Title |
Lessons Learned Moving from Pharlap to Linux RT |
Authors |
- C. Charrondière, O.Ø. Andreassen, D. Sierra-Maíllo Martínez, J. Tagg, T. Zilliox
CERN, Meyrin, Switzerland
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Abstract |
The start of the Advanced Proton Driven Plasma Wakefield Acceleration Experiment (AWAKE) facility at CERN in 2016 came with the need for a continuous image acquisition system. The international scientific collaboration responsible for this project requested low and high resolution acquisition at a capture rate of 10Hz and 1 Hz respectively. To match these requirements, GigE digital cameras were connected to a PXI system running PharLap, a real-time operating system, using dual port 1GB/s network cards. With new requirements for a faster acquisition with higher resolution, it was decided to add 10GB/s network cards and a Network Attached Storage (NAS) directly connected to the PXI system to avoid saturating the network. There was also a request to acquire high-resolution images on several cameras during a limited duration, typically 30 seconds, in a burst acquisition mode. To comply with these new requirements PharLap had to be abandoned and replaced with Linux RT. This paper describes the limitation of the PharLap system and the lessons learned during the transition to Linux RT. We will show the improvement of CPU stability and data throughput reached.
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Paper |
download MOPV044.PDF [0.958 MB / 4 pages] |
Poster |
download MOPV044_POSTER.PDF [0.525 MB] |
Cite |
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Conference |
ICALEPCS2021 |
Series |
International Conference on Accelerator and Large Experimental Physics Control Systems (18th) |
Location |
Shanghai, China |
Date |
14-22 October 2021 |
Publisher |
JACoW Publishing, Geneva, Switzerland |
Editorial Board |
Kazuro Furukawa (KEK, Tsukuba, Japan); Yingbing Yan (SARI,Shanghai, China); Yongbin Leng (SARI,Shanghai, China); Zhichu Chen (SARI,Shanghai, China); Volker RW Schaa (GSI, Darmstadt, Germany) |
Online ISBN |
978-3-95450-221-9 |
Online ISSN |
2226-0358 |
Received |
08 October 2021 |
Revised |
18 October 2021 |
Accepted |
20 November 2021 |
Issue Date |
04 January 2022 |
DOI |
doi:10.18429/JACoW-ICALEPCS2021-MOPV044 |
Pages |
257-260 |
Copyright |
Published by JACoW Publishing under the terms of the Creative Commons Attribution 3.0 International license. Any further distribution of this work must maintain attribution to the author(s), the published article's title, publisher, and DOI. |
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