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41 #include <sys/types.h>
54 #include "gromacs/fileio/confio.h"
61 #include "gromacs/fileio/futil.h"
64 #include "sortwater.h"
66 #include "gmx_fatal.h"
69 #include "gromacs/fileio/gmxfio.h"
70 #include "gromacs/fileio/trnio.h"
71 #include "gromacs/fileio/tpxio.h"
72 #include "gromacs/fileio/trxio.h"
73 #include "vsite_parm.h"
77 #include "gromacs/fileio/enxio.h"
79 #include "compute_io.h"
80 #include "gpp_atomtype.h"
81 #include "mtop_util.h"
83 #include "calc_verletbuf.h"
87 static int rm_interactions(int ifunc, int nrmols, t_molinfo mols[])
92 /* For all the molecule types */
93 for (i = 0; i < nrmols; i++)
95 n += mols[i].plist[ifunc].nr;
96 mols[i].plist[ifunc].nr = 0;
101 static int check_atom_names(const char *fn1, const char *fn2,
102 gmx_mtop_t *mtop, t_atoms *at)
104 int mb, m, i, j, nmismatch;
106 #define MAXMISMATCH 20
108 if (mtop->natoms != at->nr)
110 gmx_incons("comparing atom names");
115 for (mb = 0; mb < mtop->nmolblock; mb++)
117 tat = &mtop->moltype[mtop->molblock[mb].type].atoms;
118 for (m = 0; m < mtop->molblock[mb].nmol; m++)
120 for (j = 0; j < tat->nr; j++)
122 if (strcmp( *(tat->atomname[j]), *(at->atomname[i]) ) != 0)
124 if (nmismatch < MAXMISMATCH)
127 "Warning: atom name %d in %s and %s does not match (%s - %s)\n",
128 i+1, fn1, fn2, *(tat->atomname[j]), *(at->atomname[i]));
130 else if (nmismatch == MAXMISMATCH)
132 fprintf(stderr, "(more than %d non-matching atom names)\n", MAXMISMATCH);
144 static void check_eg_vs_cg(gmx_mtop_t *mtop)
146 int astart, mb, m, cg, j, firstj;
147 unsigned char firsteg, eg;
150 /* Go through all the charge groups and make sure all their
151 * atoms are in the same energy group.
155 for (mb = 0; mb < mtop->nmolblock; mb++)
157 molt = &mtop->moltype[mtop->molblock[mb].type];
158 for (m = 0; m < mtop->molblock[mb].nmol; m++)
160 for (cg = 0; cg < molt->cgs.nr; cg++)
162 /* Get the energy group of the first atom in this charge group */
163 firstj = astart + molt->cgs.index[cg];
164 firsteg = ggrpnr(&mtop->groups, egcENER, firstj);
165 for (j = molt->cgs.index[cg]+1; j < molt->cgs.index[cg+1]; j++)
167 eg = ggrpnr(&mtop->groups, egcENER, astart+j);
170 gmx_fatal(FARGS, "atoms %d and %d in charge group %d of molecule type '%s' are in different energy groups",
171 firstj+1, astart+j+1, cg+1, *molt->name);
175 astart += molt->atoms.nr;
180 static void check_cg_sizes(const char *topfn, t_block *cgs, warninp_t wi)
183 char warn_buf[STRLEN];
186 for (cg = 0; cg < cgs->nr; cg++)
188 maxsize = max(maxsize, cgs->index[cg+1]-cgs->index[cg]);
191 if (maxsize > MAX_CHARGEGROUP_SIZE)
193 gmx_fatal(FARGS, "The largest charge group contains %d atoms. The maximum is %d.", maxsize, MAX_CHARGEGROUP_SIZE);
195 else if (maxsize > 10)
197 set_warning_line(wi, topfn, -1);
199 "The largest charge group contains %d atoms.\n"
200 "Since atoms only see each other when the centers of geometry of the charge groups they belong to are within the cut-off distance, too large charge groups can lead to serious cut-off artifacts.\n"
201 "For efficiency and accuracy, charge group should consist of a few atoms.\n"
202 "For all-atom force fields use: CH3, CH2, CH, NH2, NH, OH, CO2, CO, etc.",
204 warning_note(wi, warn_buf);
208 static void check_bonds_timestep(gmx_mtop_t *mtop, double dt, warninp_t wi)
210 /* This check is not intended to ensure accurate integration,
211 * rather it is to signal mistakes in the mdp settings.
212 * A common mistake is to forget to turn on constraints
213 * for MD after energy minimization with flexible bonds.
214 * This check can also detect too large time steps for flexible water
215 * models, but such errors will often be masked by the constraints
216 * mdp options, which turns flexible water into water with bond constraints,
217 * but without an angle constraint. Unfortunately such incorrect use
218 * of water models can not easily be detected without checking
219 * for specific model names.
221 * The stability limit of leap-frog or velocity verlet is 4.44 steps
222 * per oscillational period.
223 * But accurate bonds distributions are lost far before that limit.
224 * To allow relatively common schemes (although not common with Gromacs)
225 * of dt=1 fs without constraints and dt=2 fs with only H-bond constraints
226 * we set the note limit to 10.
228 int min_steps_warn = 5;
229 int min_steps_note = 10;
232 gmx_moltype_t *moltype, *w_moltype;
234 t_ilist *ilist, *ilb, *ilc, *ils;
236 int i, a1, a2, w_a1, w_a2, j;
237 real twopi2, limit2, fc, re, m1, m2, period2, w_period2;
238 gmx_bool bFound, bWater, bWarn;
239 char warn_buf[STRLEN];
241 ip = mtop->ffparams.iparams;
243 twopi2 = sqr(2*M_PI);
245 limit2 = sqr(min_steps_note*dt);
251 for (molt = 0; molt < mtop->nmoltype; molt++)
253 moltype = &mtop->moltype[molt];
254 atom = moltype->atoms.atom;
255 ilist = moltype->ilist;
256 ilc = &ilist[F_CONSTR];
257 ils = &ilist[F_SETTLE];
258 for (ftype = 0; ftype < F_NRE; ftype++)
260 if (!(ftype == F_BONDS || ftype == F_G96BONDS || ftype == F_HARMONIC))
266 for (i = 0; i < ilb->nr; i += 3)
268 fc = ip[ilb->iatoms[i]].harmonic.krA;
269 re = ip[ilb->iatoms[i]].harmonic.rA;
270 if (ftype == F_G96BONDS)
272 /* Convert squared sqaure fc to harmonic fc */
275 a1 = ilb->iatoms[i+1];
276 a2 = ilb->iatoms[i+2];
279 if (fc > 0 && m1 > 0 && m2 > 0)
281 period2 = twopi2*m1*m2/((m1 + m2)*fc);
285 period2 = GMX_FLOAT_MAX;
289 fprintf(debug, "fc %g m1 %g m2 %g period %g\n",
290 fc, m1, m2, sqrt(period2));
292 if (period2 < limit2)
295 for (j = 0; j < ilc->nr; j += 3)
297 if ((ilc->iatoms[j+1] == a1 && ilc->iatoms[j+2] == a2) ||
298 (ilc->iatoms[j+1] == a2 && ilc->iatoms[j+2] == a1))
303 for (j = 0; j < ils->nr; j += 4)
305 if ((a1 == ils->iatoms[j+1] || a1 == ils->iatoms[j+2] || a1 == ils->iatoms[j+3]) &&
306 (a2 == ils->iatoms[j+1] || a2 == ils->iatoms[j+2] || a2 == ils->iatoms[j+3]))
312 (w_moltype == NULL || period2 < w_period2))
324 if (w_moltype != NULL)
326 bWarn = (w_period2 < sqr(min_steps_warn*dt));
327 /* A check that would recognize most water models */
328 bWater = ((*w_moltype->atoms.atomname[0])[0] == 'O' &&
329 w_moltype->atoms.nr <= 5);
330 sprintf(warn_buf, "The bond in molecule-type %s between atoms %d %s and %d %s has an estimated oscillational period of %.1e ps, which is less than %d times the time step of %.1e ps.\n"
333 w_a1+1, *w_moltype->atoms.atomname[w_a1],
334 w_a2+1, *w_moltype->atoms.atomname[w_a2],
335 sqrt(w_period2), bWarn ? min_steps_warn : min_steps_note, dt,
337 "Maybe you asked for fexible water." :
338 "Maybe you forgot to change the constraints mdp option.");
341 warning(wi, warn_buf);
345 warning_note(wi, warn_buf);
350 static void check_vel(gmx_mtop_t *mtop, rvec v[])
352 gmx_mtop_atomloop_all_t aloop;
356 aloop = gmx_mtop_atomloop_all_init(mtop);
357 while (gmx_mtop_atomloop_all_next(aloop, &a, &atom))
359 if (atom->ptype == eptShell ||
360 atom->ptype == eptBond ||
361 atom->ptype == eptVSite)
368 static gmx_bool nint_ftype(gmx_mtop_t *mtop, t_molinfo *mi, int ftype)
373 for (mb = 0; mb < mtop->nmolblock; mb++)
375 nint += mtop->molblock[mb].nmol*mi[mtop->molblock[mb].type].plist[ftype].nr;
381 /* This routine reorders the molecule type array
382 * in the order of use in the molblocks,
383 * unused molecule types are deleted.
