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TZID:Europe/Stockholm
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DTSTART:19700308T020000
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BEGIN:VEVENT
DTSTAMP:20250822T115804Z
LOCATION:Room 5.0B56
DTSTART;TZID=Europe/Stockholm:20250618T093000
DTEND;TZID=Europe/Stockholm:20250618T100000
UID:submissions.pasc-conference.org_PASC25_sess110_msa157@linklings.com
SUMMARY:Accelerating Radiation on NVIDIA GPUs
DESCRIPTION:Anastasia Stulova, Dmitry Alexeev, and Lukas Mosimann (NVIDIA 
 Inc.)\n\nThis talk will provide valuable insights for developers and resea
 rchers in high-performance scientific computing with GPUs. We will explore
  the acceleration of radiation simulation using the ecRad code on NVIDIA G
 PUs, discussing the functional and performance-related modifications neede
 d for code parallelization and GPU offloading.\n\nKey optimization techniq
 ues for achieving high-performance will be highlighted, along with an in-d
 epth analysis of the performance portability of GPU-specific modifications
 . Additionally, we will examine important compiler features that help bala
 nce performance, portability, and productivity, showcasing practical appro
 aches to efficient GPU offloading. To offer a broader perspective, we will
  compare a fine-tuned OpenACC implementation with an optimized CUDA equiva
 lent, illustrating the above trade-offs with these two programming approac
 hes.\n\nDomain: Climate, Weather, and Earth Sciences, Computational Method
 s and Applied Mathematics\n\nSession Chairs: Michael Lange (ECMWF) and Bal
 thasar Reuter (ECMWF)\n\n
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