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171 lines
12 KiB
Python
171 lines
12 KiB
Python
#!/usr/bin/env python3
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# -*- coding: utf-8 -*-
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"""
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Created on Fri Mar 4 13:43:40 2022
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@author: ben
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"""
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from pathlib import Path
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from directories import swift_output_basedir, swift_mon_test_basedir
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from sys import argv
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def create_dir_and_write_params_swift(Nres: int, Lbox: float, waveform: str, output_basedir: Path):
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# create directory if it doesn't exist already
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outputdir = output_basedir / f"{waveform}_{Nres}_{Lbox:.0f}"
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if outputdir.exists():
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print(outputdir, "already exists. Skipping...")
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else:
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print("creating", outputdir)
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outputdir.mkdir()
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# write param file there:
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param_script = f"""
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# Define some meta data about the simulation.
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MetaData:
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run_name: mon_test_{waveform}_{Nres}_{Lbox:.0f}
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# Define the system of units to use internally.
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InternalUnitSystem:
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UnitMass_in_cgs: 1.98848e43 # 10^10 M_sun in grams
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UnitLength_in_cgs: 3.08567758e24 # 1 Mpc in centimeters
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UnitVelocity_in_cgs: 1e5 # 1 km/s in centimeters per second
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UnitCurrent_in_cgs: 1 # 1 Ampere
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UnitTemp_in_cgs: 1 # 1 Kelvin
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# Values of some physical constants
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#PhysicalConstants:
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# G: 6.67408e-8 # (Optional) Overwrite the value of Newton's constant used internally by the code.
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# Cosmological parameters # update according to monofonic output
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Cosmology:
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h: 0.67742 # Reduced Hubble constant
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a_begin: 0.02 # Initial scale-factor of the simulation, z = 49
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a_end: 1.0 # Final scale factor of the simulation, z = 0
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Omega_cdm: 0.2610089 # CDM density parameter, new: Omega_m = _cdm + _b (w/o neutrinos)
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Omega_lambda: 0.690021 # Dark-energy density parameter
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Omega_b: 0.0488911 # Baryon density parameter
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# Parameters for the self-gravity scheme
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Gravity:
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mesh_side_length: {Nres * 2}# Number of cells along each axis for the periodic gravity mesh (must be even).
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eta: 0.025 # Constant dimensionless multiplier for time integration.
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MAC: adaptive # Choice of mulitpole acceptance criterion: 'adaptive' OR 'geometric'.
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epsilon_fmm: 0.001 # Tolerance parameter for the adaptive multipole acceptance criterion.
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theta_cr: 0.7 # Opening angle for the purely gemoetric criterion.
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# use_tree_below_softening: 0 # (Optional) Can the gravity code use the multipole interactions below the softening scale?
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# allow_truncation_in_MAC: 0 # (Optional) Can the Multipole acceptance criterion use the truncated force estimator?
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comoving_DM_softening: {Lbox / Nres / 30} # Comoving Plummer-equivalent softening length for DM particles (in internal units).
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max_physical_DM_softening: {Lbox / Nres / 30} # Maximal Plummer-equivalent softening length in physical coordinates for DM particles (in internal units). #should work b/c Lbox is given in Mpc=internal unit
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rebuild_frequency: 0.01 # (Optional) Frequency of the gravity-tree rebuild in units of the number of g-particles (this is the default value).
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a_smooth: 1.25 # (Optional) Smoothing scale in top-level cell sizes to smooth the long-range forces over (this is the default value).
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r_cut_max: 4.5 # (Optional) Cut-off in number of top-level cells beyond which no FMM forces are computed (this is the default value).
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r_cut_min: 0.1 # (Optional) Cut-off in number of top-level cells below which no truncation of FMM forces are performed (this is the default value).
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# FOF group finding parameters
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FOF:
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basename: fof_output # Filename for the FOF outputs (Unused when FoF is only run to seed BHs).
