Multicore and Accelerator Development for a Leadership-Class Stellar Astrophysics Code

Conference · Tue Jan 01 00:00:00 EST 2013

OSTI ID:1092221

Messer, Bronson ^[1]; Harris, James A ^[1]; Parete-Koon, Suzanne T ^[1]; Chertkow, Merek A ^[1]

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1. ORNL

We describe recent development work on the core-collapse supernova code CHIMERA. CHIMERA has consumed more than 100 million cpu-hours on Oak Ridge Leadership Computing Facility (OLCF) platforms in the past 3 years, ranking it among the most important applications at the OLCF. Most of the work described has been focused on exploiting the multicore nature of the current platform (Jaguar) via, e.g., multithreading using OpenMP. In addition, we have begun a major effort to marshal the computational power of GPUs with CHIMERA. The impending upgrade of Jaguar to Titan a 20+ PF machine with an NVIDIA GPU on many nodes makes this work essential.

• Research Organization: Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). National Center for Computational Sciences (NCCS)
• Sponsoring Organization: USDOE Office of Science (SC)
• DOE Contract Number: DE-AC05-00OR22725
• OSTI ID: 1092221
• Resource Relation: Conference: PARA 2012, Helsinki, Finland, 20120611, 20120611
• Country of Publication: United States
• Language: English