%------------------------------------------------------------------------- %---- This file contains the input parameters needed at run-time for % simulations. It is based on and closely resembles the GADGET-3 % parameterfile (format of which and parsing routines written by % Volker Springel [volker.springel@h-its.org]). It has been updated % with new naming conventions and additional variables as needed by % Phil Hopkins [phopkins@caltech.edu] for GIZMO. %------------------------------------------------------------------------- %---- Relevant files %InitCondFile ./ics_gadget_B100_N512_TL00029_baryon_toz0_HR.dat InitCondFile ./snapdir_230/snapshot_230 OutputDir ./ %---- File formats ICFormat 3 %1 % 1=binary, 3=hdf5, 4=cluster SnapFormat 3 % 1=binary, 3=hdf5 %---- Output parameters RestartFile restart SnapshotFileBase snapshot OutputListOn 1 % =1 to use list in "OutputListFilename" OutputListFilename snapshot_scale-factors.txt % list of times for snaps NumFilesPerSnapshot 8 NumFilesWrittenInParallel 16 % must be < N_processors & power of 2 %---- Output frequency TimeOfFirstSnapshot 0.01 TimeBetSnapshot 1.1 TimeBetStatistics 0.05 %---- CPU-time limits TimeLimitCPU 2592000 %172800 % in seconds CpuTimeBetRestartFile 7200 % in seconds ResubmitOn 0 ResubmitCommand ./resubmit_comet %----- Memory alloction MaxMemSize 60000 %5000 % sets maximum memory use in MByte; increase for multi-threading PartAllocFactor 5 % memory load allowed for better cpu balance BufferSize 400 %100 % in MByte %---- Characteristics of run TimeBegin 0.008264462809917356 % Begin of the simulation TimeMax 1.0 % End of the simulation %---- Cosmological parameters ComovingIntegrationOn 1 % is it cosmological? (yes=1, no=0) Omega0 0.2821 OmegaLambda 0.7179 OmegaBaryon 0.0461 HubbleParam 0.697 BoxSize 100000.0 %---- Accuracy of time integration MaxSizeTimestep 0.005 MinSizeTimestep 1.0e-9 %---- Tree algorithm, force accuracy, domain update frequency TreeDomainUpdateFrequency 0.0005 %0.005 % 0.0005-0.05, dept on core+particle number %---- System of units UnitLength_in_cm 3.085678e21 % 1.0 kpc/h UnitMass_in_g 1.989e43 % 1.0e10 solar masses/h UnitVelocity_in_cm_per_s 1.0e5 % 1 km/sec UnitMagneticField_in_gauss 1.0 % 1 gauss GravityConstantInternal 0 % calculated by code if =0 %---- Initial temperature & temperature floor InitGasTemp 0 % set by IC file if =0 MinGasTemp 10. % don't set <10 in explicit feedback runs, otherwise 0 %---- Density/volume estimation (kernel) DesNumNgb 32 % 32 for standard kernel, 60-114 for quintic MaxHsml 1.0e10 % minimum gas kernel length (some very large value to prevent errors) MinGasHsmlFractional 1.0 % minimum kernel length relative to gas force softening (<= 1) %---- Gravitational softening lengths %----- Softening lengths per particle type. If ADAPTIVE_GRAVSOFT is set, these %-------- are the minimum softening allowed for each type ------- %-------- (units are co-moving for cosmological integrations) SofteningHalo 0.4 SofteningDisk 2.0 SofteningBulge 2.0 SofteningGas 0.005 SofteningStars 0.05 SofteningBndry 0.05 %---- if these are set in cosmological runs, SofteningX switches from comoving to physical %------- units when the comoving value exceeds the choice here SofteningHaloMaxPhys 0.04 SofteningDiskMaxPhys 0.2 SofteningBulgeMaxPhys 0.2 SofteningGasMaxPhys 0.0005 SofteningStarsMaxPhys 0.005 SofteningBndryMaxPhys 