;================== run control =================================== integrator = sd tinit = 0 dt = 0.001 ; time step [ps] nsteps = 40000 ; number of steps comm_mode = Linear ; Remove center of mass translation nstcomm = 10 ; reset c.o.m. motion ;================== Polarizable model parameters ======================= Same parameter for Energy minimization - WATCH OUT emtol = 0.001 ; the convergency criterion for maximum force niter = 30 ; maximum number of iterations for the shell particle optimization ;================== Output control =================================== nstxout = 0 ; write coords nstvout = 0 ; write velocities nstfout = 0 ; do NOT write forces nstlog = 1000 ; print to logfile nstenergy = 1000 nstxtcout = 0 ; write coords to xtc-trajectory file xtc-precision = 1000 ;================== Neighborsearching and short-range nonbonded interactions nstlist = 10 ; update pairlist ns_type = grid ; pairlist method pbc = xyz ; periodic boundary conditions ;periodic_molecules = no rlist = 1.5 ; cut-off for neighborsearching - rlist >= rvdw+ (0.1 till 0.3) ;rlistlong = 1.5 ; long-range neighbor search, used with switch ;================== Electrostatics coulombtype = PME rcoulomb = 1.5 ; cut-off for coulomb - rcoulomb = rlist fourierspacing = 0.112 ; nm pme_order = 4 ewald_rtol = 1e-05 ;================== dispersion correction dispcorr = EnerPres ;================== Van der Waals vdw-type = switch rvdw_switch = 1.0 rvdw = 1.2 ; cut-off for vdw ;================== OPTIONS FOR WEAK COUPLING ALGORITHMS =============== tc-grps = System ref_t = 298.15 tau_t = 1.0 Pcoupl = no ; pressure bath (berendsen) Pcoupltype = isotropic ; pressure geometry tau_p = 1.0 ; p-coupoling time compressibility = 4.5e-5 ref_p = 1.01325 ;================== GENERATE VELOCITIES FOR STARTUP RUN ================= gen_vel = yes ; generate initial velocities gen_temp = 298.15 ; initial temperature gen_seed = -1 ; random seed continuation = no ; apply constraints and reset shells ;================== OPTIONS FOR BONDS =================================== constraints = h-bonds constraint_algorithm = lincs shake_tol = 0.00001 lincs_order = 4 lincs_warnangle = 30 morse = no lincs_iter = 2 ;================== Free energy control stuff =========================== free-energy = yes init-lambda = 0.0 delta-lambda = 0.00 foreign_lambda = 0.167 sc-alpha = 0.0 ; soft core is turned off for Coulomb decoupling sc-sigma = 0.0 sc_power = 1.0 couple-moltype = solute ; name of moleculetype to decouple couple-lambda0 = vdw-q ; all interactions are on at start couple-lambda1 = vdw ; turn off coulomb interaction couple-intramol = no nstdhdl = 100 separate_dhdl_file = yes