path: root/param.ccl

# Parameter definitions for thorn GRHydro
# $Header$

shares:ADMBase

USES int initial_shift ""
{
}

USES KEYWORD metric_type ""
{
}
 
EXTENDS KEYWORD shift_evolution_method ""
{
  "Comoving" :: "Set the shift so the matter is approximately comoving"
}


#########################################
###  PARAMETRES SHARED FROM HydroBase ###
#########################################

shares: HydroBase

USES CCTK_INT timelevels
USES KEYWORD prolongation_type
USES INT hydro_excision
EXTENDS KEYWORD evolution_method ""
{
  "GRHydro" :: "Use GRHydro to evolve the hydro variables"
}
EXTENDS KEYWORD Bvec_evolution_method ""
{
  "GRHydro"      :: "Use GRHydro to evolve the MHD variables, evolving the Magnetic Field"
  "GRHydro_Avec" :: "Use GRHydro to evolve the MHD variables, evolving the Vector Potential"
}
EXTENDS KEYWORD Y_e_evolution_method ""
{
  "GRHydro" :: "Use GRHydro to evolve Y_e"
}
EXTENDS KEYWORD temperature_evolution_method ""
{
  "GRHydro" :: "Use GRHydro to evolve temperature"
}
EXTENDS KEYWORD entropy_evolution_method ""
{
  "GRHydro" :: "Use GRHydro to evolve entropy"
}
EXTENDS KEYWORD initial_Bvec ""
{
  "Bvec_from_Avec" :: "Calculate B^i for an initially specified A_i"
}

#########################################
###  PARAMETRES SHARED FROM MoL       ###
#########################################

shares: MethodOfLines

USES CCTK_INT MoL_Num_Evolved_Vars
USES CCTK_INT MoL_Num_Evolved_Vars_Slow
USES CCTK_INT MoL_Num_Constrained_Vars
USES CCTK_INT MoL_Num_SaveAndRestore_Vars
USES CCTK_INT MoL_Max_Evolved_Array_Size 
USES CCTK_INT MoL_Num_ArrayEvolved_Vars

shares:SpaceMask

USES boolean use_mask

shares: ADMMacros

USES INT spatial_order

#########################################
###  PARAMETRES SHARED FROM EOS_Omni  ###
#########################################

SHARES: EOS_Omni

USES REAL poly_k

restricted:

KEYWORD use_evolution_mask "Set this to 'always' to skip validity tests in regions where CarpetEvolutionMask::evolution_mask vanishes." STEERABLE=ALWAYS
{
  "always" :: "use the mask"
  "auto"   :: "check if CarpetEvolutionMask is active, then use the mask"
  "never"  :: "do not use the mask"
} "never"

BOOLEAN GRHydro_enable_internal_excision "Set this to 'false' to disable the thorn-internal excision." STEERABLE=ALWAYS
{
} "true"

CCTK_INT GRHydro_hydro_excision "Turns excision automatically on in HydroBase" ACCUMULATOR-BASE=HydroBase::hydro_excision
{
  1:1 :: "Only '1' allowed"
} 1

CCTK_INT GRHydro_MaxNumEvolvedVars "The maximum number of evolved variables used by GRHydro" ACCUMULATOR-BASE=MethodofLines::MoL_Num_Evolved_Vars
{
  0             :: "when using multirate"
  5:12		:: "dens scon[3] tau (B/A)vec[3] psidc ye entropy Aphi"
} 5

CCTK_INT GRHydro_MaxNumEvolvedVarsSlow "The maximum number of evolved variables used by GRHydro" ACCUMULATOR-BASE=MethodofLines::MoL_Num_Evolved_Vars_Slow
{
  0             :: "do not use multirate"
  5:12		:: "dens scon[3] tau (B/A)vec[3] psidc ye entropy Aphi"
} 0

#  7  primitives (rho,press,eps,w_lorentz,vel)
# 10  Tmunu
#  3  Bvec
#  1  tau (polytype EOS)
#  1  Y_e
#  1  temperature
#  1  entropy
#  3  comoving shift
#  3  lvel
#  3  local_shift
#  6  local_metric
#  6  local_extrinsic_curvature
#  3  lBvec
CCTK_INT GRHydro_MaxNumConstrainedVars "The maximum number of constrained variables used by GRHydro" ACCUMULATOR-BASE=MethodofLines::MoL_Num_Constrained_Vars
{
  7:48		:: "A small range, depending on testing or not"
} 37
 
