# Define the system of units to use internally.
InternalUnitSystem:
  UnitMass_in_cgs:     1.988409870698051e+43   # 10^10 solar masses 
  UnitLength_in_cgs:   3.0856775814913673e+21  # 1 kpc 
  UnitVelocity_in_cgs: 1e5   # km/s
  UnitCurrent_in_cgs:  1   # Amperes
  UnitTemp_in_cgs:     1   # Kelvin

# Parameters for the self-gravity scheme
Gravity:
  MAC:                           adaptive  # Choice of mulitpole acceptance criterion: 'adaptive' OR 'geometric'.
  epsilon_fmm:                   0.001     # Tolerance parameter for the adaptive multipole acceptance criterion.
  theta_cr:                      0.7       # Opening angle for the purely gemoetric criterion.
  eta:          0.025               # Constant dimensionless multiplier for time integration.
  theta:        0.7                 # Opening angle (Multipole acceptance criterion).
  max_physical_baryon_softening: 0.35  # Physical softening length (in internal units)
  mesh_side_length:        32

# Parameters governing the time integration (Set dt_min and dt_max to the same value for a fixed time-step run.)
TimeIntegration:
  time_begin:        0.    # The starting time of the simulation (in internal units).
  time_end:          0.5   # 500 Myr # The end time of the simulation (in internal units).
  dt_min:            1e-10  # The minimal time-step size of the simulation (in internal units).
  dt_max:            1e-2  # The maximal time-step size of the simulation (in internal units).

# Parameters governing the snapshots
Snapshots:
  subdir: snap
  basename:   snapshot      # Common part of the name of output files
  time_first: 0. # (Optional) Time of the first output if non-cosmological time-integration (in internal units)
  delta_time: 1e-2        # Time difference between consecutive outputs (in internal units)

Scheduler:
  cell_extra_gparts: 10000      # (Optional) Number of spare sparts per top-level allocated at rebuild time for on-the-fly creation.
  cell_extra_sinks: 10000       # (Optional) Number of spare sparts per top-level allocated at rebuild time for on-the-fly creation.
  cell_extra_sparts: 10000      # (Optional) Number of spare sparts per top-level allocated at rebuild time for on-the-fly creation.
  max_top_level_cells: 3        #
  dependency_graph_frequency: 0  # (Optional) Dumping frequency of the dependency graph. By default, writes only at the first step.


# Parameters governing the conserved quantities statistics
Statistics:
  delta_time:           1e-3     # Time between statistics output
  time_first:             0.     # (Optional) Time of the first stats output if non-cosmological time-integration (in internal units)

# Parameters related to the initial conditions
InitialConditions:
  file_name:          ics.hdf5
  periodic:                    1    # Are we running with periodic ICs?

# Parameters for the hydrodynamics scheme
SPH:
  resolution_eta:        1.2348   # Target smoothing length in units of the mean inter-particle separation (1.2348 == 57Ngbs with the Wendland C2 kernel).
  # resolution_eta:        1.55   # Double the number of neighbours  
  CFL_condition:         0.2      # Courant-Friedrich-Levy condition for time integration.
  h_max:                 250.
  minimal_temperature:   1

BasicSink:
  use_nibbling: 1
  min_gas_mass_for_nibbling_Msun: 5e4 # half the gas particle mass in msun