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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


Thank you questions

Thank you / Questions?


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