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Title: CMS DAQ event builder based on Gigabit Ethernet

Abstract

The CMS Data Acquisition System is designed to build and filter events originating from 476 detector data sources at a maximum trigger rate of 100 KHz. Different architectures and switch technologies have been evaluated to accomplish this purpose. Events will be built in two stages: the first stage will be a set of event builders called FED Builders. These will be based on Myrinet technology and will pre-assemble groups of about 8 data sources. The second stage will be a set of event builders called Readout Builders. These will perform the building of full events. A single Readout Builder will build events from 72 sources of 16 KB fragments at a rate of 12.5 KHz. In this paper we present the design of a Readout Builder based on TCP/IP over Gigabit Ethernet and the optimization that was required to achieve the design throughput. This optimization includes architecture of the Readout Builder, the setup of TCP/IP, and hardware selection.

Authors:
; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ;
Publication Date:
Research Org.:
Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
919586
Report Number(s):
FERMILAB-CONF-07-364-E
TRN: US0806448
DOE Contract Number:
AC02-07CH11359
Resource Type:
Conference
Resource Relation:
Conference: Prepared for 15th IEEE Real Time Conference 2007 (RT 07), Batavia, Illinois, 29 Apr - 4 May 2007
Country of Publication:
United States
Language:
English
Subject:
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; COMPUTER ARCHITECTURE; BUILDERS; DATA ACQUISITION SYSTEMS; DESIGN; OPTIMIZATION; Instrumentation

Citation Formats

Bauer, G., /MIT, Boyer, V., /CERN, Branson, J., /UC, San Diego, Brett, A., Cano, E., Carboni, A., Ciganek, M., Cittolin, S., /CERN, Erhan, Samim, /CERN /UCLA, Gigi, D., Glege, F., and /CERN /INFN, Legnaro /CERN /CERN /Kyungpook Natl. U. /MIT /UC, San Diego /CERN. CMS DAQ event builder based on Gigabit Ethernet. United States: N. p., 2007. Web.
Bauer, G., /MIT, Boyer, V., /CERN, Branson, J., /UC, San Diego, Brett, A., Cano, E., Carboni, A., Ciganek, M., Cittolin, S., /CERN, Erhan, Samim, /CERN /UCLA, Gigi, D., Glege, F., & /CERN /INFN, Legnaro /CERN /CERN /Kyungpook Natl. U. /MIT /UC, San Diego /CERN. CMS DAQ event builder based on Gigabit Ethernet. United States.
Bauer, G., /MIT, Boyer, V., /CERN, Branson, J., /UC, San Diego, Brett, A., Cano, E., Carboni, A., Ciganek, M., Cittolin, S., /CERN, Erhan, Samim, /CERN /UCLA, Gigi, D., Glege, F., and /CERN /INFN, Legnaro /CERN /CERN /Kyungpook Natl. U. /MIT /UC, San Diego /CERN. Sun . "CMS DAQ event builder based on Gigabit Ethernet". United States. doi:. https://www.osti.gov/servlets/purl/919586.
@article{osti_919586,
title = {CMS DAQ event builder based on Gigabit Ethernet},
author = {Bauer, G. and /MIT and Boyer, V. and /CERN and Branson, J. and /UC, San Diego and Brett, A. and Cano, E. and Carboni, A. and Ciganek, M. and Cittolin, S. and /CERN and Erhan, Samim and /CERN /UCLA and Gigi, D. and Glege, F. and /CERN /INFN, Legnaro /CERN /CERN /Kyungpook Natl. U. /MIT /UC, San Diego /CERN},
abstractNote = {The CMS Data Acquisition System is designed to build and filter events originating from 476 detector data sources at a maximum trigger rate of 100 KHz. Different architectures and switch technologies have been evaluated to accomplish this purpose. Events will be built in two stages: the first stage will be a set of event builders called FED Builders. These will be based on Myrinet technology and will pre-assemble groups of about 8 data sources. The second stage will be a set of event builders called Readout Builders. These will perform the building of full events. A single Readout Builder will build events from 72 sources of 16 KB fragments at a rate of 12.5 KHz. In this paper we present the design of a Readout Builder based on TCP/IP over Gigabit Ethernet and the optimization that was required to achieve the design throughput. This optimization includes architecture of the Readout Builder, the setup of TCP/IP, and hardware selection.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Sun Apr 01 00:00:00 EDT 2007},
month = {Sun Apr 01 00:00:00 EDT 2007}
}

Conference:
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