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49 #include <sys/types.h>
51 #include "gromacs/utility/futil.h"
53 #include "gromacs/utility/smalloc.h"
55 #include "gromacs/fileio/gmxfio.h"
57 #include "gromacs/math/units.h"
60 #include "gromacs/utility/cstringutil.h"
62 #include "gromacs/utility/fatalerror.h"
64 #include "vsite_parm.h"
66 #include "grompp-impl.h"
70 #include "gpp_nextnb.h"
74 #include "gpp_bond_atomtype.h"
76 #include "gromacs/math/utilities.h"
78 #define OPENDIR '[' /* starting sign for directive */
79 #define CLOSEDIR ']' /* ending sign for directive */
81 static void free_nbparam(t_nbparam
**param
, int nr
)
85 for (i
= 0; i
< nr
; i
++)
92 static int copy_nbparams(t_nbparam
**param
, int ftype
, t_params
*plist
, int nr
)
100 for (i
= 0; i
< nr
; i
++)
102 for (j
= 0; j
<= i
; j
++)
104 if (param
[i
][j
].bSet
)
106 for (f
= 0; f
< nrfp
; f
++)
108 plist
->param
[nr
*i
+j
].c
[f
] = param
[i
][j
].c
[f
];
109 plist
->param
[nr
*j
+i
].c
[f
] = param
[i
][j
].c
[f
];
119 static void gen_pairs(t_params
*nbs
, t_params
*pairs
, real fudge
, int comb
)
121 int i
, j
, ntp
, nrfp
, nrfpA
, nrfpB
, nnn
;
126 nrfpA
= interaction_function
[F_LJ14
].nrfpA
;
127 nrfpB
= interaction_function
[F_LJ14
].nrfpB
;
130 if ((nrfp
!= nrfpA
) || (nrfpA
!= nrfpB
))
132 gmx_incons("Number of force parameters in gen_pairs wrong");
135 fprintf(stderr
, "Generating 1-4 interactions: fudge = %g\n", fudge
);
138 fprintf(debug
, "Fudge factor for 1-4 interactions: %g\n", fudge
);
139 fprintf(debug
, "Holy Cow! there are %d types\n", ntp
);
141 snew(pairs
->param
, pairs
->nr
);
142 for (i
= 0; (i
< ntp
); i
++)
145 pairs
->param
[i
].a
[0] = i
/ nnn
;
146 pairs
->param
[i
].a
[1] = i
% nnn
;
147 /* Copy normal and FEP parameters and multiply by fudge factor */
151 for (j
= 0; (j
< nrfp
); j
++)
153 /* If we are using sigma/epsilon values, only the epsilon values
154 * should be scaled, but not sigma.
155 * The sigma values have even indices 0,2, etc.
157 if ((comb
== eCOMB_ARITHMETIC
|| comb
== eCOMB_GEOM_SIG_EPS
) && (j
%2 == 0))
166 pairs
->param
[i
].c
[j
] = scaling
*nbs
->param
[i
].c
[j
];
167 pairs
->param
[i
].c
[nrfp
+j
] = scaling
*nbs
->param
[i
].c
[j
];
172 double check_mol(gmx_mtop_t
*mtop
, warninp_t wi
)
175 int i
, mb
, nmol
, ri
, pt
;
180 /* Check mass and charge */
183 for (mb
= 0; mb
< mtop
->nmoltype
; mb
++)
185 atoms
= &mtop
->moltype
[mtop
->molblock
[mb
].type
].atoms
;
186 nmol
= mtop
->molblock
[mb
].nmol
;
187 for (i
= 0; (i
< atoms
->nr
); i
++)
189 q
+= nmol
*atoms
->atom
[i
].q
;
190 m
= atoms
->atom
[i
].m
;
191 pt
= atoms
->atom
[i
].ptype
;
192 /* If the particle is an atom or a nucleus it must have a mass,
193 * else, if it is a shell, a vsite or a bondshell it can have mass zero
195 if ((m
<= 0.0) && ((pt
== eptAtom
) || (pt
== eptNucleus
)))
197 ri
= atoms
->atom
[i
].resind
;
198 sprintf(buf
, "atom %s (Res %s-%d) has mass %g\n",
199 *(atoms
->atomname
[i
]),
200 *(atoms
->resinfo
[ri
].name
),
201 atoms
->resinfo
[ri
].nr
,
203 warning_error(wi
, buf
);
206 if ((m
!= 0) && (pt
== eptVSite
))
208 ri
= atoms
->atom
[i
].resind
;
209 sprintf(buf
, "virtual site %s (Res %s-%d) has non-zero mass %g\n"
210 " Check your topology.\n",
211 *(atoms
->atomname
[i
]),
212 *(atoms
->resinfo
[ri
].name
),
213 atoms
->resinfo
[ri
].nr
,
215 warning_error(wi
, buf
);
216 /* The following statements make LINCS break! */
217 /* atoms->atom[i].m=0; */
224 static void sum_q(t_atoms
*atoms
, int n
, double *qt
, double *qBt
)
232 for (i
= 0; i
< atoms
->nr
; i
++)
234 qmolA
+= atoms
->atom
[i
].q
;
235 qmolB
+= atoms
->atom
[i
].qB
;
237 /* Unfortunately an absolute comparison,
238 * but this avoids unnecessary warnings and gmx-users mails.
