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DTSTAMP:20230831T095746Z
LOCATION:Dischma
DTSTART;TZID=Europe/Stockholm:20230627T173000
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UID:submissions.pasc-conference.org_PASC23_sess131_msa192@linklings.com
SUMMARY:Adaptation of ECMWF’s Integrated Forecasting System to GPU-Acceler
 ated EuroHPC Systems
DESCRIPTION:Minisymposium\n\nBalthasar Reuter and Michael Lange (ECMWF)\n\
 nThe European Commission’s Destination Earth programme is an ongoing effor
 t to create digital replicas of the Earth system, with two high-priority D
 igital Twins (DT) available by the end of the first phase in 2024 that are
  set to run on pre-Exascale systems of the EuroHPC Joint Undertaking (JU).
  ECMWF’s Integrated Forecasting System (IFS) underpins the Continuous Extr
 emes DT and is used as one of two Earth-system models in the Climate Chang
 e Adaptation DT. The porting process of IFS and, in particular, the adapta
 tion to the AMD and NVIDIA GPUs present in the LUMI and LEONARDO supercomp
 uters of the JU, is intimately linked to an internal project at ECMWF that
  aims to achieve both compatibility and performance portability for accele
 rators and future architectures. A combination of data abstraction APIs, d
 omain-specific libraries, such as Atlas, and bespoke source-to-source tran
 slation tools, such as Loki, are employed to allow for an incremental adap
 tation of the code base alongside scientific development. This talk descri
 bes the effort of adapting IFS to the target systems, presents the current
  status and discusses challenges and lessons learned in the process.\n\nDo
 main: Climate, Weather and Earth Sciences\n\nSession Chair: Balthasar Reut
 er (ECMWF)
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