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eVLBI etc. Chet Ruszczyk 11/2/11 US VLBI Technical Meeting, NM. Connectivity. Correlators USNO (600Mbps) Haystack (10Gbps ? ) Antenna’s Arecibo GGAO (?) Kokee (KPGO) Mauna Kea (NRAO) Westford (?). Equipment. RDBE’s Generate 2 / 4 / 8 Gbps UDP / IP Network ready eVLBI

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evlbi etc

eVLBI etc.

Chet Ruszczyk

11/2/11

US VLBI Technical Meeting, NM

connectivity
Connectivity
  • Correlators
    • USNO (600Mbps)
    • Haystack (10Gbps ? )
  • Antenna’s
    • Arecibo
    • GGAO (?)
    • Kokee (KPGO)
    • Mauna Kea (NRAO)
    • Westford (?)

US VLBI Technical Meeting, Socorro

equipment
Equipment
  • RDBE’s
    • Generate
      • 2 / 4 / 8 Gbps
      • UDP / IP
    • Network ready
      • eVLBI
  • Storage nodes
    • Burst mode recorders
    • MarkX’s

US VLBI Technical Meeting, Socorro

evlbi
eVLBI
  • What can this mean?
    • Standard eVLBI approach used today
      • Real time
        • Intensives
      • Non-real time
        • e-transfers
        • burst Mode
    • Use of the cloud resources
      • Temporary storage
      • Computation resources

US VLBI Technical Meeting, Socorro

next steps
Next Steps
  • V Series impact
    • vdif format
      • Conversion software to appropriate format
    • vtp
      • For Net to disk transfers?
        • real-time
        • non-real time
          • burst Mode
      • Is it used for disk to disk transfers?
        • non-real time
          • File transfer application?
      • tcp versus udp standardization

US VLBI Technical Meeting, Socorro

e transfer issues
e-transfer issues
  • Application requirement
    • US community does not have a standard disk 2 disk file transfer software
      • Tsunami (UDP based)
        • Issue with certain US ISPs
        • not a good neighbor based upon performance characterisitics
      • Alternatives
        • GridFTP
          • Difficult to install
          • Once installed GLOBUS (middle-ware software )
            • Makes life easy
        • Nutscp
          • Engineering version only

US VLBI Technical Meeting, Socorro