Evolution of the CMS Global Submission Infrastructure for the HL-LHC Era

Journal Article · Wed Jan 01 00:00:00 EST 2020 · EPJ Web Conf.

DOI:https://doi.org/10.1051/epjconf/202024503016· OSTI ID:1831889

Yzquierdo, Antonio Pérez-Calero  ^[1]; Acosta Flechas, Maria ^[2]; Foyo, Diego Davila ^[3]; Haleem, Saqib ^[4]; Hurtado Anampa, Kenyi ^[5]; Ivanov, Todor Trendafilov ^[5]; Khan, Farrukh Aftab ^[2]; Kizinevič, Edita ^[6]; Larson, Krista ^[2]; Letts, James  ^[3]; Mascheroni, Marco ^[3]; Mason, David ^[2]

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1. Madrid, CIEMAT; PIC, Bellaterra
2. Fermilab
3. UC, San Diego
4. NCP, Islamabad
5. Notre Dame U.
6. Vilnius U.

Efforts in distributed computing of the CMS experiment at the LHC at CERN are now focusing on the functionality required to fulfill the projected needs for the HL-LHC era. Cloud and HPC resources are expected to be dominant relative to resources provided by traditional Grid sites, being also much more diverse and heterogeneous. Handling their special capabilities or limitations and maintaining global flexibility and efficiency, while also operating at scales much higher than the current capacity, are the major challenges being addressed by the CMS Submission Infrastructure team. These proceedings discuss the risks to the stability and scalability of the CMS HTCondor infrastructure extrapolated to such a scenario, thought to be derived mostly from its growing complexity, with multiple Negotiators and schedulers flocking work to multiple federated pools. New mechanisms for enhanced customization and control over resource allocation and usage, mandatory in this future scenario, are also described.

• Research Organization: Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
• Sponsoring Organization: USDOE Office of Science (SC), High Energy Physics (HEP)
• Contributing Organization: CMS
• DOE Contract Number: AC02-07CH11359
• OSTI ID: 1831889
• Report Number(s): FERMILAB-PUB-20-711-CMS; oai:inspirehep.net:1831509
• Journal Information: EPJ Web Conf., Vol. 245
• Country of Publication: United States
• Language: English