HEP计算协作应对未来十年的挑战
HEP computing collaborations for the challenges of the next decade
摘要：
十多年前，大型高能物理（HEP）实验采用了分布式计算模型。WLCG是LHC的全球计算基础设施，与美国开放科学网格合作，实现了数百PB规模的数据管理，并以对最终用户基本透明的方式提供对整个社区的访问。HL-LHC计划是未来十年LHC实验的主要计算挑战。其他大型HEP实验，如DUNE和Belle II，具有大规模计算需求，并在相同的时间尺度上提供合作机会。许多支持HEP实验的计算设施是共享的，面临着共同的挑战，软件库和服务也是如此。LHC实验和他们的WLCG合作伙伴DUNE和Belle II现在正在合作发展计算基础设施和服务，以满足他们未来的需求，由WLCG组织，OSG，HEP软件基金会和开发项目，如HEP-CCE，IRIS-HEP和SWIFT-HEP。在本文中，我们概述了国际HEP计算基础设施，软件和服务应通过大规模和小规模的HEP实验的合作，同时尊重每个社区的具体需求的战略。我们还强调了相同的基础设施将如何为其他科学带来好处，与HEP共享类似的需求。这一提议符合OSG/WLCG解决HL-LHC计算问题的战略，并与欧洲和其他国际大规模科学计算战略保持一致。2020年欧洲粒子物理战略在其最终报告中同意了上述原则。
英文摘要：
Large High Energy Physics (HEP) experiments adopted a distributed computing model more than a decade ago. WLCG, the global computing infrastructure for LHC, in partnership with the US Open Science Grid, has achieved data management at the many-hundred-Petabyte scale, and provides access to the entire community in a manner that is largely transparent to the end users. The main computing challenge of the next decade for the LHC experiments is presented by the HL-LHC program. Other large HEP experiments, such as DUNE and Belle II, have large-scale computing needs and afford opportunities for collaboration on the same timescale. Many of the computing facilities supporting HEP experiments are shared and face common challenges, and the same is true for software libraries and services. The LHC experiments and their WLCG- partners, DUNE and Belle II, are now collaborating to evolve the computing infrastructure and services for their future needs, facilitated by the WLCG organization, OSG, the HEP Software Foundation and development projects such as HEP-CCE, IRIS-HEP and SWIFT-HEP. In this paper we outline the strategy by which the international HEP computing infrastructure, software and services should evolve through the collaboration of large and smaller scale HEP experiments, while respecting the specific needs of each community. We also highlight how the same infrastructure would be a benefit for other sciences, sharing similar needs with HEP. This proposal is in line with the OSG/WLCG strategy for addressing computing for HL-LHC and is aligned with European and other international strategies in computing for large scale science. The European Strategy for Particle Physics in 2020 agreed to the principles laid out above, in its final report.
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