385 static void renumber_moltypes(gmx_mtop_t *sys,
386 int *nmolinfo, t_molinfo **molinfo)
388 int *order, norder, i;
392 snew(order, *nmolinfo);
394 for (mb = 0; mb < sys->nmolblock; mb++)
396 for (i = 0; i < norder; i++)
398 if (order[i] == sys->molblock[mb].type)
405 /* This type did not occur yet, add it */
406 order[norder] = sys->molblock[mb].type;
407 /* Renumber the moltype in the topology */
410 sys->molblock[mb].type = i;
413 /* We still need to reorder the molinfo structs */
415 for (mi = 0; mi < *nmolinfo; mi++)
417 for (i = 0; i < norder; i++)
426 done_mi(&(*molinfo)[mi]);
430 minew[i] = (*molinfo)[mi];
439 static void molinfo2mtop(int nmi, t_molinfo *mi, gmx_mtop_t *mtop)
444 mtop->nmoltype = nmi;
445 snew(mtop->moltype, nmi);
446 for (m = 0; m < nmi; m++)
448 molt = &mtop->moltype[m];
449 molt->name = mi[m].name;
450 molt->atoms = mi[m].atoms;
451 /* ilists are copied later */
452 molt->cgs = mi[m].cgs;
453 molt->excls = mi[m].excls;
458 new_status(const char *topfile, const char *topppfile, const char *confin,
459 t_gromppopts *opts, t_inputrec *ir, gmx_bool bZero,
460 gmx_bool bGenVel, gmx_bool bVerbose, t_state *state,
461 gpp_atomtype_t atype, gmx_mtop_t *sys,
462 int *nmi, t_molinfo **mi, t_params plist[],
463 int *comb, double *reppow, real *fudgeQQ,
467 t_molinfo *molinfo = NULL;
469 gmx_molblock_t *molblock, *molbs;
471 int mb, i, nrmols, nmismatch;
473 gmx_bool bGB = FALSE;
474 char warn_buf[STRLEN];
478 /* Set gmx_boolean for GB */
479 if (ir->implicit_solvent)
484 /* TOPOLOGY processing */
485 sys->name = do_top(bVerbose, topfile, topppfile, opts, bZero, &(sys->symtab),
486 plist, comb, reppow, fudgeQQ,
487 atype, &nrmols, &molinfo, ir,
488 &nmolblock, &molblock, bGB,
492 snew(sys->molblock, nmolblock);
495 for (mb = 0; mb < nmolblock; mb++)
497 if (sys->nmolblock > 0 &&
498 molblock[mb].type == sys->molblock[sys->nmolblock-1].type)
500 /* Merge consecutive blocks with the same molecule type */
501 sys->molblock[sys->nmolblock-1].nmol += molblock[mb].nmol;
502 sys->natoms += molblock[mb].nmol*sys->molblock[sys->nmolblock-1].natoms_mol;
504 else if (molblock[mb].nmol > 0)
506 /* Add a new molblock to the topology */
507 molbs = &sys->molblock[sys->nmolblock];
508 *molbs = molblock[mb];
509 molbs->natoms_mol = molinfo[molbs->type].atoms.nr;
510 molbs->nposres_xA = 0;
511 molbs->nposres_xB = 0;
512 sys->natoms += molbs->nmol*molbs->natoms_mol;
516 if (sys->nmolblock == 0)
518 gmx_fatal(FARGS, "No molecules were defined in the system");
521 renumber_moltypes(sys, &nrmols, &molinfo);
525 convert_harmonics(nrmols, molinfo, atype);
528 if (ir->eDisre == edrNone)
530 i = rm_interactions(F_DISRES, nrmols, molinfo);
533 set_warning_line(wi, "unknown", -1);
534 sprintf(warn_buf, "disre = no, removed %d distance restraints", i);
535 warning_note(wi, warn_buf);
538 if (opts->bOrire == FALSE)
540 i = rm_interactions(F_ORIRES, nrmols, molinfo);
543 set_warning_line(wi, "unknown", -1);
544 sprintf(warn_buf, "orire = no, removed %d orientation restraints", i);
545 warning_note(wi, warn_buf);
549 /* Copy structures from msys to sys */
550 molinfo2mtop(nrmols, molinfo, sys);
552 gmx_mtop_finalize(sys);
554 /* COORDINATE file processing */
557 fprintf(stderr, "processing coordinates...\n");
560 get_stx_coordnum(confin, &state->natoms);
561 if (state->natoms != sys->natoms)
563 gmx_fatal(FARGS, "number of coordinates in coordinate file (%s, %d)\n"
564 " does not match topology (%s, %d)",
565 confin, state->natoms, topfile, sys->natoms);
569 /* make space for coordinates and velocities */
572 init_t_atoms(confat, state->natoms, FALSE);
573 init_state(state, state->natoms, 0, 0, 0, 0);
574 read_stx_conf(confin, title, confat, state->x, state->v, NULL, state->box);
575 /* This call fixes the box shape for runs with pressure scaling */
576 set_box_rel(ir, state);
578 nmismatch = check_atom_names(topfile, confin, sys, confat);
579 free_t_atoms(confat, TRUE);
584 sprintf(buf, "%d non-matching atom name%s\n"
585 "atom names from %s will be used\n"
586 "atom names from %s will be ignored\n",
587 nmismatch, (nmismatch == 1) ? "" : "s", topfile, confin);
592 fprintf(stderr, "double-checking input for internal consistency...\n");
594 double_check(ir, state->box, nint_ftype(sys, molinfo, F_CONSTR), wi);
600 gmx_mtop_atomloop_all_t aloop;
603 snew(mass, state->natoms);
604 aloop = gmx_mtop_atomloop_all_init(sys);
605 while (gmx_mtop_atomloop_all_next(aloop, &i, &atom))
610 if (opts->seed == -1)
612 opts->seed = make_seed();
613 fprintf(stderr, "Setting gen_seed to %d\n", opts->seed);
615 maxwell_speed(opts->tempi, opts->seed, sys, state->v);
617 stop_cm(stdout, state->natoms, mass, state->x, state->v);
625 static void copy_state(const char *slog, t_trxframe *fr,
626 gmx_bool bReadVel, t_state *state,
631 if (fr->not_ok & FRAME_NOT_OK)
633 gmx_fatal(FARGS, "Can not start from an incomplete frame");
637 gmx_fatal(FARGS, "Did not find a frame with coordinates in file %s",
641 for (i = 0; i < state->natoms; i++)
643 copy_rvec(fr->x[i], state->x[i]);
649 gmx_incons("Trajecory frame unexpectedly does not contain velocities");
651 for (i = 0; i < state->natoms; i++)
653 copy_rvec(fr->v[i], state->v[i]);
658 copy_mat(fr->box, state->box);
661 *use_time = fr->time;
664 static void cont_status(const char *slog, const char *ener,
665 gmx_bool bNeedVel, gmx_bool bGenVel, real fr_time,
666 t_inputrec *ir, t_state *state,
668 const output_env_t oenv)
669 /* If fr_time == -1 read the last frame available which is complete */
677 bReadVel = (bNeedVel && !bGenVel);
