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les-io: an I/O benchmark using City-LES kernel
License: Apache License 2.0
This project forked from tsukuba-ccs/les-io
les-io: an I/O benchmark using City-LES kernel
License: Apache License 2.0
LES-IO Benchmark ================ LES-IO Benchmark is an I/O benchmark that consists of an I/O kernel of City-LES code [1] in MPI and netCDF. LES-IO Benchmark is executed in iprocs x jprocs MPI processes. The number of processes, problem sizes, and physics model options can be specified by the 'namelist.input' configuration file. It generates the following four kinds of three-dimensional meteorological data in the './output/' directory in the netCDF format; lesout_average.nc - average data in several time steps lesout_instant.nc - instant data at a time step lesout_integral.nc - integrated data in several time steps lesrst_restart.nc - restart data Installation ------------ See INSTALL. Configuration ------------- System configuration and simulation configuration can be specified by the `namelist.input` file. It consists of three sections; `parallel` : parallel execution option `domain` : domain size `physics` : physics model option `parallel` section iprocs : number of processes in the horizontal i direction. jprocs : number of processes in the horizontal j direction. Note. The total number of MPI processes is iprocs x jprocs. `domain` section ids : the start index of whole domain in i-direction. ide : the end index of whole domain in i-direction. jds : the start index of whole domain in j-direction. jde : the end index of whole domain in j-direction. kds : the start index of whole domain in k-direction. kde : the end index of whole domain in k-direction. num_soil : number of soil layers. Note. The domain size is (ide-ids+1) x (jde-jds+1) x (kde-kds+1). The (ide-ids+1) and (jde-jds+1) should be larger than iprocs and jprocs, respectively. num_soil option controls the number of soil layers in the model, which affects the size of restart data. The num_soil is only effective when soil_model is 1 in physics section. `physics` section soil_model : soil model 0 : no soil model 1 : use soil model mp_model : cloud microphysics model 0 : no cloud microphysics model 1 : use cloud microphysics model (warm rain model) 9 : use cloud microphysics model (bin model) Note. When soil_model is 1, the num_soil is effective in domain section. When mp_model is 1 or 9, the generated data includes the cloud data. References ---------- [1] Ikeda, R., H. Kusaka, S. Iizuka, T. Boku, Development of Urban Meteorological LES model for thermal environment at city scale, 9th International Conference for Urban Climate, Toulouse, France, 2015. External Link ------------- - Large Eddy Simulation (LES) Model http://www.geoenv.tsukuba.ac.jp/~kusakaken/index.php?id=534
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