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

Yang, Rui; Ward, Marshall; Evans, Ben

doi:https://doi.org/10.5194/gmd-13-1885-2020

Articles | Volume 13, issue 4

https://doi.org/10.5194/gmd-13-1885-2020

© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

Special issue:

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

https://doi.org/10.5194/gmd-13-1885-2020

© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

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 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

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.