Articles | Volume 13, issue 4
Geosci. Model Dev., 13, 1885–1902, 2020
https://doi.org/10.5194/gmd-13-1885-2020

Special issue: The Australian Community Climate and Earth System Simulator:...

Geosci. Model Dev., 13, 1885–1902, 2020
https://doi.org/10.5194/gmd-13-1885-2020

Development and technical paper 16 Apr 2020

Development and technical paper | 16 Apr 2020

Parallel I∕O in Flexible Modelling System (FMS) and Modular Ocean Model 5 (MOM5)

Rui Yang et al.

Model code and software

NOAA-GFDL/FMS: Parallel netCDF Support (Version parallel_NCDF) M. Ward and R. Yang https://doi.org/10.5281/zenodo.3700099

anuryang/mom5_parallel_io_config_scripts: v0.4 (Version v0.4) R. Yang https://doi.org/10.5281/zenodo.3710732

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Short summary
Parallel I/O is implemented in the Modular Ocean Model (MOM) with optimal performance over a range of tuning parameters of model configuration, netCDF, MPI-IO and Lustre filesystem. The scalable parallel I/O performance is observed at 0.1° resolution global model, and it could achieve up to 60 times faster in write speed relative to serial single-file I/O running on 960 PEs.