Articles | Volume 10, issue 6
https://doi.org/10.5194/gmd-10-2221-2017
https://doi.org/10.5194/gmd-10-2221-2017
Development and technical paper
 | 
16 Jun 2017
Development and technical paper |  | 16 Jun 2017

rpe v5: an emulator for reduced floating-point precision in large numerical simulations

Andrew Dawson and Peter D. Düben

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Short summary
Weather and climate models must become more efficient if they continue growing in complexity. One option for reducing computational cost is to reduce numerical precision. We present a tool that allows users to study how models perform with reduced numerical precision. The tool is applied to a geophysical use case where precision is heavily reduced while maintaining suitable accuracy. The tool can be applied to other models to determine whether they can be made more computationally efficient.