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eVLBI etc.

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.

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  1. eVLBI etc. Chet Ruszczyk 11/2/11 US VLBI Technical Meeting, NM

  2. Connectivity • Correlators • USNO (600Mbps) • Haystack (10Gbps ? ) • Antenna’s • Arecibo • GGAO (?) • Kokee (KPGO) • Mauna Kea (NRAO) • Westford (?) US VLBI Technical Meeting, Socorro

  3. 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

  4. 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

  5. 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

  6. 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

  7. Thank you / Questions?

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