240 if (fabs(qmolA
) >= 1e-6 || fabs(qmolB
) >= 1e-6)
247 static void get_nbparm(char *nb_str
, char *comb_str
, int *nb
, int *comb
,
251 char warn_buf
[STRLEN
];
254 for (i
= 1; (i
< eNBF_NR
); i
++)
256 if (gmx_strcasecmp(nb_str
, enbf_names
[i
]) == 0)
263 *nb
= strtol(nb_str
, NULL
, 10);
265 if ((*nb
< 1) || (*nb
>= eNBF_NR
))
267 sprintf(warn_buf
, "Invalid nonbond function selector '%s' using %s",
268 nb_str
, enbf_names
[1]);
269 warning_error(wi
, warn_buf
);
273 for (i
= 1; (i
< eCOMB_NR
); i
++)
275 if (gmx_strcasecmp(comb_str
, ecomb_names
[i
]) == 0)
282 *comb
= strtol(comb_str
, NULL
, 10);
284 if ((*comb
< 1) || (*comb
>= eCOMB_NR
))
286 sprintf(warn_buf
, "Invalid combination rule selector '%s' using %s",
287 comb_str
, ecomb_names
[1]);
288 warning_error(wi
, warn_buf
);
293 static char ** cpp_opts(const char *define
, const char *include
,
298 const char *cppadds
[2];
299 char **cppopts
= NULL
;
300 const char *option
[2] = { "-D", "-I" };
301 const char *nopt
[2] = { "define", "include" };
305 char warn_buf
[STRLEN
];
308 cppadds
[1] = include
;
309 for (n
= 0; (n
< 2); n
++)
316 while ((*ptr
!= '\0') && isspace(*ptr
))
321 while ((*rptr
!= '\0') && !isspace(*rptr
))
329 strncpy(buf
, ptr
, len
);
330 if (strstr(ptr
, option
[n
]) != ptr
)
332 set_warning_line(wi
, "mdp file", -1);
333 sprintf(warn_buf
, "Malformed %s option %s", nopt
[n
], buf
);
334 warning(wi
, warn_buf
);
338 srenew(cppopts
, ++ncppopts
);
339 cppopts
[ncppopts
-1] = strdup(buf
);
347 srenew(cppopts
, ++ncppopts
);
348 cppopts
[ncppopts
-1] = NULL
;
355 find_gb_bondlength(t_params
*plist
, int ai
, int aj
, real
*length
)
362 for (i
= 0; i
< F_NRE
&& !found
; i
++)
366 for (j
= 0; j
< plist
[i
].nr
; j
++)
368 a1
= plist
[i
].param
[j
].a
[0];
369 a2
= plist
[i
].param
[j
].a
[1];
371 if ( (a1
== ai
&& a2
== aj
) || (a1
== aj
&& a2
== ai
))
373 /* Equilibrium bond distance */
374 *length
= plist
[i
].param
[j
].c
[0];
387 find_gb_anglelength(t_params
*plist
, int ai
, int ak
, real
*length
)
389 int i
, j
, a1
, a2
, a3
;
392 int status
, status1
, status2
;
396 for (i
= 0; i
< F_NRE
&& !found
; i
++)
400 for (j
= 0; j
< plist
[i
].nr
; j
++)
402 a1
= plist
[i
].param
[j
].a
[0];
403 a2
= plist
[i
].param
[j
].a
[1];
404 a3
= plist
[i
].param
[j
].a
[2];
406 /* We dont care what the middle atom is, but use it below */
407 if ( (a1
== ai
&& a3
== ak
) || (a1
== ak
&& a3
== ai
) )
409 /* Equilibrium bond distance */
410 a123
= plist
[i
].param
[j
].c
[0];
411 /* Use middle atom to find reference distances r12 and r23 */
412 status1
= find_gb_bondlength(plist
, a1
, a2
, &r12
);
413 status2
= find_gb_bondlength(plist
, a2
, a3
, &r23
);
415 if (status1
== 0 && status2
== 0)
417 /* cosine theorem to get r13 */
418 *length
= sqrt(r12
*r12
+r23
*r23
-(2*r12
*r23
*cos(a123
/RAD2DEG
)));
431 generate_gb_exclusion_interactions(t_molinfo