680 "Reading Coordinates%s and Box size from old trajectory\n",
681 bReadVel ? ", Velocities" : "");
684 fprintf(stderr, "Will read whole trajectory\n");
688 fprintf(stderr, "Will read till time %g\n", fr_time);
694 fprintf(stderr, "Velocities generated: "
695 "ignoring velocities in input trajectory\n");
697 read_first_frame(oenv, &fp, slog, &fr, TRX_NEED_X);
701 read_first_frame(oenv, &fp, slog, &fr, TRX_NEED_X | TRX_NEED_V);
707 "WARNING: Did not find a frame with velocities in file %s,\n"
708 " all velocities will be set to zero!\n\n", slog);
709 for (i = 0; i < sys->natoms; i++)
711 clear_rvec(state->v[i]);
714 /* Search for a frame without velocities */
716 read_first_frame(oenv, &fp, slog, &fr, TRX_NEED_X);
720 state->natoms = fr.natoms;
722 if (sys->natoms != state->natoms)
724 gmx_fatal(FARGS, "Number of atoms in Topology "
725 "is not the same as in Trajectory");
727 copy_state(slog, &fr, bReadVel, state, &use_time);
729 /* Find the appropriate frame */
730 while ((fr_time == -1 || fr.time < fr_time) &&
731 read_next_frame(oenv, fp, &fr))
733 copy_state(slog, &fr, bReadVel, state, &use_time);
738 /* Set the relative box lengths for preserving the box shape.
739 * Note that this call can lead to differences in the last bit
740 * with respect to using tpbconv to create a [TT].tpx[tt] file.
742 set_box_rel(ir, state);
744 fprintf(stderr, "Using frame at t = %g ps\n", use_time);
745 fprintf(stderr, "Starting time for run is %g ps\n", ir->init_t);
747 if ((ir->epc != epcNO || ir->etc == etcNOSEHOOVER) && ener)
749 get_enx_state(ener, use_time, &sys->groups, ir, state);
750 preserve_box_shape(ir, state->box_rel, state->boxv);
754 static void read_posres(gmx_mtop_t *mtop, t_molinfo *molinfo, gmx_bool bTopB,
756 int rc_scaling, int ePBC,
760 gmx_bool bFirst = TRUE, *hadAtom;
766 int natoms, npbcdim = 0;
767 char warn_buf[STRLEN], title[STRLEN];
768 int a, i, ai, j, k, mb, nat_molb;
769 gmx_molblock_t *molb;
773 get_stx_coordnum(fn, &natoms);
774 if (natoms != mtop->natoms)
776 sprintf(warn_buf, "The number of atoms in %s (%d) does not match the number of atoms in the topology (%d). Will assume that the first %d atoms in the topology and %s match.", fn, natoms, mtop->natoms, min(mtop->natoms, natoms), fn);
777 warning(wi, warn_buf);
781 init_t_atoms(&dumat, natoms, FALSE);
782 read_stx_conf(fn, title, &dumat, x, v, NULL, box);
784 npbcdim = ePBC2npbcdim(ePBC);
786 if (rc_scaling != erscNO)
788 copy_mat(box, invbox);
789 for (j = npbcdim; j < DIM; j++)
791 clear_rvec(invbox[j]);
794 m_inv_ur0(invbox, invbox);
797 /* Copy the reference coordinates to mtop */
801 snew(hadAtom, natoms);
802 for (mb = 0; mb < mtop->nmolblock; mb++)
804 molb = &mtop->molblock[mb];
805 nat_molb = molb->nmol*mtop->moltype[molb->type].atoms.nr;
806 pr = &(molinfo[molb->type].plist[F_POSRES]);
807 prfb = &(molinfo[molb->type].plist[F_FBPOSRES]);
808 if (pr->nr > 0 || prfb->nr > 0)
810 atom = mtop->moltype[molb->type].atoms.atom;
811 for (i = 0; (i < pr->nr); i++)
813 ai = pr->param[i].AI;
816 gmx_fatal(FARGS, "Position restraint atom index (%d) in moltype '%s' is larger than number of atoms in %s (%d).\n",
817 ai+1, *molinfo[molb->type].name, fn, natoms);
820 if (rc_scaling == erscCOM)
822 /* Determine the center of mass of the posres reference coordinates */
823 for (j = 0; j < npbcdim; j++)
825 sum[j] += atom[ai].m*x[a+ai][j];
827 totmass += atom[ai].m;
830 /* Same for flat-bottomed posres, but do not count an atom twice for COM */
831 for (i = 0; (i < prfb->nr); i++)
833 ai = prfb->param[i].AI;
836 gmx_fatal(FARGS, "Position restraint atom index (%d) in moltype '%s' is larger than number of atoms in %s (%d).\n",
837 ai+1, *molinfo[molb->type].name, fn, natoms);
839 if (rc_scaling == erscCOM && hadAtom[ai] == FALSE)
841 /* Determine the center of mass of the posres reference coordinates */
842 for (j = 0; j < npbcdim; j++)
844 sum[j] += atom[ai].m*x[a+ai][j];
846 totmass += atom[ai].m;
851 molb->nposres_xA = nat_molb;
852 snew(molb->posres_xA, molb->nposres_xA);
853 for (i = 0; i < nat_molb; i++)
855 copy_rvec(x[a+i], molb->posres_xA[i]);
860 molb->nposres_xB = nat_molb;
861 snew(molb->posres_xB, molb->nposres_xB);
862 for (i = 0; i < nat_molb; i++)
864 copy_rvec(x[a+i], molb->posres_xB[i]);
870 if (rc_scaling == erscCOM)
874 gmx_fatal(FARGS, "The total mass of the position restraint atoms is 0");
876 for (j = 0; j < npbcdim; j++)
878 com[j] = sum[j]/totmass;
880 fprintf(stderr, "The center of mass of the position restraint coord's is %6.3f %6.3f %6.3f\n", com[XX], com[YY], com[ZZ]);
883 if (rc_scaling != erscNO)
885 for (mb = 0; mb < mtop->nmolblock; mb++)
887 molb = &mtop->molblock[mb];
888 nat_molb = molb->nmol*mtop->moltype[molb->type].atoms.nr;
889 if (molb->nposres_xA > 0 || molb->nposres_xB > 0)
891 xp = (!bTopB ? molb->posres_xA : molb->posres_xB);
892 for (i = 0; i < nat_molb; i++)
894 for (j = 0; j < npbcdim; j++)
896 if (rc_scaling == erscALL)
898 /* Convert from Cartesian to crystal coordinates */
899 xp[i][j] *= invbox[j][j];
900 for (k = j+1; k < npbcdim; k++)
902 xp[i][j] += invbox[k][j]*xp[i][k];
905 else if (rc_scaling == erscCOM)
907 /* Subtract the center of mass */
915 if (rc_scaling == erscCOM)
917 /* Convert the COM from Cartesian to crystal coordinates */
918 for (j = 0; j < npbcdim; j++)
920 com[j] *= invbox[j][j];
921 for (k = j+1; k < npbcdim; k++)
923 com[j] += invbox[k][j]*com[k];
929 free_t_atoms(&dumat, TRUE);
935 static void gen_posres(gmx_mtop_t *mtop, t_molinfo *mi,
936 char *fnA, char *fnB,
937 int rc_scaling, int ePBC,
