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In October 2013 CSCS installed the first hybrid Cray XC-30 system, dubbed Piz Daint. This system features the power management database (PMDB), that was recently introduced by Cray to collect detailed power consumption information in a non-intrusive manner. Power measurements are taken on each node, with additional measurements for the Aries network and(More)
We summarize the results of porting the numerical weather simulation code COSMO to different hybrid Cray HPC systems. COSMO was written in Fortran with MPI, and the aim of the refactoring was to support both many-core systems and GPU-accelerated systems with minimal disruption to the user community. With this in mind, different approaches were taken to(More)
We study the energy used by a production-level regional climate and weather simulation code on a distributed memory system with hybrid CPU-GPU nodes. The code is optimised for both processor architectures, for which we investigate both time and energy to solution. Operational constraints for time to solution can be met with both processor types, although on(More)
© The Author(s) 2017. This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the(More)
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