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scale_factor_first: 0.91 # Scale-factor of first FoF black hole seeding calls (needed for cosmological runs).
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delta_time: 1.005 # Time between consecutive FoF black hole seeding calls.
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min_group_size: 256 # The minimum no. of particles required for a group.
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linking_length_ratio: 0.2 # Linking length in units of the main inter-particle separation.
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seed_black_holes_enabled: 0 # Enable (1) or disable (0) seeding of black holes in FoF groups
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dump_catalogue_when_seeding: 0 # Enable (1) or disable (0) dumping a group catalogue when runnning FOF for seeding purposes.
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absolute_linking_length: -1. # (Optional) Absolute linking length (in internal units). When not set to -1, this will overwrite the linking length computed from 'linking_length_ratio'.
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group_id_default: 2147483647 # (Optional) Sets the group ID of particles in groups below the minimum size. Defaults to 2^31 - 1 if unspecified. Has to be positive.
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group_id_offset: 1 # (Optional) Sets the offset of group ID labeling. Defaults to 1 if unspecified.
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# Parameters governing the time integration (Set dt_min and dt_max to the same value for a fixed time-step run.)
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TimeIntegration:
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dt_min: 1e-6 # The minimal time-step size of the simulation (in internal units).
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dt_max: 0.025 # The maximal time-step size of the simulation (in internal units).
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# Parameters governing the snapshots
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Snapshots:
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basename: output # Common part of the name of output files.
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# subdir: dir # (Optional) Sub-directory in which to write the snapshots. Defaults to "" (i.e. the directory where SWIFT is run).
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scale_factor_first: 0.1 # (Optional) Scale-factor of the first snapshot if cosmological time-integration.
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delta_time: 0.01 # Time difference between consecutive outputs (in internal units)
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# invoke_stf: 0 # (Optional) Call VELOCIraptor every time a snapshot is written irrespective of the VELOCIraptor output strategy.
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invoke_fof: 1 # (Optional) Call FOF every time a snapshot is written
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# compression: 0 # (Optional) Set the level of GZIP compression of the HDF5 datasets [0-9]. 0 does no compression. The lossless compression is applied to *all* the fields.
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# distributed: 0 # (Optional) When running over MPI, should each rank write a partial snapshot or do we want a single file? 1 implies one file per MPI rank.
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# UnitMass_in_cgs: 1 # (Optional) Unit system for the outputs (Grams)
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# UnitLength_in_cgs: 1 # (Optional) Unit system for the outputs (Centimeters)
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# UnitVelocity_in_cgs: 1 # (Optional) Unit system for the outputs (Centimeters per second)
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# UnitCurrent_in_cgs: 1 # (Optional) Unit system for the outputs (Amperes)
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# UnitTemp_in_cgs: 1 # (Optional) Unit system for the outputs (Kelvin)
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output_list_on: 1 # (Optional) Enable the output list
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output_list: {swift_mon_test_basedir}/snap_times.txt # (Optional) File containing the output times (see documentation in "Parameter File" section)
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# select_output_on: 0 # (Optional) Enable the output selection behaviour
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# select_output: selectoutput.yml # (Optional) File containing information to select outputs with (see documentation in the "Output Selection" section)
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# Parameters governing the conserved quantities statistics
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Statistics:
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delta_time: 1.1 # Time between statistics output
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scale_factor_first: 0.1 # (Optional) Scale-factor of the first statistics dump if cosmological time-integration.
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energy_file_name: statistics # (Optional) File name for statistics output
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timestep_file_name: timesteps # (Optional) File name for timing information output. Note: No underscores "_" allowed in file name
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output_list_on: 1 # (Optional) Enable the output list
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output_list: {swift_mon_test_basedir}/snap_times.txt # (Optional) File containing the output times (see documentation in "Parameter File" section)
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# Parameters related to the initial conditions
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InitialConditions:
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file_name: {swift_output_basedir}/{waveform}_{Nres}_{Lbox:.0f}/ics_{waveform}_{Nres}_{Lbox:.0f}.hdf5 # The file to read
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periodic: 1 # Are we running with periodic ICs?
