Abstract
This chapter describes the model speed and model in/out (I/O) efficiency of the high-resolution atmospheric general circulation model the Finite-volume Atmospheric Model of IAP/LASG (FAMIL), investigated at the National Supercomputer Center in Tianjin, China, on its Tianhe-1A supercomputer platform. A series of three-model-day simulations were conducted with the standard Aqua-Planet Experiment (APE) project, designed within FAMIL, to obtain time stamps for the calculation of model speed, simulation cost, and model I/O efficiency. The results of the simulation demonstrate that FAMIL has remarkable scalability below 3,456 and 6,144 cores; the lowest simulation costs were found to be 1,536 and 3,456 cores for 12.5 and 6.25 km resolutions, respectively. Furthermore, FAMIL has excellent I/O scalability and efficiencies of more than 80 and 99 % on 6 and 1,536 I/Os, respectively.
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