943 read_posres (mtop, mi, FALSE, fnA, rc_scaling, ePBC, com, wi);
944 if (strcmp(fnA, fnB) != 0)
946 read_posres(mtop, mi, TRUE, fnB, rc_scaling, ePBC, comB, wi);
950 static void set_wall_atomtype(gpp_atomtype_t at, t_gromppopts *opts,
951 t_inputrec *ir, warninp_t wi)
954 char warn_buf[STRLEN];
958 fprintf(stderr, "Searching the wall atom type(s)\n");
960 for (i = 0; i < ir->nwall; i++)
962 ir->wall_atomtype[i] = get_atomtype_type(opts->wall_atomtype[i], at);
963 if (ir->wall_atomtype[i] == NOTSET)
965 sprintf(warn_buf, "Specified wall atom type %s is not defined", opts->wall_atomtype[i]);
966 warning_error(wi, warn_buf);
971 static int nrdf_internal(t_atoms *atoms)
976 for (i = 0; i < atoms->nr; i++)
978 /* Vsite ptype might not be set here yet, so also check the mass */
979 if ((atoms->atom[i].ptype == eptAtom ||
980 atoms->atom[i].ptype == eptNucleus)
981 && atoms->atom[i].m > 0)
988 case 0: nrdf = 0; break;
989 case 1: nrdf = 0; break;
990 case 2: nrdf = 1; break;
991 default: nrdf = nmass*3 - 6; break;
1010 for (i = 1; i < n-1; i++)
1012 p = 0.5*y2[i-1]+2.0;
1014 q = (y[i+1]-2.0*y[i]+y[i-1])/dx;
1015 u[i] = (3.0*q/dx-0.5*u[i-1])/p;
1020 for (i = n-2; i >= 0; i--)
1022 y2[i] = y2[i]*y2[i+1]+u[i];
1028 interpolate1d( double xmin,
1041 a = (xmin+(ix+1)*dx-x)/dx;
1042 b = (x-xmin-ix*dx)/dx;
1044 *y = a*ya[ix]+b*ya[ix+1]+((a*a*a-a)*y2a[ix]+(b*b*b-b)*y2a[ix+1])*(dx*dx)/6.0;
1045 *y1 = (ya[ix+1]-ya[ix])/dx-(3.0*a*a-1.0)/6.0*dx*y2a[ix]+(3.0*b*b-1.0)/6.0*dx*y2a[ix+1];
1050 setup_cmap (int grid_spacing,
1053 gmx_cmap_t * cmap_grid)
1055 double *tmp_u, *tmp_u2, *tmp_yy, *tmp_y1, *tmp_t2, *tmp_grid;
1057 int i, j, k, ii, jj, kk, idx;
1059 double dx, xmin, v, v1, v2, v12;
1062 snew(tmp_u, 2*grid_spacing);
1063 snew(tmp_u2, 2*grid_spacing);
1064 snew(tmp_yy, 2*grid_spacing);
1065 snew(tmp_y1, 2*grid_spacing);
1066 snew(tmp_t2, 2*grid_spacing*2*grid_spacing);
1067 snew(tmp_grid, 2*grid_spacing*2*grid_spacing);
1069 dx = 360.0/grid_spacing;
1070 xmin = -180.0-dx*grid_spacing/2;
1072 for (kk = 0; kk < nc; kk++)
1074 /* Compute an offset depending on which cmap we are using
1075 * Offset will be the map number multiplied with the
1076 * grid_spacing * grid_spacing * 2
1078 offset = kk * grid_spacing * grid_spacing * 2;
1080 for (i = 0; i < 2*grid_spacing; i++)
1082 ii = (i+grid_spacing-grid_spacing/2)%grid_spacing;
1084 for (j = 0; j < 2*grid_spacing; j++)
1086 jj = (j+grid_spacing-grid_spacing/2)%grid_spacing;
1087 tmp_grid[i*grid_spacing*2+j] = grid[offset+ii*grid_spacing+jj];
1091 for (i = 0; i < 2*grid_spacing; i++)
1093 spline1d(dx, &(tmp_grid[2*grid_spacing*i]), 2*grid_spacing, tmp_u, &(tmp_t2[2*grid_spacing*i]));
1096 for (i = grid_spacing/2; i < grid_spacing+grid_spacing/2; i++)
1098 ii = i-grid_spacing/2;
1101 for (j = grid_spacing/2; j < grid_spacing+grid_spacing/2; j++)
1103 jj = j-grid_spacing/2;
1106 for (k = 0; k < 2*grid_spacing; k++)
1108 interpolate1d(xmin, dx, &(tmp_grid[2*grid_spacing*k]),
1109 &(tmp_t2[2*grid_spacing*k]), psi, &tmp_yy[k], &tmp_y1[k]);
1112 spline1d(dx, tmp_yy, 2*grid_spacing, tmp_u, tmp_u2);
1113 interpolate1d(xmin, dx, tmp_yy, tmp_u2, phi, &v, &v1);
1114 spline1d(dx, tmp_y1, 2*grid_spacing, tmp_u, tmp_u2);
1115 interpolate1d(xmin, dx, tmp_y1, tmp_u2, phi, &v2, &v12);
1117 idx = ii*grid_spacing+jj;
1118 cmap_grid->cmapdata[kk].cmap[idx*4] = grid[offset+ii*grid_spacing+jj];
1119 cmap_grid->cmapdata[kk].cmap[idx*4+1] = v1;
1120 cmap_grid->cmapdata[kk].cmap[idx*4+2] = v2;
1121 cmap_grid->cmapdata[kk].cmap[idx*4+3] = v12;
1127 void init_cmap_grid(gmx_cmap_t *cmap_grid, int ngrid, int grid_spacing)
1131 cmap_grid->ngrid = ngrid;
1132 cmap_grid->grid_spacing = grid_spacing;
1133 nelem = cmap_grid->grid_spacing*cmap_grid->grid_spacing;
1135 snew(cmap_grid->cmapdata, ngrid);
1137 for (i = 0; i < cmap_grid->ngrid; i++)
1139 snew(cmap_grid->cmapdata[i].cmap, 4*nelem);
1144 static int count_constraints(gmx_mtop_t *mtop, t_molinfo *mi, warninp_t wi)
1146 int count, count_mol, i, mb;
1147 gmx_molblock_t *molb;
1152 for (mb = 0; mb < mtop->nmolblock; mb++)
1155 molb = &mtop->molblock[mb];
1156 plist = mi[molb->type].plist;
1158 for (i = 0; i < F_NRE; i++)
1162 count_mol += 3*plist[i].nr;
1164 else if (interaction_function[i].flags & IF_CONSTRAINT)
1166 count_mol += plist[i].nr;
1170 if (count_mol > nrdf_internal(&mi[molb->type].atoms))
1173 "Molecule type '%s' has %d constraints.\n"
1174 "For stability and efficiency there should not be more constraints than internal number of degrees of freedom: %d.\n",
1175 *mi[molb->type].name, count_mol,
1176 nrdf_internal(&mi[molb->type].atoms));
1179 count += molb->nmol*count_mol;
1185 static void check_gbsa_params_charged(gmx_mtop_t *sys, gpp_atomtype_t atype)
1187 int i, nmiss, natoms, mt;
1189 const t_atoms *atoms;
1192 for (mt = 0; mt < sys->nmoltype; mt++)
1194 atoms = &sys->moltype[mt].atoms;
1197 for (i = 0; i < natoms; i++)
1199 q = atoms->atom[i].q;
1200 if ((get_atomtype_radius(atoms->atom[i].type, atype) == 0 ||
1201 get_atomtype_vol(atoms->atom[i].type, atype) == 0 ||
1202 get_atomtype_surftens(atoms->atom[i].type, atype) == 0 ||
1203 get_atomtype_gb_radius(atoms->atom[i].type, atype) == 0 ||
1204 get_atomtype_S_hct(atoms->atom[i].type, atype) == 0) &&
1207 fprintf(stderr, "\nGB parameter(s) zero for atom type '%s' while charge is %g\n",
1208 get_atomtype_name(atoms->atom[i].type, atype), q);
1216 gmx_fatal(FARGS, "Can't do GB electrostatics; the implicit_genborn_params section of the forcefield has parameters with value zero for %d atomtypes that occur as charged atoms.", nmiss);