CCTK_INT GRHydro_MaxNumSandRVars "The maximum number of save and restore variables used by GRHydro" ACCUMULATOR-BASE=MethodofLines::MoL_Num_SaveAndRestore_Vars
{
  0:16		:: "A small range, depending on testing or not"
} 16

keyword recon_method "Which reconstruction method to use" STEERABLE=RECOVER
{
  "tvd"	   :: "Slope limited TVD"
  "ppm"    :: "PPM reconstruction"
  "eno"    :: "ENO reconstruction"
  "weno"   :: "WENO reconstruction"
  "weno-z" :: "WENO-Z reconstruction"
  "mp5"    :: "MP5 reconstruction"
} "tvd"

keyword method_type "Which type of method to use"
{
  "RSA FV"        :: "Reconstruct-Solve-Average finite volume method"
  "Flux Split FD" :: "Finite difference using Lax-Friedrichs flux splitting"
} "RSA FV"


boolean check_for_trivial_rp "Do check for trivial Riemann Problem"
{
} "yes"

keyword recon_vars "Which type of variables to reconstruct"
{
  "primitive" 		:: "Reconstruct the primitive variables"
  "conservative" 	:: "Reconstruct the conserved variables"
} "primitive"

keyword tvd_limiter "Which slope limiter to use"
{
  "minmod" 	:: "Minmod"
  "vanleerMC2"	:: "Van Leer MC - Luca"
  "Superbee"	:: "Superbee"
} "minmod"

real myfloor "A minimum number for the TVD reconstruction routine"
{
  0.0:		:: "Must be positive"
} 1.e-10

boolean use_optimized_ppm "use C++ templated version of PPM. Experimental"
{
} "no"

boolean ppm_detect "Should the PPM solver use shock detection?"
{
} "no"

keyword ppm_flatten "Which flattening procedure should the PPM solver use?"
{
  "stencil_3"   :: "our flattening procedure, which requires only stencil 3 and which may work"
  "stencil_4"   :: "original C&W flattening procedure, which requires stencil 4"
} "stencil_3"

real ppm_epsilon "Epsilon for PPM zone flattening"
{
  0.0: 		:: "Must be positive. Default is from Colella & Woodward"
} 0.33

real ppm_omega1 "Omega1 for PPM zone flattening"
{
  : 		:: "Anything goes. Default is from Colella & Woodward"
} 0.75

real ppm_omega2 "Omega2 for PPM zone flattening"
{
  :		:: "Anything goes. Default is from Colella & Woodward"
} 10.0

real ppm_omega_tracer "Omega for tracer PPM zone flattening"
{
  :		:: "Anything goes. Default is from Plewa & Mueller"
} 0.50

real ppm_epsilon_shock "Epsilon for PPM shock detection"
{
  :		:: "Anything goes. Default is from Colella & Woodward"
} 0.01

real ppm_eta1 "Eta1 for PPM shock detection"
{
  :		:: "Anything goes. Default is from Colella & Woodward"
} 20.0

real ppm_eta2 "Eta2 for PPM shock detection"
{
  :		:: "Anything goes. Default is from Colella & Woodward"
} 0.05

real ppm_k0 "K0 for PPM shock detection"
{
  :		:: "Anything goes. Default suggested by Colella & Woodward is: (polytropic constant)/10.0"
} 0.2

real ppm_small "A floor used by PPM shock detection"
{
  0.0:1.0	:: "In [0,1]"
} 1.e-7

int ppm_mppm "Use modified (enhanced) ppm scheme"
{
  0:1 :: "0 (off, default) or 1 (on)" 
} 0

int ppm_mppm_debug_eigenvalues "write eigenvalues into debug grid variables"
{
  0:1 :: "0 (off, default) or 1 (on)" 
} 0

real mp5_alpha "alpha parameter for MP5 reconstruction"
{
  0:* :: "positive"
} 4.0

real mp5_eps "epsilon parameter for MP5 reconstruction"
{
  0:* :: "0.0 or very small and positive. 1e-10 is suggested by Suresh&Huynh. TOV star requires 0.0"
} 0.0


boolean use_enhanced_ppm "Use the enhanced ppm reconstruction method proposed by Colella & Sekora 2008 and McCorquodale & Colella 2011" STEERABLE=RECOVER
{
} no

int GRHydro_oppm_reflevel "Ref level where oPPM is used instead of ePPM (used with use_enhaced_ppm=yes)."
{
  -1:10 :: "0-10 (the reflevel number) or -1 (off)" 
} -1

