Plotfiles

Controlling PlotFile Generation

“Plotfiles” can be written very efficiently in parallel in a native AMReX format or in HDF5. They can also be written in NetCDF.

The following options in the inputs file control the generation of plotfiles.

Parameter	Definition	Acceptable Values	Default
remora.plotfile_type	AMReX or NETCDF	“amrex” or “netcdf / “NetCDF”	“amrex”
remora.write_history_file	do we write netcdf files at each timestep or one file for all timesteps?	false or true	false
remora.plot_file	prefix for plotfiles	String	“plt_”
remora.plot_int	how often (by level-0 time steps) to write plot files	Integer \(> 0\)	-1
remora.plot_vars	name of variables to include in plotfiles	list of names	None

The NeTCDF option is only available if REMORA has been built with USE_NETCDF enabled.
The write_history_file option is only available if plotfile_type = netcdf
If plotfile_type = netcdf and write_history_file = false, the frequency will be determined by plot_int
Velocity components are defined on faces within the REMORA code, but are averaged onto cell centers when written in amrex/native plotfiles. They are not averaged when writing NetCDF files.
File prefixes can include directories.

remora.plotfile_type = amrex
remora.plot_file = out/plt_run
remora.plot_int = 10

means that native plot files (actually directories) starting with the prefix “plt_run” will be generated every 10 level-0 time steps in the directory out. If using amrex format, that directory names will be plt_run00000, plt_run00010, plt_run00020, etc. If using NetCDF format, the names will have “.nc” appended.

AMReX plotfiles will contain data at all of the refinement levels. NetCDF files will not be output if there is more than one level.