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

doi:10.1109/nssmic.2003.1351934

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: Contribution to journal › Conference article › peer-review

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 language	English (US)
Article number	N36-71
Pages (from-to)	1307-1308
Number of pages	2
Journal	IEEE Nuclear Science Symposium Conference Record
Volume	2
DOIs	https://doi.org/10.1109/nssmic.2003.1351934
State	Published - 2003
Externally published	Yes
Event	2003 IEEE Nuclear Science Symposium Conference Record - Nuclear Science Symposium, Medical Imaging Conference - Portland, OR, United States Duration: Oct 19 2003 → Oct 25 2003

Keywords

DAQ
DO
DZero
Ethernet
Fermilab
Level3
Trigger

ASJC Scopus subject areas

Radiation
Nuclear and High Energy Physics
Radiology Nuclear Medicine and imaging

Online availability

10.1109/nssmic.2003.1351934

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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. IEEE Nuclear Science Symposium Conference Record, 2, 1307-1308. Article N36-71. https://doi.org/10.1109/nssmic.2003.1351934

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', IEEE Nuclear Science Symposium Conference Record, vol. 2, N36-71, pp. 1307-1308. https://doi.org/10.1109/nssmic.2003.1351934

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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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doi = "10.1109/nssmic.2003.1351934",

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AU - Haas, A.

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.

PY - 2003

Y1 - 2003

N2 - 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.

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.

KW - DAQ

KW - DO

KW - DZero

KW - Ethernet

KW - Fermilab

KW - Level3

KW - Trigger

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EP - 1308

JO - IEEE Nuclear Science Symposium Conference Record

JF - IEEE Nuclear Science Symposium Conference Record

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ER -

Dataflow in the DZero Level3 Trigger/DAQ system

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Keywords

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