; ; File 'mdout.mdp' was generated ; By user: spoel (500) ; On host: h140n2fls34o1123.telia.com ; At date: Thu May 8 10:57:52 2003 ; ; ; VARIOUS PREPROCESSING OPTIONS ;title = Yo ;cpp = /lib/cpp title = YSun-md cpp = c:\Progra~1\Gromacs\bin\cpp.exe include = define = ; ; RUN CONTROL PARAMETERS integrator = md ; start time and timestep in ps tinit = 0.0 dt = 0.002 nsteps = 100 ; after checkpoint or tpbconv restart we can start on step > 0 init_step = 0 ; ???? ; mode for center of mass motion removal comm-mode = Linear ; number of steps for center of mass motion removal nstcomm = 1 ; group(s) for center of mass motion removal comm-grps = ; ; LANGEVIN DYNAMICS OPTIONS ; Temperature, friction coefficient (amu/ps) and random seed bd-temp = 300 bd-fric = 0 ld_seed = 1993 ; ; ENERGY MINIMIZATION OPTIONS ; Force tolerance and initial step-size emtol = 0.001 emstep = 0.1 ; Max number of iterations in relax_shells niter = 100 ; Step size (1/ps^2) for minimization of flexible constraints fcstep = 0 ; Frequency of steepest descents steps when doing CG nstcgsteep = 1000 ; ; OUTPUT CONTROL OPTIONS ; Output frequency for coords (x), velocities (v) and forces (f) nstxout = 0 nstvout = 0 nstfout = 0 ; Checkpointing helps you continue after crashes nstcheckpoint = 1000 ;???? ; Output frequency for energies to log file and energy file nstlog = 0 nstenergy = 1 ; Output frequency and precision for xtc file nstxtcout = 0 xtc_precision = 1000 ; This selects the subset of atoms for the xtc file. You can ; select multiple groups. By default all atoms will be written. xtc-grps = ; Selection of energy groups energygrps = Argon ; ; NEIGHBORSEARCHING PARAMETERS ; nblist update frequency nstlist = 1 ; ns algorithm (simple or grid) ns_type = simple ; Periodic boundary conditions: xyz or no pbc = xyz ; nblist cut-off rlist = 2.5 domain-decomposition = no ;??????? ; ; OPTIONS FOR ELECTROSTATICS AND VDW ; Method for doing electrostatics coulombtype = Cut-off rcoulomb_switch = 0 ;???? original - rcoulomb = 2.5 ; Dielectric constant (DC) for cut-off or DC of reaction field epsilon_r = 1 ; Method for doing Van der Waals vdw-type = Cut-off ; cut-off lengths rvdw_switch = 0 ; ????? original - rvdw = 2.5 ; Apply long range dispersion corrections for Energy and Pressure DispCorr = No ; Spacing for the PME/PPPM FFT grid fourierspacing = 0.12 ; FFT grid size, when a value is 0 fourierspacing will be used fourier_nx = 10 fourier_ny = 10 fourier_nz = 10 ; EWALD/PME/PPPM parameters pme_order = 4 ewald_rtol = 1e-05 ewald_geometry = 3d surface_epsilon = 0 ;?????? original: epsilon_surface optimize_fft = no ; ; GENERALIZED BORN ELECTROSTATICS ; Algorithm for calculating Born radii gb_algorithm = Still ;???? ; Frequency of calculating the Born radii inside rlist nstgbradii = 1 ;???? ; Cutoff for Born radii calculation; the contribution from atoms ; between rlist and rgbradii is updated every nstlist steps rgbradii = 2 ;???? ; Salt concentration in M for Generalized Born models gb_saltconc = 0 ;?????? ; ; IMPLICIT SOLVENT (for use with Generalized Born electrostatics) implicit_solvent = No ;??????? ; ; OPTIONS FOR WEAK COUPLING ALGORITHMS ; Temperature coupling tcoupl = no ; Groups to couple separately tc-grps = Argon ; Time constant (ps) and reference temperature (K) tau_t = 0.1 ref_t = 120 ; Pressure coupling Pcoupl = no Pcoupltype = Isotropic ; Time constant (ps), compressibility (1/bar) and reference P (bar) tau_p = 1.0 compressibility = ref_p = 1.0 ; Random seed for Andersen thermostat andersen_seed = 815131 ;????? ; ; SIMULATED ANNEALING ; Type of annealing for each temperature group (no/single/periodic) annealing = no ; Number of time points to use for specifying annealing in each group annealing_npoints = ; List of times at the annealing points for each group annealing_time = ; Temp. at each annealing point, for each group. annealing_temp = ; GENERATE VELOCITIES FOR STARTUP RUN gen_vel = no gen_temp = 120 gen_seed = 173529 ; OPTIONS FOR BONDS constraints = none ; Type of constraint algorithm constraint_algorithm = Lincs ; Do not constrain the start configuration unconstrained_start = no ; Use successive overrelaxation to reduce the number of shake iterations Shake-SOR = no ; Relative tolerance of shake shake_tol = 0.0001 ; Highest order in the expansion of the constraint coupling matrix lincs_order = 4 ; Number of iterations in the final step of LINCS. 1 is fine for ; normal simulations, but use 2 to conserve energy in NVE runs. ; For energy minimization with constraints it should be 4 to 8. lincs-iter = 1 ;????? ; Lincs will write a warning to the stderr if in one step a bond ; rotates over more degrees than lincs_warnangle = 30 ; Convert harmonic bonds to morse potentials morse = no ; ENERGY GROUP EXCLUSIONS ; Pairs of energy groups for which all non-bonded interactions are excluded energygrp_excl = ; NMR refinement stuff ; Distance restraints type: No, Simple or Ensemble disre = No ; Force weighting of pairs in one distance restraint: Conservative or Equal disre_weighting = Equal ; Use sqrt of the time averaged times the instantaneous violation disre_mixed = no disre_fc = 1000 disre_tau = 1.25 ; Output frequency for pair distances to energy file nstdisreout = 100 ; Orientation restraints: No or Yes orire = no ; Orientation restraints force constant and tau for time averaging orire-fc = 0 orire-tau = 0 orire-fitgrp = ; Output frequency for trace(SD) to energy file nstorireout = 100 ; Dihedral angle restraints: No, Simple or Ensemble dihre = No ;?????? dihre-fc = 1000 ;????? dihre-tau = 0 ; Output frequency for dihedral values to energy file nstdihreout = 100 ; Free energy control stuff free_energy = no init_lambda = 0 delta_lambda = 0 sc-alpha = 0 sc-sigma = 0.3 ; Non-equilibrium MD stuff acc-grps = accelerate = freezegrps = freezedim = cos-acceleration = 0 ; Electric fields ; Format is number of terms (int) and for all terms an amplitude (real) ; and a phase angle (real) E-x = E-xt = E-y = E-yt = E-z = E-zt = ; User defined thingies user1-grps = user2-grps = userint1 = 0 userint2 = 0 userint3 = 0 userint4 = 0 userreal1 = 0 userreal2 = 0 userreal3 = 0 userreal4 = 0