A Comparison of CPU and GPU Implementations for the LHCb Experiment Run 3 Trigger

A Comparison of CPU and GPU Implementations for the LHCb Experiment Run 3 Trigger
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LHCb 实验运行 3 触发器的 CPU 和 GPU 实现比较

DOI:
10.1007/s41781-021-00070-2
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发表时间:
2021
影响因子:
--
通讯作者:
Aaij R
Aaij R
中科院分区:
--
文献类型:
--
作者:
Aaij R

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欧洲核子研究中心的大型强子对撞机美容(LHCb)实验正在进行升级,为大型强子对撞机(LHC)的运行3数据收集期做准备。作为此次升级的一部分,触发器正在转向以LHC束流交叉率运行的完整软件实现。我们提出了一个基于CPU和基于GPU的高级别触发器的第一阶段的实现评估。经过详细比较,两种方案都是可行的。本文档总结了这些选项的性能和实现细节,其结果导致选择基于GPU的实现作为基线。
The Large Hadron Collider beauty (LHCb) experiment at CERN is undergoing an upgrade in preparation for the Run 3 data collection period at the Large Hadron Collider (LHC). As part of this upgrade, the trigger is moving to a full software implementation operating at the LHC bunch crossing rate. We present an evaluation of a CPU-based and a GPU-based implementation of the first stage of the high-level trigger. After a detailed comparison, both options are found to be viable. This document summarizes the performance and implementation details of these options, the outcome of which has led to the choice of the GPU-based implementation as the baseline.
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