5:55 PM - 6:00 PM
[AAS02-P01] Multi-dimensional bin-microphysics model coupled with JMANHM
3-min talk in an oral session
Keywords:Multi-dimensional bin-microphysics, Non-hydrostatic regional model
The multi-dimensional bin-microphysics model has been developed by a domestic community of microphysics researchers in order to simulate cloud microphysical processes in detail. The model has three and five independent variables for representing physicochemical properties of liquid and solid hydrometeors, respectively. Each variable is discretized into a finite number of bins. All the discretized variables form multi-dimensional bin spaces. The properties of droplets are expressed as the spectra of mass values of pure water and two types of aerosol in the bin space. For solid hydrometeors, aspect ratio and volume are also considered as constituent parameters of bin space.
Program optimization has been done in terms of the process parallelization in the bin space in order to reduce the memory requirements for a process, since the single node memory is 16 GB in the K computer and the total memory requirement of the model easily exceeds the limit. In addition, the program has been modified for loop blocking and dimension reduction of work array to improve memory utilization. Performance investigation is going on for large-scale parallel computation with the model.
This study is supported by the High Performance Computing Infrastructure (HPCI) Strategic Program for Innovative Research (SPIRE) under the management of the Ministry of Education, Culture, Sports, Science and Technology.
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