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Ready for the Frontier: Preparing Applications for the World’s First Exascale System

Publication Type
Conference Paper
Book Title
High Performance Computing. ISC High Performance 2023. Lecture Notes in Computer Science
Publication Date
Page Numbers
182 to 201
Publisher Location
Cham, Switzerland
Conference Name
ISC High Performance 2023
Conference Location
Hamburg, Germany
Conference Sponsor
Conference Date

Frontier, a supercomputer at the Oak Ridge Leadership Computing Facility (OLCF), debuted atop the Top500 list of the world’s most powerful supercomputers in June 2022 as the very first computer to produce exascale performance. Making sure scientific applications are optimized on this architecture is the critical link necessary to translate the newly available computational power into scientific insight and solutions. To that goal, the OLCF developed the Center for Accelerated Application Readiness (CAAR) program to ensure that a suite of highly optimized applications is ready for scientific runs at the onset of production operations for Frontier. This paper describes our experience in porting and optimizing such suite of applications in the OLCF’s CAAR program.