real enhanced_ppm_C2 "Parameter for enhancecd ppm limiter. Default from McCorquodale & Colella 2011" STEERABLE=ALWAYS
{
   *:* :: "must be greater than 1. According to Colella&Sekora 2008, enhanced ppm is insensitive to C in [1.25,5]"
} 1.25

real enhanced_ppm_C3 "Parameter for enhancecd ppm limiter. Default from McCorquodale & Colella 2011" STEERABLE=ALWAYS
{
   0:* :: "must be greater than 0."
} 0.1

boolean reconstruct_Wv "Reconstruct the primitive velocity W_Lorentz*vel, rather than just vel." STEERABLE=ALWAYS
{
} no

int eno_order "The order of accuracy of the ENO reconstruction"
{
  1:*		:: "Anything above 1, but above 5 is pointless"
} 2

int WENO_order "The order of accuracy of the WENO reconstruction"
{
  5  :: "Fifth-order"
} 5

real weno_eps "WENO epsilon parameter"
{
  0:*  :: "small and positive"
} 1e-26

boolean weno_adaptive_epsilon "use modified smoothness indicators that take into account scale of solution (adaptive epsilon)"
{
} yes

keyword riemann_solver "Which Riemann solver to use" STEERABLE=always
{
  "Roe"		:: "Standard Roe solver"
  "Marquina"	:: "Marquina flux"
  "HLLE"	:: "HLLE"
  "LLF"	:: "Local Lax-Friedrichs (MHD only at the moment)"
} "HLLE"


keyword HLLE_type "Which HLLE type to use"
{
  "Standard"	:: "Standard HLLE solver"
  "Tadmor"	:: "Tadmor's simplification of HLLE"
} "Standard"



keyword left_eigenvectors "How to compute the left eigenvectors"
{
  "analytical"	:: "Analytical left eigenvectors"
  "numerical"	:: "Numerical left eigenvectors"
} "analytical"

keyword numerical_viscosity "How to compute the numerical viscosity"
{
  "fast"	:: "Fast numerical viscosity"
  "normal"	:: "Normal numerical viscosity"
} "fast"

boolean apply_H_viscosity "H viscosity is useful to fix the carbuncle instability seen at strong shocks"
{
} no

keyword bound "Which boundary condition to use - FIXME"
{
  "flat"	:: "Zero order extrapolation"
  "none"	:: "None"
  "static"	:: "Static, no longer supported"
  "scalar"	:: "Constant"
} "none"

int GRHydro_stencil "Width of the stencil"
{
  0:		:: "Must be positive"
} 2

keyword GRHydro_eos_type "Type of Equation of State"
{
  "Polytype"	:: "P = P(rho) or P = P(eps)"
  "General"	:: "P = P(rho, eps)"
} "General"

string GRHydro_eos_table "Name for the Equation of State"
{
  .*		:: "Can be anything"
} "Ideal_Fluid"


real GRHydro_eos_rf_prec "Precision to which root finding should be carried out" STEERABLE=ALWAYS
{
   (0.0:*       :: "anything larger than 0 goes"
} 1.0e-8

# cott@tapir.caltech.edu:
# The below parameter controls the handling of EOS_Omni keyerr=667
# failures. In these failures, no new temperature can be found for the
# eps it was called with. This may happen, for example, when a strong
# shock appears for the first time. Code checking this parameter will,
# if it is set to true, locally inject heat to fix the problem.
# This normally happens only very rarely, but one must monitor total energy
# conservation to check that this does ruin energy conservation.
boolean GRHydro_eos_hot_eps_fix "Activate quasi-failsafe mode for hot EOSs" STEERABLE=ALWAYS
{
} "no"

boolean GRHydro_eos_hot_prim2con_warn "Warn about temperature workaround in prim2con" STEERABLE=ALWAYS
{
} "yes"

boolean GRHydro_c2p_reset_eps_tau_hot_eos "As a last resort, reset tau" STEERABLE=ALWAYS
{
} "no"

boolean reconstruct_temper "if set to true, temperature will be reconstructed" STEERABLE=ALWAYS
{
} "no"
 
REAL GRHydro_hot_atmo_temp "Temperature of the hot atmosphere in MeV" STEERABLE=ALWAYS
{
 (0.0:*   :: "Larger than 0 MeV"
} 0.1e0

REAL GRHydro_max_temp "maximum temperature we allow" STEERABLE=ALWAYS
{
 (0.0:*   :: "Larger than 0 MeV"
} 90.0e0