1221 static void check_gbsa_params(gpp_atomtype_t atype)
1225 /* If we are doing GBSA, check that we got the parameters we need
1226 * This checking is to see if there are GBSA paratmeters for all
1227 * atoms in the force field. To go around this for testing purposes
1228 * comment out the nerror++ counter temporarily
1231 for (i = 0; i < get_atomtype_ntypes(atype); i++)
1233 if (get_atomtype_radius(i, atype) < 0 ||
1234 get_atomtype_vol(i, atype) < 0 ||
1235 get_atomtype_surftens(i, atype) < 0 ||
1236 get_atomtype_gb_radius(i, atype) < 0 ||
1237 get_atomtype_S_hct(i, atype) < 0)
1239 fprintf(stderr, "\nGB parameter(s) missing or negative for atom type '%s'\n",
1240 get_atomtype_name(i, atype));
1247 gmx_fatal(FARGS, "Can't do GB electrostatics; the implicit_genborn_params section of the forcefield is missing parameters for %d atomtypes or they might be negative.", nmiss);
1252 static void set_verlet_buffer(const gmx_mtop_t *mtop,
1259 verletbuf_list_setup_t ls;
1262 char warn_buf[STRLEN];
1265 for (i = 0; i < ir->opts.ngtc; i++)
1267 if (ir->opts.ref_t[i] < 0)
1269 warning(wi, "Some atom groups do not use temperature coupling. This cannot be accounted for in the energy error estimation for the Verlet buffer size. The energy error and the Verlet buffer might be underestimated.");
1273 ref_T = max(ref_T, ir->opts.ref_t[i]);
1277 printf("Determining Verlet buffer for a tolerance of %g kJ/mol/ps at %g K\n", ir->verletbuf_tol, ref_T);
1279 for (i = 0; i < ir->opts.ngtc; i++)
1281 if (ir->opts.ref_t[i] >= 0 && ir->opts.ref_t[i] != ref_T)
1283 sprintf(warn_buf, "ref_T for group of %.1f DOFs is %g K, which is smaller than the maximum of %g K used for the buffer size calculation. The buffer size might be on the conservative (large) side.",
1284 ir->opts.nrdf[i], ir->opts.ref_t[i], ref_T);
1285 warning_note(wi, warn_buf);
1289 /* Calculate the buffer size for simple atom vs atoms list */
1290 ls.cluster_size_i = 1;
1291 ls.cluster_size_j = 1;
1292 calc_verlet_buffer_size(mtop, det(box), ir,
1293 &ls, &n_nonlin_vsite, &rlist_1x1);
1295 /* Set the pair-list buffer size in ir */
1296 verletbuf_get_list_setup(FALSE, &ls);
1297 calc_verlet_buffer_size(mtop, det(box), ir,
1298 &ls, &n_nonlin_vsite, &ir->rlist);
1300 if (n_nonlin_vsite > 0)
1302 sprintf(warn_buf, "There are %d non-linear virtual site constructions. Their contribution to the energy error is approximated. In most cases this does not affect the error significantly.", n_nonlin_vsite);
1303 warning_note(wi, warn_buf);
1306 printf("Calculated rlist for %dx%d atom pair-list as %.3f nm, buffer size %.3f nm\n",
1307 1, 1, rlist_1x1, rlist_1x1-max(ir->rvdw, ir->rcoulomb));
1309 ir->rlistlong = ir->rlist;
1310 printf("Set rlist, assuming %dx%d atom pair-list, to %.3f nm, buffer size %.3f nm\n",
1311 ls.cluster_size_i, ls.cluster_size_j,
1312 ir->rlist, ir->rlist-max(ir->rvdw, ir->rcoulomb));
1314 if (sqr(ir->rlistlong) >= max_cutoff2(ir->ePBC, box))
1316 gmx_fatal(FARGS, "The pair-list cut-off (%g nm) is longer than half the shortest box vector or longer than the smallest box diagonal element (%g nm). Increase the box size or decrease nstlist or increase verlet-buffer-tolerance.", ir->rlistlong, sqrt(max_cutoff2(ir->ePBC, box)));
1320 int gmx_grompp(int argc, char *argv[])
1322 static const char *desc[] = {
1323 "[THISMODULE] (the gromacs preprocessor)",
1324 "reads a molecular topology file, checks the validity of the",
1325 "file, expands the topology from a molecular description to an atomic",
1326 "description. The topology file contains information about",
1327 "molecule types and the number of molecules, the preprocessor",
1328 "copies each molecule as needed. ",
1329 "There is no limitation on the number of molecule types. ",
1330 "Bonds and bond-angles can be converted into constraints, separately",
1331 "for hydrogens and heavy atoms.",
1332 "Then a coordinate file is read and velocities can be generated",
1333 "from a Maxwellian distribution if requested.",
1334 "[THISMODULE] also reads parameters for [gmx-mdrun] ",
1335 "(eg. number of MD steps, time step, cut-off), and others such as",
1336 "NEMD parameters, which are corrected so that the net acceleration",
1338 "Eventually a binary file is produced that can serve as the sole input",
1339 "file for the MD program.[PAR]",
1341 "[THISMODULE] uses the atom names from the topology file. The atom names",
1342 "in the coordinate file (option [TT]-c[tt]) are only read to generate",
1343 "warnings when they do not match the atom names in the topology.",
1344 "Note that the atom names are irrelevant for the simulation as",
1345 "only the atom types are used for generating interaction parameters.[PAR]",
1347 "[THISMODULE] uses a built-in preprocessor to resolve includes, macros, ",
1348 "etc. The preprocessor supports the following keywords:[PAR]",
1349 "#ifdef VARIABLE[BR]",
1350 "#ifndef VARIABLE[BR]",
1353 "#define VARIABLE[BR]",
1354 "#undef VARIABLE[BR]"
1355 "#include \"filename\"[BR]",
1356 "#include <filename>[PAR]",
1357 "The functioning of these statements in your topology may be modulated by",
1358 "using the following two flags in your [TT].mdp[tt] file:[PAR]",
1359 "[TT]define = -DVARIABLE1 -DVARIABLE2[BR]",
1360 "include = -I/home/john/doe[tt][BR]",
1361 "For further information a C-programming textbook may help you out.",
1362 "Specifying the [TT]-pp[tt] flag will get the pre-processed",
1363 "topology file written out so that you can verify its contents.[PAR]",
1365 /* cpp has been unnecessary for some time, hasn't it?
