utils

Utility functions

enum_from_string(enum_type, name)

Get an the value of enum_type, whose name is given by the String (or Symbol) name.

Returns nothing if the name is not found.

get_CFL!(CFL, speed, coord)

Calculate the CFL factor 'speed/(grid spacing)' (with no prefactor) corresponding to advection speed speed for advection. Note that moment_kinetics is set up so that dimension in which advection happens is the first dimension of speed - coord is the coordinate corresponding to this dimension.

The result is written in CFL. This function is only intended to be used in post-processing.

Append a number to the filename, to get a new, non-existing filename to backup the file to.

get_default_restart_filename(io_input, prefix; error_if_no_file_found=true)

Get the default name for the file to restart from, using the input from io_input.

prefix gives the type of file to open, e.g. "moments", "dfns", or "initial_electron".

If no matching file is found, raise an error unless error_if_no_file_found=false is passed, in which case no error is raised and instead the function returns nothing.

get_minimum_CFL_neutral_vz(speed, vz)

Calculate the minimum (over a shared-memory block) of the CFL factor 'speed/(grid spacing)' (with no prefactor) corresponding to advection speed speed for advection of neutrals in the vz direction.

Reduces the result over the shared-memory block (handling distributed parallelism is left to the calling site). The result is only to be used on rank-0 of the shared-memory block.

get_minimum_CFL_neutral_z(speed, z)

Calculate the minimum (over a shared-memory block) of the CFL factor 'speed/(grid spacing)' (with no prefactor) corresponding to advection speed speed for advection of neutrals in the z direction.

Reduces the result over the shared-memory block (handling distributed parallelism is left to the calling site). The result is only to be used on rank-0 of the shared-memory block.

get_minimum_CFL_vpa(speed, vpa)

Calculate the minimum (over a shared-memory block) of the CFL factor 'speed/(grid spacing)' (with no prefactor) corresponding to advection speed speed for advection in the vpa direction.

Reduces the result over the shared-memory block (handling distributed parallelism is left to the calling site). The result is only to be used on rank-0 of the shared-memory block.

get_minimum_CFL_z(speed, z)

Calculate the minimum (over a shared-memory block) of the CFL factor 'speed/(grid spacing)' (with no prefactor) corresponding to advection speed speed for advection in the z direction.

Reduces the result over the shared-memory block (handling distributed parallelism is left to the calling site). The result is only to be used on rank-0 of the shared-memory block.

get_prefix_iblock_and_move_existing_file(restart_filename, output_dir)

Move restart_filename to a backup location (if it is in output_dir), returning a prefix and block-index (which might be nothing) which can be used to open the file for reloading variables.

get_unnormalized_parameters(input::Dict)
get_unnormalized_parameters(input_filename::String)

Get many parameters for the simulation setup given by input or in the file input_filename, in SI units and eV, returned as an OrderedDict.

Dict merge function for named keyword arguments for case when input Dict is a mixed Dict of Dicts and non-Dict float/int/string entries, and the keyword arguments are also a mix of Dicts and non-Dicts

print_unnormalized_parameters(input)

Print many parameters for the simulation setup given by input (a Dict of parameters or a String giving a filename), in SI units and eV.

recursive_merge(a, b)

Merge two AbstractDicts a and b. Any elements that are AbstractDicts are also merged (rather than just replacing with the entry in b).

to_hours(x::T) where {T<:TimePeriod}

Convert a time period x to seconds

to_minutes(x::T) where {T<:TimePeriod}

Convert a time period x to seconds

to_seconds(x::T) where {T<:TimePeriod}

Convert a time period x to seconds