0.005 %----- parameters for adaptive gravitational softening AGS_DesNumNgb 32 % neighbor number for calculating adaptive gravsoft %------------------------------------------------------------ %---------- Physics Modules --------------------------------- %------------------------------------------------------------ %---- Turbulent Diffusion Master Switch (TURB_DIFFUSION on) TurbDiffusionCoefficient 1.0 % Normalizes diffusion rates, should be ~1 %---- Magneto-Hydrodynamics Parameters (MAGNETIC on) %--- Initial B-Field Strengths (if BINISET on, otherwise read from IC file) BiniX 1.0e-8 % initial B_x, in code units BiniY 1.0e-8 % initial B_y, in code units BiniZ 1.0e-8 % initial B_z, in code units %---- Star Formation parameters (GALSF on) CritPhysDensity 1000. % critical physical density for star formation (cm^(-3)) SfEffPerFreeFall 1.0 % SFR/(Mgas/tfreefall) for gas which meets SF criteria %-------------- FIRE (PFH) explicit star formation & feedback model %--- initial metallicity of gas & stars in simulation InitMetallicity 0.0001 % in solar InitStellarAge 0.001 % mean age (in Gyr) %--- local radiation-pressure driven winds (GALSF_FB_RPWIND_LOCAL) WindMomentumLoading 1.0 % boost momentum-loading (relative to ssp) %--- SneII Heating Model (GALSF_FB_SNE_HEATING) SNeIIEnergyFrac 1.0 % boost fraction of mechanical energy to couple %--- HII region photo-heating model (GALSF_FB_HII_HEATING) HIIRegion_fLum_Coupled 1.0 % boost fraction of ionizing photons %--- long-range radiation pressure acceleration (GALSF_FB_RT_PHOTONMOMENTUM) PhotonMomentum_Coupled_Fraction 1.0 % boost fraction of L to allow incident PhotonMomentum_fUV 0.0 % incident SED f(L) in UV (minimum scattering) PhotonMomentum_fOPT 0.0 % incident SED f(L) in optical/near-IR %--- gas return/recycling (GALSF_FB_GASRETURN) GasReturnFraction 1.0 % boost fraction of gas returns (relative to ssp) GasReturnEnergy 1.0 % boost temperature of gas returns (relative to ssp) %-------------- Black Hole accretion & formation (BLACK_HOLES on) %--- formation/seeding SeedBlackHoleMass 1.0e-6 % initial mass (on-the-fly or single galaxy) SeedAlphaDiskMass 0.0 % initial mass in the alpha disk (for idealized tests: if BH_ALPHADISK_ACCRETION on) %----- (specific options for on-the-fly friends-of-friends based BH seeding:%FOF on) MinFoFMassForNewSeed 10. % DAA: this is total Halo mass in code units (ignored if BH_HOST_TO_SEED_RATIO) massDMpart 0.0126849 % DAA: used by FoF (ignored if BH_HOST_TO_SEED_RATIO) TimeBetOnTheFlyFoF 1.01 % time (in sec) between FoF searches SeedBlackHoleMinRedshift 3 % this minimum redshift where new BH particles are seeded via FoF SeedBlackHoleMassSigma 0 % log normal standard deviation in the init BH seed masses from FoF %--- accretion BlackHoleAccretionFactor 0.5 % multiplier for mdot BlackHoleEddingtonFactor 10.0 % fraction of eddington to cap (can be >1) BlackHoleNgbFactor 8 % multiplier for kernel neighbors for BH BlackHoleMaxAccretionRadius 0.1 % max radius for BH neighbor search/accretion BlackHoleRadiativeEfficiency 0.1 % radiative efficiency %--- feedback BlackHoleFeedbackFactor 1.0 % generic feedback strength multiplier BH_FluxMomentumFactor 1.0 % multiply radiation pressure (BH_PHOTONMOMENTUM) BAL_f_accretion 1.0 % fraction of gas swallowed by BH (BH_BAL_WINDS) BAL_v_outflow 0.0 % velocity (km/s) of BAL outflow (BH_BAL_WINDS)