1366 "If your system does not have a C-preprocessor, you can still",
1367 "use [TT]grompp[tt], but you do not have access to the features ",
1368 "from the cpp. Command line options to the C-preprocessor can be given",
1369 "in the [TT].mdp[tt] file. See your local manual (man cpp).[PAR]",
1372 "When using position restraints a file with restraint coordinates",
1373 "can be supplied with [TT]-r[tt], otherwise restraining will be done",
1374 "with respect to the conformation from the [TT]-c[tt] option.",
1375 "For free energy calculation the the coordinates for the B topology",
1376 "can be supplied with [TT]-rb[tt], otherwise they will be equal to",
1377 "those of the A topology.[PAR]",
1379 "Starting coordinates can be read from trajectory with [TT]-t[tt].",
1380 "The last frame with coordinates and velocities will be read,",
1381 "unless the [TT]-time[tt] option is used. Only if this information",
1382 "is absent will the coordinates in the [TT]-c[tt] file be used.",
1383 "Note that these velocities will not be used when [TT]gen_vel = yes[tt]",
1384 "in your [TT].mdp[tt] file. An energy file can be supplied with",
1385 "[TT]-e[tt] to read Nose-Hoover and/or Parrinello-Rahman coupling",
1388 "[THISMODULE] can be used to restart simulations (preserving",
1389 "continuity) by supplying just a checkpoint file with [TT]-t[tt].",
1390 "However, for simply changing the number of run steps to extend",
1391 "a run, using [gmx-tpbconv] is more convenient than [THISMODULE].",
1392 "You then supply the old checkpoint file directly to [gmx-mdrun]",
1393 "with [TT]-cpi[tt]. If you wish to change the ensemble or things",
1394 "like output frequency, then supplying the checkpoint file to",
1395 "[THISMODULE] with [TT]-t[tt] along with a new [TT].mdp[tt] file",
1396 "with [TT]-f[tt] is the recommended procedure.[PAR]",
1398 "By default, all bonded interactions which have constant energy due to",
1399 "virtual site constructions will be removed. If this constant energy is",
1400 "not zero, this will result in a shift in the total energy. All bonded",
1401 "interactions can be kept by turning off [TT]-rmvsbds[tt]. Additionally,",
1402 "all constraints for distances which will be constant anyway because",
1403 "of virtual site constructions will be removed. If any constraints remain",
1404 "which involve virtual sites, a fatal error will result.[PAR]"
1406 "To verify your run input file, please take note of all warnings",
1407 "on the screen, and correct where necessary. Do also look at the contents",
1408 "of the [TT]mdout.mdp[tt] file; this contains comment lines, as well as",
1409 "the input that [THISMODULE] has read. If in doubt, you can start [THISMODULE]",
1410 "with the [TT]-debug[tt] option which will give you more information",
1411 "in a file called [TT]grompp.log[tt] (along with real debug info). You",
1412 "can see the contents of the run input file with the [gmx-dump]",
1413 "program. [gmx-check] can be used to compare the contents of two",
1414 "run input files.[PAR]"
1416 "The [TT]-maxwarn[tt] option can be used to override warnings printed",
1417 "by [THISMODULE] that otherwise halt output. In some cases, warnings are",
1418 "harmless, but usually they are not. The user is advised to carefully",
1419 "interpret the output messages before attempting to bypass them with",
1426 gpp_atomtype_t atype;
1428 int natoms, nvsite, comb, mt;
1432 real max_spacing, fudgeQQ;
1434 char fn[STRLEN], fnB[STRLEN];
1435 const char *mdparin;
1437 gmx_bool bNeedVel, bGenVel;
1438 gmx_bool have_atomnumber;
1440 t_params *gb_plist = NULL;
1441 gmx_genborn_t *born = NULL;
1443 gmx_bool bVerbose = FALSE;
1445 char warn_buf[STRLEN];
1448 { efMDP, NULL, NULL, ffREAD },
1449 { efMDP, "-po", "mdout", ffWRITE },
1450 { efSTX, "-c", NULL, ffREAD },
1451 { efSTX, "-r", NULL, ffOPTRD },
1452 { efSTX, "-rb", NULL, ffOPTRD },
1453 { efNDX, NULL, NULL, ffOPTRD },
1454 { efTOP, NULL, NULL, ffREAD },
1455 { efTOP, "-pp", "processed", ffOPTWR },
1456 { efTPX, "-o", NULL, ffWRITE },
1457 { efTRN, "-t", NULL, ffOPTRD },
1458 { efEDR, "-e", NULL, ffOPTRD },
1459 { efTRN, "-ref", "rotref", ffOPTRW }
1461 #define NFILE asize(fnm)
1463 /* Command line options */
1464 static gmx_bool bRenum = TRUE;
1465 static gmx_bool bRmVSBds = TRUE, bZero = FALSE;
1466 static int i, maxwarn = 0;
1467 static real fr_time = -1;
1469 { "-v", FALSE, etBOOL, {&bVerbose},
1470 "Be loud and noisy" },
1471 { "-time", FALSE, etREAL, {&fr_time},
1472 "Take frame at or first after this time." },
1473 { "-rmvsbds", FALSE, etBOOL, {&bRmVSBds},
