Producing Madgraph5_aMC@NLO gridpacks and using TensorFlow GPU resources in the CMS HTCondor Global Pool

Conference · Tue Jan 01 00:00:00 EST 2019 · EPJ Web Conf.

DOI:https://doi.org/10.1051/epjconf/201921403004· OSTI ID:1843235

Bockelman, Brian Paul ^[1]; Fajardo Hernandez, Edgar ^[2]; Foyo, Diego Davila ^[3]; Hurtado Anampa, Kenyi ^[4]; Khan, Farrukh Aftab ^[5]; Larson, Krista ^[5]; Letts, James  ^[2]; Mascheroni, Marco ^[5]; Mason, David ^[5]; Perez-Calero Yzquierdo, Antonio  ^[6]; Ivanov, Todor Trendafilovz ^[7]

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1. Nebraska U.
2. UC, San Diego
3. Puebla U., Mexico
4. Notre Dame U.
5. Fermilab
6. PIC, Bellaterra; Madrid, CIEMAT
7. Sofiya U.

The CMS experiment has an HTCondor Global Pool, composed of more than 200K CPU cores available for Monte Carlo production and the analysis of da.The submission of user jobs to this pool is handled by either CRAB, the standard workflow management tool used by CMS users to submit analysis jobs requiring event processing of large amounts of data, or by CMS Connect, a service focused on final stage condor-like analysis jobs and applications that already have a workflow job manager in place. The latest scenario canbring cases in which workflows need further adjustments in order to efficiently work in a globally distributed pool of resources. For instance, the generation of matrix elements for high energy physics processes via Madgraph5_aMC@NLO and the usage of tools not (yet) fully supported by the CMS software, such as Ten-sorFlow with GPUsupport, are tasks with particular requirements. A special adaption, either at the pool factory level (advertising GPU resources) or at the execute level (e.g: to handle special parameters that describe certain needs for the remote execute nodes during submission) is needed in order to adequately work in the CMS global pool. This contribution describes the challenges and efforts performed towards adaptingsuch workflows so they can properly profit from the Global Pool via CMS Connect.

• Research Organization: Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
• Sponsoring Organization: USDOE Office of Science (SC), High Energy Physics (HEP)
• DOE Contract Number: AC02-07CH11359
• OSTI ID: 1843235
• Report Number(s): FERMILAB-CONF-19-833-SCD; oai:inspirehep.net:1760909
• Journal Information: EPJ Web Conf., Vol. 214
• Country of Publication: United States
• Language: English