from datasets. Step:4 Choose appropriate dataset.

  12. MC Production Procedure by Remote Client Step:5 Choose appropriate CPU Type & CPU clock. Step:7 Put total number of jobs requested Step:6 Put appropriate CPU time limit. Step:9 Choose MC production Mode. Step:8 Put ‘Total Real Time Required’. Step:10 Click On ‘Submit Request’

  13. MC Database Query Form

  14. Status of MC Events at CHEP • Photon Events with trigger level 1 Data Format: Ntuple Energy [GeV] NT[x106] NS Size[GB] Generated by 1 7 65,076 0.559 CHEP 2 7 78,736 0.612 CHEP 4 7 82,780 0.622 CHEP 8 7 86,553 0.632 CHEP 16 7 98,700 0.640 CHEP 64 7 Proc. - CHEP 128 7 100,201 0.650 CHEP 256 7 Proc. - CHEP 512 7 Proc. - CHEP Total 42 3.666

  15. 2. Proton Events with trigger level 1 Data Format: Ntuple Energy [GeV] NT[x106] NS Size[GB] Generated by 16 6.7 26,720 1.3 CHEP 128 6.5 25,042 1.2 CERN 256 16.25 52,408 2.8 CERN 512 17.5 55,837 3.5 CERN Total 46.95 8.8

  16. Data Handling Program: bbFTP • bbFTP is a file transfer software developed by Gilles Farrache in Lyon • Encoded username and password at connection • SSH and Certificate authentification modules • Multi-stream transfer • Big windows as defined in RFC1323 • On-the-fly data compression • Automatic retry • Customizable time-outs • Transfer simulation • AFS authentification integration • RFIO interface http://ccweb.in2p3.fr/bbftp/

  17. Data Transmission Tests • Using TEIN (10 Mbit/s ) in Dec. 2002 • - for a number of TCP/IP streams • - for a file size

  18. Summary • CHEP as AMS Regional Center • Prepared an Analysis Facility and Data Storage • Producing MC events • Progress in MC production with GRID Tools

More Related