REAL GRHydro_hot_atmo_Y_e "Y_e of the hot atmosphere" STEERABLE=ALWAYS
{
 0.0:*   :: "Larger than 0"
} 0.5e0

REAL GRHydro_Y_e_min "minimum allowed Y_e" STEERABLE=ALWAYS
{
 0.0:*   :: "Larger than or equal to zero"
} 0.0

REAL GRHydro_Y_e_max "maximum allowed Y_e" STEERABLE=ALWAYS
{
 0.0:*   :: "Larger than or equal to zero; 1 is default"
} 1.0


####################### Other Parameters ##############################

#Parameters controlling conservative <-> primitive change.
int GRHydro_c2p_warnlevel "Warnlevel for Con2Prim warnings" STEERABLE=ALWAYS
{
  0:1           :: "Either 0 or 1"
} 0

keyword GRHydro_c2p_failed_action "what to do when we detect a c2p failure"
{
  "abort"     :: "abort with error"
  "terminate" :: "request termination"
} "abort"

REAL sqrtdet_thr "Threshold to apply cons rescalings deep inside the horizon" STEERABLE=ALWAYS
{
 1.0:    :: "Larger values guarantees this sort of rescaling only deep inside the horizon"
 -1.0    :: "Do not apply limit"
} -1.0

REAL max_magnetic_to_gas_pressure_ratio "consider pressure to be magnetically dominated if magnetic pressure to gas pressure ratio is higher than this" STEERABLE=ALWAYS
{
  (0:*  :: "any positive value, eg. 100."
  -1.0  :: "disable"
} -1.0

boolean c2p_reset_pressure "If the pressure guess is unphysical should we recompute it?"
{
} "no"

real c2p_reset_pressure_to_value "The value to which the pressure is reset to when a failure occurrs in C2P"
{
  0: :: "greater than zero"
} 1.e-20

boolean c2p_resort_to_bisection "If the pressure guess is unphysical, should we try with bisection (slower, but more robust)" STEERABLE=ALWAYS
{
} no

real GRHydro_eps_min "Minimum value of specific internal energy - this is now only used in GRHydro_InitData's GRHydro_Only_Atmo routine"
{
 0: :: "Positive"
} 1.e-10

real GRHydro_perc_ptol "Tolerance for primitive variable solve (percent)" STEERABLE=ALWAYS
{
 0: :: "Do we really want both tolerances?"
} 1.e-8

real GRHydro_del_ptol "Tolerance for primitive variable solve (absolute)" STEERABLE=ALWAYS
{
  0: :: "Do we really want both tolerances?"
} 1.e-18

int GRHydro_countmax "Maximum number of iterations for Con2Prim solve"
{
  1:*		:: "Must be positive"
} 100

int GRHydro_countmin "Minimum number of iterations for Con2Prim solve"
{
  0:*		:: "Must be non negative"
} 1

int GRHydro_polish "Number of extra iterations after root found"
{
  0:*		:: "Must be non negative"
} 0

###Parameters for compact fluid objects

REAL GRHydro_rho_central "Central Density for Star"
{
  : :: ""
} 1.e-5

##Parameters for the atmosphere.

REAL tau_rel_min "A minimum relative tau (taumin = maxtau(t=0) * tau_rel_min) below which tau is reschaled"
{
  0: :: ""
} 1.e-10

REAL rho_abs_min "A minimum rho below which evolution is turned off (atmosphere). If negative, the relative minimum will be used instead." STEERABLE=recover
{
  -1.0: :: ""
} -1.0

REAL rho_rel_min "A minimum relative rho (rhomin = centden * rho_rel_min) below which evolution is turned off (atmosphere). Only used if rho_abs_min < 0.0" STEERABLE=recover
{
  0: :: ""
} 1.e-9

REAL initial_rho_abs_min "An absolute value for rho in the atmosphere. To be used by initial data routines only. Unused if negative."
{
  -1.0: :: ""
} -1.0

REAL initial_rho_rel_min "A relative (to the central density) value for rho in the atmosphere. To be used by initial data routines only. Unused if negative."
{
  -1.0: :: ""
} -1.0

REAL initial_atmosphere_factor "A relative (to the initial atmosphere) value for rho in the atmosphere. This is used at initial time only. Unused if negative."
{
  -1.0: :: ""
} -1.0

