AMS-02 Italian Ground Segment Scheme
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Transcript of AMS-02 Italian Ground Segment Scheme
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CERN 14/01/2002 1
Data Handling Scheme for the Italian Ground Segment (IGS), as part of AMS-02 Ground Segment
(P.G. Rancoita)
• Functions of a “Regional Center” can be carried out by facilities localized in different physical places
• General scheme for the data handling of IGS -- for Data transfer from and to CERN facility -- transfer can involve both scientific and MC data
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CERN 14/01/2002 2
AMS-02 Italian Ground Segment Scheme
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• The IGS provides data transfer for a 2nd copy of AMS-02 data and the MC production (and subsequent transfer and archiving) of about 20% of MC data
• It includes :• the Data Transfer Facility (DTF) at CERN• the Data Archiving (IGSDS) and MC
production (IGSMCPF) at the ASDC• the Data Transfer Management and Survey
Facility (DTMS) in Milano
AMS-02 Italian Ground Segment
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CERN 14/01/2002 4
Infrastructure in Milano
• Dedicated computing room
• Additional&Independent air cond.
• Additional (>) 20 KW UPS System
• GARR connectivity 16 Mb/s (can be increased)
We are thus able to provide ~ 7days/7 24 hr/24 uptime...
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CERN 14/01/2002 5
Milano Data Center...
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Data Handling R&D Being Milano responsible of developing and testing, incollaboration with AMS SW group, the Data Transfersystem relating IGS and DTF, in Milano we have (or weare going to have) prototypes of:
• Italian Data Transfer Facility, which will be located at CERN.
• IGS receiving Facility.
• Monitor& Survey Facility, which will be located in Milano
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CERN 14/01/2002 7
Data Handling R&D All the machines for the 3 facilities will be similar
and equivalent (or better) to:
• AMD Athlon 1.4 GHz• 128 MB RAM• IDE/ATA-100 disks• 100 Mb/s dedicated LAN.
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CERN 14/01/2002 8
Data Handling R&D Sw layout on them:
• RedHat 7.1• kernel 2.4.9-12• MySql 3.23• bbftp 2.1.2• OpenSsh 2.9p2
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Analysis Data Handling
For scientific data analyses, we are also setting up a facility, in which particle tracing in the magnetosphere is the most CPU intensive activity
It is made out of a 20 hosts Linux farm, with 1 masterServer and 19 diskless clients. Clients boot by means ofEtherboot and necessary SW is stored on an EPROMmounted on board of the Network card.
• AMD Athlon 1.2 GHz• 256 MB RAM• 100 Mb/s dedicated private LAN
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Analysis Facility R&D
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CERN 14/01/2002 11
Linux farm
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Linux farm cont.
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Linux farm cont.
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AMS-02 Italian Ground Segment
• Next presentation (Matteo) about:
Data Transfer (and Handling) Tests performed and going on