학술논문
Protocol-independent event building evaluator for the LHCb DAQ system
Document Type
Conference
Source
2014 19th IEEE-NPSS Real Time Conference Real Time Conference (RT), 2014 19th IEEE-NPSS. :1-2 May, 2014
Subject
Language
Abstract
The Data Acquisition (DAQ) system of LHCb is a complex, real-time system connecting more than 300 readout boards with more than 1500 servers by means of highperformance network 68 switches. The total data rate through this network is more than 60 GB/s. The DAQ network has a FAT-tree topology, composed of an aggregation and a distribution layer, where traffic flows unidirectionally to the server farm. This system will be upgraded to provide LHCb with an all-software, trigger-free readout starting from 2020. Consequently more CPU power in the from of servers are needed and the DAQ network will grow to a capacity of 40 Tbps.