# Changes between Version 5 and Version 6 of WRF4Gexperiment_wrf4g

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Timestamp:
Sep 6, 2011 6:51:32 PM (11 years ago)
Comment:

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 v5 == Debugging == * '''clean_after_run:''' binary flag (0: no, 1: yes) indicating whether heavy-staff of the simulation (g.e.: {{{wrf.exs, rsl.}}}) should be removed from '{{{${WRF4G_RUN_LOCAL}}}}'. It should be desirable for debugging purposes the maintenance of these files on running place. (Default value is 1) * '''save_wps:''' binary flag (0: no, 1: yes) indicating whether boundary and initial conditions ({{{real.exe}}} output) should be preserved. They will be used if experiment launched again. (Default value is 0) * '''clean_after_run:''' binary flag (0: no, 1: yes) indicating whether the heavy-stuff of the simulation (g.e.: {{{wrf.exs, rsl.}}}) should be removed from '{{{${WRF4G_RUN_LOCAL}}}}'. The maintenance of these files on running place could be desirable for debugging purposes. (Default value is 1) * '''save_wps:''' binary flag (0: no, 1: yes) indicating whether boundary and initial conditions ({{{real.exe}}} output) should be preserved. They will be used if the experiment launched again. (Default value is 0) == WRF-namelist parameters == User provides namelist values. They will be over-written on {{{multiple_parameters}}} experiments (only the included parameters). User can modify any of the paramters of the namelist. It has to be the same name as in the {{{namelist.input}}} with a prefix-flag and the record to its belongs * '''Single valued; NI_[namelist_parameter_name]_ _[record]:''' {{{NI}}} flag indicating that [namelist_parameter_name] of record [record] has a single value * '''One value per all domains; NIN_[namelist_parameter_name]_ _[record]:''' {{{NIN}}} flag indicating that [namelist_paramter_name] of record [record] has the same value for all the domains of the experiment * '''One value per domain; NIM_[namelist_name]_ _[record]:''' {{{NIM}}} flag indicating that [namelist_paramter_name] of record [record] has a different value value for each the domains of the experiment User provided namelist values. They will be over-written on {{{multiple_parameters}}} experiments (only the included parameters). User can modify any of the paramters of the namelist. The name must be the same of the {{{namelist.input}}} entry, with a prefix-flag and the record to where belongs. * '''Single valued; NI_[namelist_parameter_name]_ _[record]:''' {{{NI}}} flag indicating that [namelist_parameter_name] of record [record] has a single value. * '''One value per all domains; NIN_[namelist_parameter_name]_ _[record]:''' {{{NIN}}} flag indicating that [namelist_paramter_name] of record [record] has the same value for all the domains of the experiment. * '''One value per domain; NIM_[namelist_name]_ _[record]:''' {{{NIM}}} flag indicating that [namelist_paramter_name] of record [record] has a different value for each the domains of the experiment. == Others == * '''timestep_dxfactor:''' If present, the time step is computed as this fator times the dx in kilometers. Defaults to 6, as suggested by the WRF team for most applications. Under some circumstances (cfl problems) a lower value may be needed. In any case, the time step is adjusted to the higest value lower than {{{timestep_dxfactor}}} times {{{dx}}} fitting evenly in a 1 hour period. * '''timestep_dxfactor:''' If present, the time step is computed as this factor times dx, in kilometers. Defaults to 6, as suggested by the WRF team for most applications. Under some circumstances (cfl problems) a lower value may be needed. In any case, the time step is adjusted to the higest value lower than {{{timestep_dxfactor}}} times {{{dx}}} fitting evenly in a 1 hour period. is_continuous = 0 simulation_interval_h = 24 simulation_lenght_h = 168 # this 7 days in hours simulation_lenght_h = 168 # this is 7 days in hours }}} and the {{{wrf4g_submitter.sh}}} will setup 365 independent runs performing the 7-day forecasts which will be distributed in the grid or in your local cluster. and the {{{wrf4g_submitter.sh}}} will setup 365 independent runs performing the 7-day forecasts, which will be distributed in the grid or in your local cluster. === Multipleparameters runs === Multi-physics runs are activated when the {{{multiple_paramters}}} parameter is set to one. Three additional parameters allow you to configure the physics combinations to set up. Multi-physics runs are activated when the {{{multiple_paramters}}} parameter is set to one. Three additional parameters allow you to configure the physics combinations of your interest. This mode allows varying parameters in general, not necessarily physics options. For instance, if user would like to check WRF performance on domain MPI-decomposition, by settting: This mode allows varying parameters in general, not necessarily physics options. For instance, if user could be interested in checking WRF performance on domain MPI-decomposition, by settting: {{{ multiphysics_combinations = "1,4/4,1/2,2/-1,-1" }}} you can vary the domain decomposition and send an experiment with four realizations and the only difference is the way the MPI domains are partitioned. you can vary the domain decomposition and send an experiments with four realizations, and the only difference is the way the MPI domains are partitioned.