1474 "Remove constant bonded interactions with virtual sites" },
1475 { "-maxwarn", FALSE, etINT, {&maxwarn},
1476 "Number of allowed warnings during input processing. Not for normal use and may generate unstable systems" },
1477 { "-zero", FALSE, etBOOL, {&bZero},
1478 "Set parameters for bonded interactions without defaults to zero instead of generating an error" },
1479 { "-renum", FALSE, etBOOL, {&bRenum},
1480 "Renumber atomtypes and minimize number of atomtypes" }
1483 /* Initiate some variables */
1488 /* Parse the command line */
1489 if (!parse_common_args(&argc, argv, 0, NFILE, fnm, asize(pa), pa,
1490 asize(desc), desc, 0, NULL, &oenv))
1495 wi = init_warning(TRUE, maxwarn);
1497 /* PARAMETER file processing */
1498 mdparin = opt2fn("-f", NFILE, fnm);
1499 set_warning_line(wi, mdparin, -1);
1500 get_ir(mdparin, opt2fn("-po", NFILE, fnm), ir, opts, wi);
1504 fprintf(stderr, "checking input for internal consistency...\n");
1506 check_ir(mdparin, ir, opts, wi);
1508 if (ir->ld_seed == -1)
1510 ir->ld_seed = make_seed();
1511 fprintf(stderr, "Setting the LD random seed to %d\n", ir->ld_seed);
1514 if (ir->expandedvals->lmc_seed == -1)
1516 ir->expandedvals->lmc_seed = make_seed();
1517 fprintf(stderr, "Setting the lambda MC random seed to %d\n", ir->expandedvals->lmc_seed);
1520 bNeedVel = EI_STATE_VELOCITY(ir->eI);
1521 bGenVel = (bNeedVel && opts->bGenVel);
1522 if (bGenVel && ir->bContinuation)
1525 "Generating velocities is inconsistent with attempting "
1526 "to continue a previous run. Choose only one of "
1527 "gen-vel = yes and continuation = yes.");
1528 warning_error(wi, warn_buf);
1534 atype = init_atomtype();
1537 pr_symtab(debug, 0, "Just opened", &sys->symtab);
1540 strcpy(fn, ftp2fn(efTOP, NFILE, fnm));
1541 if (!gmx_fexist(fn))
1543 gmx_fatal(FARGS, "%s does not exist", fn);
1545 new_status(fn, opt2fn_null("-pp", NFILE, fnm), opt2fn("-c", NFILE, fnm),
1546 opts, ir, bZero, bGenVel, bVerbose, &state,
1547 atype, sys, &nmi, &mi, plist, &comb, &reppow, &fudgeQQ,
1553 pr_symtab(debug, 0, "After new_status", &sys->symtab);
1557 /* set parameters for virtual site construction (not for vsiten) */
1558 for (mt = 0; mt < sys->nmoltype; mt++)
1561 set_vsites(bVerbose, &sys->moltype[mt].atoms, atype, mi[mt].plist);
1563 /* now throw away all obsolete bonds, angles and dihedrals: */
1564 /* note: constraints are ALWAYS removed */
1567 for (mt = 0; mt < sys->nmoltype; mt++)
1569 clean_vsite_bondeds(mi[mt].plist, sys->moltype[mt].atoms.nr, bRmVSBds);
1573 if (ir->cutoff_scheme == ecutsVERLET)
1575 fprintf(stderr, "Removing all charge groups because cutoff-scheme=%s\n",
1576 ecutscheme_names[ir->cutoff_scheme]);
1578 /* Remove all charge groups */
1579 gmx_mtop_remove_chargegroups(sys);
1581 if (EVDW_PME(ir->vdwtype))
1583 gmx_fatal(FARGS, "LJ-PME not implemented together with verlet-scheme!");
1587 if (count_constraints(sys, mi, wi) && (ir->eConstrAlg == econtSHAKE))
1589 if (ir->eI == eiCG || ir->eI == eiLBFGS)
1591 sprintf(warn_buf, "Can not do %s with %s, use %s",
1592 EI(ir->eI), econstr_names[econtSHAKE], econstr_names[econtLINCS]);
1593 warning_error(wi, warn_buf);
1595 if (ir->bPeriodicMols)
1597 sprintf(warn_buf, "Can not do periodic molecules with %s, use %s",
1598 econstr_names[econtSHAKE], econstr_names[econtLINCS]);
1599 warning_error(wi, warn_buf);
1603 if (EI_SD (ir->eI) && ir->etc != etcNO)
1605 warning_note(wi, "Temperature coupling is ignored with SD integrators.");
1608 /* If we are doing QM/MM, check that we got the atom numbers */
1609 have_atomnumber = TRUE;
1610 for (i = 0; i < get_atomtype_ntypes(atype); i++)
1612 have_atomnumber = have_atomnumber && (get_atomtype_atomnumber(i, atype) >= 0);
1614 if (!have_atomnumber && ir->bQMMM)
1618 "It appears as if you are trying to run a QM/MM calculation, but the force\n"
1619 "field you are using does not contain atom numbers fields. This is an\n"
1620 "optional field (introduced in Gromacs 3.3) for general runs, but mandatory\n"
1621 "for QM/MM. The good news is that it is easy to add - put the atom number as\n"
1622 "an integer just before the mass column in ffXXXnb.itp.\n"
1623 "NB: United atoms have the same atom numbers as normal ones.\n\n");
1628 if ((ir->adress->const_wf > 1) || (ir->adress->const_wf < 0))
1630 warning_error(wi, "AdResS contant weighting function should be between 0 and 1\n\n");
1632 /** \TODO check size of ex+hy width against box size */
1635 /* Check for errors in the input now, since they might cause problems
1636 * during processing further down.
