A novel approach for FPGA-to-server data transmission over an Ethernet-based network using the eXpress Data Path technology

In the context of the upgrade of the Large Hadron Collider at CERN for high-luminosity operation, the particle detectors have to cope with much higher data rates and therefore need to upgrade their data acquisition systems. This upgrade is taken as an opportunity to exchange the currently used highl...

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Bibliographic Details
Published in:Journal of instrumentation 2023-06, Vol.18 (6), p.P06016
Main Authors: Dülsen, C., Flick, T., Göhring, T., Wagner, W., Wensing, M.
Format: Article
Language:English
Subjects:
Data acquisition
Data acquisition concepts
Data paths
Data transmission
Electronic detector readout concepts (solid-state)
Ethernet
Field programmable gate arrays
Large Hadron Collider
Radiation counters
Servers
Upgrading
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Summary:In the context of the upgrade of the Large Hadron Collider at CERN for high-luminosity operation, the particle detectors have to cope with much higher data rates and therefore need to upgrade their data acquisition systems. This upgrade is taken as an opportunity to exchange the currently used highly customized hardware by commercial solutions. Nevertheless, some part of the data processing still needs to be done within Field Programmable Gate Arrays (FPGA), requiring the transfer of data between the FPGAs and the commercial servers. This paper reports on a study of direct data transmission from FPGAs to servers via a commercial network. Large data buffers as required for reliable data-transmission protocols are avoided by using an emerging technique named eXpress Data Path (XDP). Based on XDP, the transmission of 5.2 PB (i.e. 2.92 × 10 12   packets) was achieved within 168 h without a single missing packet.
ISSN:1748-0221
1748-0221
DOI:10.1088/1748-0221/18/06/P06016