Experiences Readying Applications for Exascale

Bauman, Paul T.; Budiardja, Reuben D.; Bykov, Dmytro; Chalmers, Noel; Chen, Jacqueline; Curtis, Nicholas; Day, Marc; Eisenbach, Markus; Esclapez, Lucas; Fanfarillo, Alessandro; Freitag, William; Frontiere, Nicholas; Georgiadou, Antigoni; Glenski, Joseph; Gottiparthi, Kalyana; Henry de Frahan, Marc T.; Jansen, Gustav R.; Joubert, Wayne; Lietz, Justin G.; Kurzak, Jakub; Malaya, Nicholas; Messer, Bronson; McDougall, Damon; Mullowney, Paul; Nichols, Stephen; Norman, Matthew; Papatheodore, Thomas; Rood, Jon; Roth, Philip C.; Sreepathi, Sarat; White III, James; Wolfe, Noah

doi:10.1145/3581784.3607065

Experiences Readying Applications for Exascale

Conference · 11 November 2023

DOI:https://doi.org/10.1145/3581784.3607065· OSTI ID:2283029

Bauman, Paul T.; Budiardja, Reuben D.; Bykov, Dmytro; Chalmers, Noel; Chen, Jacqueline; Curtis, Nicholas; ; Eisenbach, Markus; Esclapez, Lucas; Fanfarillo, Alessandro; Freitag, William; Frontiere, Nicholas; Georgiadou, Antigoni; Glenski, Joseph; Gottiparthi, Kalyana; ; Jansen, Gustav R.; Joubert, Wayne; Lietz, Justin G.; Kurzak, Jakub more »

The advent of Exascale computing invites an assessment of existing best practices for developing application readiness on the world's largest supercomputers. This work details observations from the last four years in preparing scientific applications to run on the Oak Ridge Leadership Computing Facility's (OLCF) Frontier system. This paper addresses a range of topics in software including programmability, tuning, and portability considerations that are key to moving applications from existing systems to future installations. A set of representative workloads provides case studies for general system and software testing. We evaluate the use of early access systems for development across several generations of hardware. Finally, we discuss how best practices were identified and disseminated to the community through a wide range of activities including user-guides and trainings. We conclude with recommendations for ensuring application readiness on future leadership computing systems.

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Research Organization:: National Renewable Energy Laboratory (NREL), Golden, CO (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Advanced Scientific Computing Research (ASCR)

DOE Contract Number:: AC36-08GO28308

OSTI ID:: 2283029

Report Number(s):: NREL/CP-2C00-85977; MainId:86750; UUID:84d7a168-ae61-48be-bc84-cca7e7ce19f8; MainAdminID:70599

Resource Relation:: Conference: Presented at the International Conference for High Performance Computing, Networking, Storage, and Analysis, 12-17 November 2023, Denver, Colorado

Country of Publication:: United States

Language:: English

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