1638 check_warning_error(wi, FARGS);
1640 if (opt2bSet("-r", NFILE, fnm))
1642 sprintf(fn, "%s", opt2fn("-r", NFILE, fnm));
1646 sprintf(fn, "%s", opt2fn("-c", NFILE, fnm));
1648 if (opt2bSet("-rb", NFILE, fnm))
1650 sprintf(fnB, "%s", opt2fn("-rb", NFILE, fnm));
1657 if (nint_ftype(sys, mi, F_POSRES) > 0 || nint_ftype(sys, mi, F_FBPOSRES) > 0)
1661 fprintf(stderr, "Reading position restraint coords from %s", fn);
1662 if (strcmp(fn, fnB) == 0)
1664 fprintf(stderr, "\n");
1668 fprintf(stderr, " and %s\n", fnB);
1671 gen_posres(sys, mi, fn, fnB,
1672 ir->refcoord_scaling, ir->ePBC,
1673 ir->posres_com, ir->posres_comB,
1677 /* If we are using CMAP, setup the pre-interpolation grid */
1678 if (plist->ncmap > 0)
1680 init_cmap_grid(&sys->ffparams.cmap_grid, plist->nc, plist->grid_spacing);
1681 setup_cmap(plist->grid_spacing, plist->nc, plist->cmap, &sys->ffparams.cmap_grid);
1684 set_wall_atomtype(atype, opts, ir, wi);
1687 renum_atype(plist, sys, ir->wall_atomtype, atype, bVerbose);
1688 ntype = get_atomtype_ntypes(atype);
1691 if (ir->implicit_solvent != eisNO)
1693 /* Now we have renumbered the atom types, we can check the GBSA params */
1694 check_gbsa_params(atype);
1696 /* Check that all atoms that have charge and/or LJ-parameters also have
1697 * sensible GB-parameters
1699 check_gbsa_params_charged(sys, atype);
1702 /* PELA: Copy the atomtype data to the topology atomtype list */
1703 copy_atomtype_atomtypes(atype, &(sys->atomtypes));
1707 pr_symtab(debug, 0, "After renum_atype", &sys->symtab);
1712 fprintf(stderr, "converting bonded parameters...\n");
1715 ntype = get_atomtype_ntypes(atype);
1716 convert_params(ntype, plist, mi, comb, reppow, fudgeQQ, sys);
1720 pr_symtab(debug, 0, "After convert_params", &sys->symtab);
1723 /* set ptype to VSite for virtual sites */
1724 for (mt = 0; mt < sys->nmoltype; mt++)
1726 set_vsites_ptype(FALSE, &sys->moltype[mt]);
1730 pr_symtab(debug, 0, "After virtual sites", &sys->symtab);
1732 /* Check velocity for virtual sites and shells */
1735 check_vel(sys, state.v);
1741 for (i = 0; i < sys->nmoltype; i++)
1743 check_cg_sizes(ftp2fn(efTOP, NFILE, fnm), &sys->moltype[i].cgs, wi);
1746 if (EI_DYNAMICS(ir->eI) && ir->eI != eiBD)
1748 check_bonds_timestep(sys, ir->delta_t, wi);
1751 if (EI_ENERGY_MINIMIZATION(ir->eI) && 0 == ir->nsteps)
1753 warning_note(wi, "Zero-step energy minimization will alter the coordinates before calculating the energy. If you just want the energy of a single point, try zero-step MD (with unconstrained_start = yes). To do multiple single-point energy evaluations of different configurations of the same topology, use mdrun -rerun.");
1756 check_warning_error(wi, FARGS);
1760 fprintf(stderr, "initialising group options...\n");
1762 do_index(mdparin, ftp2fn_null(efNDX, NFILE, fnm),
1764 bGenVel ? state.v : NULL,
1767 if (ir->cutoff_scheme == ecutsVERLET && ir->verletbuf_tol > 0 &&
1770 if (EI_DYNAMICS(ir->eI) &&
1771 !(EI_MD(ir->eI) && ir->etc == etcNO) &&
1772 inputrec2nboundeddim(ir) == 3)
1774 set_verlet_buffer(sys, ir, state.box, wi);
1778 /* Init the temperature coupling state */
1779 init_gtc_state(&state, ir->opts.ngtc, 0, ir->opts.nhchainlength); /* need to add nnhpres here? */
1783 fprintf(stderr, "Checking consistency between energy and charge groups...\n");
1785 check_eg_vs_cg(sys);
1789 pr_symtab(debug, 0, "After index", &sys->symtab);
1792 triple_check(mdparin, ir, sys, wi);
1793 close_symtab(&sys->symtab);
1796 pr_symtab(debug, 0, "After close", &sys->symtab);
1799 /* make exclusions between QM atoms */
1802 if (ir->QMMMscheme == eQMMMschemenormal && ir->ns_type == ensSIMPLE)
1804 gmx_fatal(FARGS, "electrostatic embedding only works with grid neighboursearching, use ns-type=grid instead\n");
1808 generate_qmexcl(sys, ir, wi);
1812 if (ftp2bSet(efTRN, NFILE, fnm))
1816 fprintf(stderr, "getting data from old trajectory ...\n");
1818 cont_status(ftp2fn(efTRN, NFILE, fnm), ftp2fn_null(efEDR, NFILE, fnm),
1819 bNeedVel, bGenVel, fr_time, ir, &state, sys, oenv);
1822 if (ir->ePBC == epbcXY && ir->nwall != 2)
1824 clear_rvec(state.box[ZZ]);
1827 if (ir->cutoff_scheme != ecutsVERLET && ir->rlist > 0)
1829 set_warning_line(wi, mdparin, -1);
1830 check_chargegroup_radii(sys, ir, state.x, wi);
1833 if (EEL_FULL(ir->coulombtype) || EVDW_PME(ir->vdwtype))
1835 /* Calculate the optimal grid dimensions */
1836 copy_mat(state.box, box);
1837 if (ir->ePBC == epbcXY && ir->nwall == 2)
1839 svmul(ir->wall_ewald_zfac, box[ZZ], box[ZZ]);
1841 if (ir->nkx > 0 && ir->nky > 0 && ir->nkz > 0)
1843 /* Mark fourier_spacing as not used */
1844 ir->fourier_spacing = 0;
1846 else if (ir->nkx != 0 && ir->nky != 0 && ir->nkz != 0)
1848 set_warning_line(wi, mdparin, -1);
1849 warning_error(wi, "Some of the Fourier grid sizes are set, but all of them need to be set.");
1851 max_spacing = calc_grid(stdout, box, ir->fourier_spacing,
1852 &(ir->nkx), &(ir->nky), &(ir->nkz));
1855 /* MRS: eventually figure out better logic for initializing the fep
1856 values that makes declaring the lambda and declaring the state not
1857 potentially conflict if not handled correctly. */
1858 if (ir->efep != efepNO)
1860 if (EVDW_PME(ir->vdwtype))
1862 gmx_fatal(FARGS, "LJ-PME not implemented together with free energy calculations!");
1865 state.fep_state = ir->fepvals->init_fep_state;
1866 for (i = 0; i < efptNR; i++)
1868 /* init_lambda trumps state definitions*/
1869 if (ir->fepvals->init_lambda >= 0)
1871 state.lambda[i] = ir->fepvals->init_lambda;
1875 if (ir->fepvals->all_lambda[i] == NULL)
1877 gmx_fatal(FARGS, "Values of lambda not set for a free energy calculation!");
1881 state.lambda[i] = ir->fepvals->all_lambda[i][state.fep_state];
1887 if (ir->ePull != epullNO)
1889 set_pull_init(ir, sys, state.x, state.box, state.lambda[efptMASS], oenv, opts->pull_start);
1894 set_reference_positions(ir->rot, state.x, state.box,
1895 opt2fn("-ref", NFILE, fnm), opt2bSet("-ref", NFILE, fnm),
1899 /* reset_multinr(sys); */
1901 if (EEL_PME(ir->coulombtype))
1903 float ratio = pme_load_estimate(sys, ir, state.box);
1904 fprintf(stderr, "Estimate for the relative computational load of the PME mesh part: %.2f\n", ratio);
1905 /* With free energy we might need to do PME both for the A and B state
1906 * charges. This will double the cost, but the optimal performance will
1907 * then probably be at a slightly larger cut-off and grid spacing.
1909 if ((ir->efep == efepNO && ratio > 1.0/2.0) ||
1910 (ir->efep != efepNO && ratio > 2.0/3.0))
1913 "The optimal PME mesh load for parallel simulations is below 0.5\n"
1914 "and for highly parallel simulations between 0.25 and 0.33,\n"
1915 "for higher performance, increase the cut-off and the PME grid spacing.\n");
1916 if (ir->efep != efepNO)
1919 "For free energy simulations, the optimal load limit increases from 0.5 to 0.667\n");
1925 char warn_buf[STRLEN];
1926 double cio = compute_io(ir, sys->natoms, &sys->groups, F_NRE, 1);
1927 sprintf(warn_buf, "This run will generate roughly %.0f Mb of data", cio);
1930 set_warning_line(wi, mdparin, -1);
1931 warning_note(wi, warn_buf);
1935 printf("%s\n", warn_buf);
1941 fprintf(stderr, "writing run input file...\n");
1944 done_warning(wi, FARGS);
1946 write_tpx_state(ftp2fn(efTPX, NFILE, fnm), ir, &state, sys);