REAL rho_abs_min_after_recovery "A new absolute value for rho in the atmosphere. To be used after recovering. Unused if negative." STEERABLE=ALWAYS
{
  -1.0: :: ""
} -1.0

REAL GRHydro_atmo_tolerance "A point is set to atmosphere in the Con2Prim's if its rho < GRHydro_rho_min *(1+GRHydro_atmo_tolerance). This avoids occasional spurious oscillations in carpet buffer zones lying in the atmosphere (because prolongation happens on conserved variables)" STEERABLE=ALWAYS
{
   0.0: :: "Zero or larger. A useful value could be 0.0001"
}  0.0

REAL atmo_falloff_radius "The radius for which the atmosphere starts to falloff as (atmo_falloff_radius/r)**atmo_falloff_power"
{
  0:* :: "Anything positive"
} 50.0

REAL atmo_falloff_power "The power at which the atmosphere level falls off as (atmo_falloof_radius/r)**atmo_falloff_power"
{
  0:* :: "Anything positive"
} 0.0

REAL atmo_tolerance_radius "The radius for which the atmosphere tolerance starts to increase as (r/atmo_tolerance_radius)**atmo_tolerance_power"
{
  0:* :: "Anything positive"
} 50.0

REAL atmo_tolerance_power "The power at which the atmosphere tolerance increases as (r/atmo_tolerance_radius)**atmo_tolerance_power"
{
  0:* :: "Anything positive"
} 0.0

BOOLEAN wk_atmosphere "Use some of Wolfgang Kastauns atmosphere tricks"
{
} "no"

BOOLEAN Check_Rho_Minimum "Should a check on rho < GRHydro_rho_min be performed and written as WARNING level 2?"
{
} "no"

boolean EoS_Change "Recalculate fluid quantities if changing the EoS"
{
} "no"

keyword EoS_Change_type "Change polytropic K or Gamma?"
{
  "K"     :: "Change the K"
  "Gamma" :: "Change the Gamma"
  "GammaKS"  :: "Change K and Gamma, Shibata et al. 2004 3-D GR Core Collapse style"
} "Gamma"

real initial_Gamma "If changing Gamma, what was the value used in the initial data routine?"
{
  (0.0: :: "Positive"
} 1.3333

real initial_k "If changing K, what was the value used in the initial data routine?"
{
  (0.0: :: "Positive"
} 100.0

#If you want to use FishEye, you need the weighted fluxes

BOOLEAN use_weighted_fluxes "Weight the flux terms by the cell surface areas"
{
} "no"

#For the comoving shift 
  
real comoving_factor "Factor multiplying the velocity for the comoving shift"
{
  0.0:2.0 :: "[0,2] is allowed, but [0,1] is probably reasonable"
} 0.0

keyword comoving_attenuate "Which attenuation method for the comoving shift"
{
  "sqrt" :: "Multiply by sqrt(rho/rho_max)"
  "tanh" :: "Multiply by 1/2*(1+tanh(factor*(rho/rho_max - offset)))"
} "tanh"

keyword comoving_v_method "Which method for getting the radial velocity"
{
  "projected" :: "vr = x_i . v^i / r"
  "components" :: "vr = sqrt(v_i v^i)"
} "projected"

real comoving_tanh_factor "The factor in the above tanh attenuation"
{
  (0.0:* :: "Any positive number"
} 10.0

real comoving_tanh_offset "The offset in the above tanh attenuation"
{
  0.0:1.0 :: "Only makes sense in [0,1]"
} 0.05

int set_trivial_rp_grid_function "set gf for triv. rp (only for debugging)"
{
  0:1 :: "0 for no (default), 1 for yes"
} 0

#Advect a tracer?

boolean evolve_tracer "Should we advect tracers?"
{
} "no"

int number_of_tracers "Number of tracer variables to be advected"
{
  0:* :: "positive or zero"
} 0

boolean use_min_tracer "Should there be a floor on the tracer?"
{
} "no"

real min_tracer "The floor placed on the tracer"
{
  *:* :: "Anything"
} 0.0

#Track particles?
int number_of_particles "Number of particles to track" ACCUMULATOR-BASE=MethodOfLines::MoL_Max_Evolved_Array_Size
{
  0:* :: "0 switches off particle tracking"
} 0

int number_of_arrays "Number of arrays to evolve" ACCUMULATOR-BASE=MethodOfLines::MoL_Num_ArrayEvolved_Vars
{
  0:3           :: "Either zero or three, depending on the particles"
} 0

