Articles | Volume 13, issue 4
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, Marshall Ward, and Ben Evans

Model code and software

NOAA-GFDL/FMS: Parallel netCDF Support (Version parallel_NCDF) M. Ward and R. Yang

anuryang/mom5_parallel_io_config_scripts: v0.4 (Version v0.4) R. Yang

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.