Dataflow in the DZero Level3 Trigger/DAQ system

A. Haas, B. Angstadt, D. Chapin, D. Charak, M. Clements, D. Cutts, R. Hauser, M. Johnson, A. Kulyavtsev, S. Mattingly, M. Mulders, P. Padley, D. Petravik, R. Rechenmacher, S. Snyder, G. Watts, D. Zhang

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Abstract

    The Level3 Trigger / Data Acquisition system (L3DAQ) for the DZero detector was redesigned from scratch for the Fermilab Tevatron's Run II. The L3DAQ moves data at a rate of 250 MB/sec from 63 readout crates to one of 82 trigger farm nodes. The L3DAQ system is built around a CISCO 6509 Ethernet switch and uses TCP/IP for all communication and dataflow. This poster will detail the dataflow in the system, which includes the event building in each Level 3 Trigger node, the TCP/IP settings used to maximize throughput, the trigger node advertisement scheme used, and means used to restrict peak dataflow through the switch and avoid dropped packets. Other data paths and the physical layout of the entire system will also be described.

    Original languageEnglish (US)
    Title of host publicationIEEE Nuclear Science Symposium Conference Record
    EditorsS.D. Metzler
    Pages1307-1308
    Number of pages2
    Volume2
    StatePublished - 2003
    Event2003 IEEE Nuclear Science Symposium Conference Record - Nuclear Science Symposium, Medical Imaging Conference - Portland, OR, United States
    Duration: Oct 19 2003Oct 25 2003

    Other

    Other2003 IEEE Nuclear Science Symposium Conference Record - Nuclear Science Symposium, Medical Imaging Conference
    CountryUnited States
    CityPortland, OR
    Period10/19/0310/25/03

    Fingerprint

    Data acquisition
    Switches
    Ethernet
    Farms
    Throughput
    Detectors
    Communication

    Keywords

    • DAQ
    • DO
    • DZero
    • Ethernet
    • Fermilab
    • Level3
    • Trigger

    ASJC Scopus subject areas

    • Computer Vision and Pattern Recognition
    • Industrial and Manufacturing Engineering

    Cite this

    Haas, A., Angstadt, B., Chapin, D., Charak, D., Clements, M., Cutts, D., ... Zhang, D. (2003). Dataflow in the DZero Level3 Trigger/DAQ system. In S. D. Metzler (Ed.), IEEE Nuclear Science Symposium Conference Record (Vol. 2, pp. 1307-1308). [N36-71]

    Dataflow in the DZero Level3 Trigger/DAQ system. / Haas, A.; Angstadt, B.; Chapin, D.; Charak, D.; Clements, M.; Cutts, D.; Hauser, R.; Johnson, M.; Kulyavtsev, A.; Mattingly, S.; Mulders, M.; Padley, P.; Petravik, D.; Rechenmacher, R.; Snyder, S.; Watts, G.; Zhang, D.

    IEEE Nuclear Science Symposium Conference Record. ed. / S.D. Metzler. Vol. 2 2003. p. 1307-1308 N36-71.

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Haas, A, Angstadt, B, Chapin, D, Charak, D, Clements, M, Cutts, D, Hauser, R, Johnson, M, Kulyavtsev, A, Mattingly, S, Mulders, M, Padley, P, Petravik, D, Rechenmacher, R, Snyder, S, Watts, G & Zhang, D 2003, Dataflow in the DZero Level3 Trigger/DAQ system. in SD Metzler (ed.), IEEE Nuclear Science Symposium Conference Record. vol. 2, N36-71, pp. 1307-1308, 2003 IEEE Nuclear Science Symposium Conference Record - Nuclear Science Symposium, Medical Imaging Conference, Portland, OR, United States, 10/19/03.
    Haas A, Angstadt B, Chapin D, Charak D, Clements M, Cutts D et al. Dataflow in the DZero Level3 Trigger/DAQ system. In Metzler SD, editor, IEEE Nuclear Science Symposium Conference Record. Vol. 2. 2003. p. 1307-1308. N36-71
    Haas, A. ; Angstadt, B. ; Chapin, D. ; Charak, D. ; Clements, M. ; Cutts, D. ; Hauser, R. ; Johnson, M. ; Kulyavtsev, A. ; Mattingly, S. ; Mulders, M. ; Padley, P. ; Petravik, D. ; Rechenmacher, R. ; Snyder, S. ; Watts, G. ; Zhang, D. / Dataflow in the DZero Level3 Trigger/DAQ system. IEEE Nuclear Science Symposium Conference Record. editor / S.D. Metzler. Vol. 2 2003. pp. 1307-1308
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    abstract = "The Level3 Trigger / Data Acquisition system (L3DAQ) for the DZero detector was redesigned from scratch for the Fermilab Tevatron's Run II. The L3DAQ moves data at a rate of 250 MB/sec from 63 readout crates to one of 82 trigger farm nodes. The L3DAQ system is built around a CISCO 6509 Ethernet switch and uses TCP/IP for all communication and dataflow. This poster will detail the dataflow in the system, which includes the event building in each Level 3 Trigger node, the TCP/IP settings used to maximize throughput, the trigger node advertisement scheme used, and means used to restrict peak dataflow through the switch and avoid dropped packets. Other data paths and the physical layout of the entire system will also be described.",
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    AU - Angstadt, B.

    AU - Chapin, D.

    AU - Charak, D.

    AU - Clements, M.

    AU - Cutts, D.

    AU - Hauser, R.

    AU - Johnson, M.

    AU - Kulyavtsev, A.

    AU - Mattingly, S.

    AU - Mulders, M.

    AU - Padley, P.

    AU - Petravik, D.

    AU - Rechenmacher, R.

    AU - Snyder, S.

    AU - Watts, G.

    AU - Zhang, D.

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    AB - The Level3 Trigger / Data Acquisition system (L3DAQ) for the DZero detector was redesigned from scratch for the Fermilab Tevatron's Run II. The L3DAQ moves data at a rate of 250 MB/sec from 63 readout crates to one of 82 trigger farm nodes. The L3DAQ system is built around a CISCO 6509 Ethernet switch and uses TCP/IP for all communication and dataflow. This poster will detail the dataflow in the system, which includes the event building in each Level 3 Trigger node, the TCP/IP settings used to maximize throughput, the trigger node advertisement scheme used, and means used to restrict peak dataflow through the switch and avoid dropped packets. Other data paths and the physical layout of the entire system will also be described.

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    KW - DZero

    KW - Ethernet

    KW - Fermilab

    KW - Level3

    KW - Trigger

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