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cleanup_h_factors: 0 # (Optional) Clean up the h-factors used in the ICs (e.g. in Gadget files).
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cleanup_velocity_factors: 0 # (Optional) Clean up the scale-factors used in the definition of the velocity variable in the ICs (e.g. in Gadget files).
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cleanup_smoothing_lengths: 0 # (Optional) Clean the values of the smoothing lengths that are read in to remove stupid values. Set to 1 to activate.
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smoothing_length_scaling: 1. # (Optional) A scaling factor to apply to all smoothing lengths in the ICs.
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replicate: 1 # (Optional) Replicate all particles along each axis a given integer number of times. Default 1.
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remap_ids: 0 # (Optional) Remap all the particle IDs to the range [1, NumPart].
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metadata_group_name: ICs_parameters # (Optional) Copy this HDF5 group from the initial conditions file to all snapshots, if found
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# Parameters controlling restarts
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Restarts:
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enable: 1 # (Optional) whether to enable dumping restarts at fixed intervals.
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save: 0 # (Optional) whether to save copies of the previous set of restart files (named .prev)
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# onexit: 0 # (Optional) whether to dump restarts on exit (*needs enable*)
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subdir: restart # (Optional) name of subdirectory for restart files.
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basename: restart # (Optional) prefix used in naming restart files.
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delta_hours: 2.0 # (Optional) decimal hours between dumps of restart files.
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stop_steps: 100 # (Optional) how many steps to process before checking if the <subdir>/stop file exists. When present the application will attempt to exit early, dumping restart files first.
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max_run_time: 24.0 # (optional) Maximal wall-clock time in hours. The application will exit when this limit is reached.
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# resubmit_on_exit: 0 # (Optional) whether to run a command when exiting after the time limit has been reached.
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# resubmit_command: ./resub.sh # (Optional) Command to run when time limit is reached. Compulsory if resubmit_on_exit is switched on. Note potentially unsafe.
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# Parameters governing domain decomposition
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# DomainDecomposition:
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# initial_type: memory # (Optional) The initial decomposition strategy: "grid",
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# # "region", "memory", or "vectorized".
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# initial_grid: [10,10,10] # (Optional) Grid sizes if the "grid" strategy is chosen.
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# synchronous: 0 # (Optional) Use synchronous MPI requests to redistribute, uses less system memory, but slower.
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# repartition_type: fullcosts # (Optional) The re-decomposition strategy, one of:
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# # "none", "fullcosts", "edgecosts", "memory" or
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# # "timecosts".
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# trigger: 0.05 # (Optional) Fractional (<1) CPU time difference between MPI ranks required to trigger a
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# # new decomposition, or number of steps (>1) between decompositions
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# minfrac: 0.9 # (Optional) Fractional of all particles that should be updated in previous step when
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# # using CPU time trigger
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# usemetis: 0 # Use serial METIS when ParMETIS is also available.
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# adaptive: 1 # Use adaptive repartition when ParMETIS is available, otherwise simple refinement.
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# itr: 100 # When adaptive defines the ratio of inter node communication time to data redistribution time, in the range 0.00001 to 10000000.0.
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# # Lower values give less data movement during redistributions, at the cost of global balance which may require more communication.
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# use_fixed_costs: 0 # If 1 then use any compiled in fixed costs for
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# # task weights in first repartition, if 0 only use task timings, if > 1 only use
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# # fixed costs, unless none are available
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"""
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with (outputdir / f"{waveform}_{Nres}_{Lbox:.0f}_param.yml").open("w") as f:
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f.write(param_script)
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if __name__ == "__main__":
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create_dir_and_write_params_swift(
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Nres=int(argv[1]),
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Lbox=float(argv[2]),
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waveform=argv[3],
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output_basedir=swift_output_basedir
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)
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