Articles | Volume 10, issue 6
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

Model code and software

rpe v5 A. Dawson and P. Düben

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.