STRING particle_interpolator "What interpolator should be used for the particles"
{
  ".+"          :: "A valid interpolator name"
} "Lagrange polynomial interpolation"

CCTK_INT particle_interpolation_order "What order should be used for the particle interpolation"
{
  1:*           :: "A valid positive interpolation order"
} 2

#Finding the local gradient

keyword gradient_method "Which method is used to set GRHydro::DiffRho?"
{
  "First diff"    :: "Standard first differences"
  "Curvature"     :: "Curvature based method of Paramesh / FLASH"
  "Rho weighted"  :: "Based on the size of rho"
} "First diff"


# NaN detection level

INT GRHydro_NaN_verbose "The warning level for NaNs occuring within GRHydro" STEERABLE=always
{
  0:* :: "The warning level"
} 2

CCTK_REAL GRHydro_lorentz_overshoot_cutoff "Set the Lorentz factor to this value in case it overshoots (1/0)"
{
  0:* :: "Some big value"
} 1.e100

boolean clean_divergence "Use hyperbolic divergence cleaning"
{
} "no"

CCTK_REAL kap_dc "The kap parameter for divergence cleaning"
{
  0:* :: "Any non-negative value, but 1.0 to 10.0 seems preferred"
} 10.0

KEYWORD psidcspeed "Which speed to set for psidc"
{
  "char speed"  :: "Based on the characteristic speeds"
  "light speed" :: "Set the characteristic speeds to speed of light"
  "set speed"   :: "Manually set the characteristic speeds: [setcharmin,setcharmax]"
} "light speed"

CCTK_REAL setcharmax "Maximum characteristic speed for psidc if psidcspeed is set"
{
  0:1 :: "Any value smaller than speed of light"
} 1.0

CCTK_REAL setcharmin "Minimum characteristic speed for psidc if psidcspeed is set"
{
  -1:0 :: "Any value smaller than speed of light - sign should be negative"
} -1.0

BOOLEAN decouple_normal_Bfield "when using divergence cleaning properly decouple Bx,psidc subsystem"
{
} yes

boolean track_divB "Track the magnetic field constraint violations"
{
} "no"

boolean transport_constraints "Use constraint transport for magnetic field"
{
} "no"

boolean calculate_bcom  "Calculate the comoving contravariant magnetic 4-vector b^a?"
{
} "no"

############### Parameters for Avec evolution ###########################################

KEYWORD Avec_gauge "Which gauge condition to use when evolving the vector potential" 
{
  "algebraic"  :: "Algebraic gauge"
  "lorenz"     :: "Lorenz gauge"
} "lorenz"

############### Parameters for Tmunu damping (useful in atmosphere) #####################

CCTK_REAL Tmunu_damping_radius_min "damping radius at which we start to damp with a tanh function"
{
   -1  :: "damping switched off"
   0:* :: "damping radius at which we start to damp"
} -1


CCTK_REAL Tmunu_damping_radius_max "damping radius at which Tmunu becomes 0"
{
   -1  :: "damping switched off"
   0:* :: "greater than minimum radius above"
} -1


############### temporary parameters to be removed once connected issues are fixed.

boolean con2prim_oct_hack "Disregard c2p failures in oct/rotsym90 boundary cells with xyz < 0" STEERABLE=ALWAYS
{
} "no"

int GRHydro_c2p_warn_from_reflevel "Start warning on given refinement level and on higher levels" STEERABLE=ALWAYS
{
  0:           :: "Greater or equal to 0"
} 0



############### Optimization options ###################################################



# This can improve the performance on many cores, but may be dangerous 
# (it seems to work in simple testcases, but morde complicated settings may fail)
# If you encounter strange behavior, switch this OFF
BOOLEAN sync_conserved_only "Only sync evolved conserved quantities during evolution." STEERABLE = recover
{
} no


restricted:
# This uses the slow sector of MoL multirate methods.
# Since the CFL requirements for hydro are less demanding,
# it is possible to get a significant speed up by
# using a lower order time integration such as RK2, while the spacetime
# is still integrated with an RK4
BOOLEAN use_MoL_slow_multirate_sector "Whether to make use of MoL's slow multirate sector"
{
} no
private:



BOOLEAN verbose "Some debug output" STEERABLE = always
{
} no





############### Testing options ###################################################


# This constrains the flux velicity vectors to spherical symmetry.
# Only the radial contribution to the velocity vectors is considered.
# This is due to Kotake et al 2012.
BOOLEAN constrain_to_1D "Set fluid velocities to zero for non-radial motion"
{
} no