*mi
, gpp_atomtype_t atype
, t_nextnb
*nnb
)
433 int i
, j
, k
, n
, ai
, aj
, ti
, tj
;
439 real radiusi
, radiusj
;
440 real gb_radiusi
, gb_radiusj
;
441 real param_c2
, param_c4
;
447 for (n
= 1; n
<= nnb
->nrex
; n
++)
462 /* Put all higher-order exclusions into 1,4 list so we dont miss them */
469 for (ai
= 0; ai
< nnb
->nr
; ai
++)
471 ti
= at
->atom
[ai
].type
;
472 radiusi
= get_atomtype_radius(ti
, atype
);
473 gb_radiusi
= get_atomtype_gb_radius(ti
, atype
);
475 for (j
= 0; j
< nnb
->nrexcl
[ai
][n
]; j
++)
477 aj
= nnb
->a
[ai
][n
][j
];
479 /* Only add the interactions once */
482 tj
= at
->atom
[aj
].type
;
483 radiusj
= get_atomtype_radius(tj
, atype
);
484 gb_radiusj
= get_atomtype_gb_radius(tj
, atype
);
486 /* There is an exclusion of type "ftype" between atoms ai and aj */
490 /* Reference distance, not used for 1-4 interactions */
494 if (find_gb_bondlength(plist
, ai
, aj
, &distance
) != 0)
496 gmx_fatal(FARGS
, "Cannot find bond length for atoms %d-%d", ai
, aj
);
500 if (find_gb_anglelength(plist
, ai
, aj
, &distance
) != 0)
502 gmx_fatal(FARGS
, "Cannot find length for atoms %d-%d involved in angle", ai
, aj
);
509 /* Assign GB parameters */
511 param
.c
[0] = radiusi
+radiusj
;
512 /* Reference distance distance */
513 param
.c
[1] = distance
;
514 /* Still parameter */
515 param
.c
[2] = param_c2
;
517 param
.c
[3] = gb_radiusi
+gb_radiusj
;
519 param
.c
[4] = param_c4
;
521 /* Add it to the parameter list */
522 add_param_to_list(&plist
[ftype
], ¶m
);
533 static char **read_topol(const char *infile
, const char *outfile
,
534 const char *define
, const char *include
,
536 gpp_atomtype_t atype
,
540 int *combination_rule
,
545 gmx_molblock_t
**molblock
,
552 int i
, sl
, nb_funct
, comb
;
553 char *pline
= NULL
, **title
= NULL
;
554 char line
[STRLEN
], errbuf
[256], comb_str
[256], nb_str
[256];
556 char *dirstr
, *dummy2
;
557 int nrcopies
, nmol
, nmolb
= 0, nscan
, ncombs
, ncopy
;
558 double fLJ
, fQQ
, fPOW
;
559 gmx_molblock_t
*molb
= NULL
;
560 t_topology
*block
= NULL
;
561 t_molinfo
*mi0
= NULL
;
564 t_nbparam
**nbparam
, **pair
;
566 real fudgeLJ
= -1; /* Multiplication factor to generate 1-4 from LJ */
567 gmx_bool bReadDefaults
, bReadMolType
, bGenPairs
, bWarn_copy_A_B
;
568 double qt
= 0, qBt
= 0; /* total charge */
569 t_bond_atomtype batype
;
571 int dcatt
= -1, nmol_couple
;
572 /* File handling variables */
575 char *tmp_line
= NULL
;
576 char warn_buf
[STRLEN
];
577 const char *floating_point_arithmetic_tip
=
578 "Total charge should normally be an integer. See\n"
579 "http://www.gromacs.org/Documentation/Floating_Point_Arithmetic\n"
580 "for discussion on how close it should be to an integer.\n";
581 /* We need to open the output file before opening the input file,
582 * because cpp_open_file can change the current working directory.
586 out
= gmx_fio_fopen(outfile
, "w");
593 /* open input file */
594 status
= cpp_open_file(infile
, &handle
, cpp_opts(define
, include
, wi
));
597 gmx_fatal(FARGS
, cpp_error(&handle
, status
));
600 /* some local variables */
601 DS_Init(&DS
); /* directive stack */
602 nmol
= 0; /* no molecules yet... */
603 d
= d_invalid
; /* first thing should be a directive */
604 nbparam
= NULL
; /* The temporary non-bonded matrix */
605 pair
= NULL
; /* The temporary pair interaction matrix */
606 block2
= NULL
; /* the extra exclusions */
608 *reppow
= 12.0; /* Default value for repulsion power */
612 /* Init the number of CMAP torsion angles and grid spacing */
613 plist
->grid_spacing
= 0;
616 bWarn_copy_A_B
= bFEP
;
618 batype
= init_bond_atomtype();
619 /* parse the actual file */
620 bReadDefaults
= FALSE
;
622 bReadMolType
= FALSE
;
627 status
= cpp_read_line(&handle
, STRLEN
, line
);
628 done
= (status
== eCPP_EOF
);
631 if (status
!= eCPP_OK
)
633 gmx_fatal(FARGS
, cpp_error(&handle
, status
));
637 fprintf(out
, "%s\n", line
);
640 set_warning_line(wi
, cpp_cur_file(&handle
), cpp_cur_linenr(&handle
));
642 pline
= strdup(line
);
644 /* Strip trailing '\' from pline, if it exists */
646 if ((sl
> 0) && (pline
[sl
-1] == CONTINUE
))
651 /* build one long line from several fragments - necessary for CMAP */
652 while (continuing(line
))
654 status
= cpp_read_line(&handle
, STRLEN
, line
);
655 set_warning_line(wi
, cpp_cur_file(&handle
), cpp_cur_linenr(&handle
));
657 /* Since we depend on the '\' being present to continue to read, we copy line
658 * to a tmp string, strip the '\' from that string, and cat it to pline
660 tmp_line
= strdup(line
);
662 sl
= strlen(tmp_line
);
663 if ((sl
> 0) && (tmp_line
[sl
-1] == CONTINUE
))
665 tmp_line
[sl
-1] = ' ';
668 done
= (status
== eCPP_EOF
);
671 if (status
!= eCPP_OK
)
673 gmx_fatal(FARGS
, cpp_error(&handle
, status
));
677 fprintf(out
, "%s\n", line
);
681 srenew(pline
, strlen(pline
)+strlen(tmp_line
)+1);
682 strcat(pline
, tmp_line
);
686 /* skip trailing and leading spaces and comment text */
687 strip_comment (pline
);
690 /* if there is something left... */
691 if ((int)strlen(pline
) > 0)
693 if (pline
[0] == OPENDIR
)
695 /* A directive on this line: copy the directive
696 * without the brackets into dirstr, then
697 * skip spaces and tabs on either side of directive
699 dirstr
= strdup((pline
+1));
700 if ((dummy2
= strchr (dirstr
, CLOSEDIR
)) != NULL
)
706 if ((newd
= str2dir(dirstr
)) == d_invalid
)
708 sprintf(errbuf
, "Invalid directive %s", dirstr
);
709 warning_error(wi
, errbuf
);
713 /* Directive found */
716 fprintf(debug
, "found directive '%s'\n", dir2str(newd
));
718 if (DS_Check_Order (DS
, newd
))
725 /* we should print here which directives should have
726 been present, and which actually are */
727 gmx_fatal(FARGS
, "%s\nInvalid order for directive %s",
728 cpp_error(&handle
, eCPP_SYNTAX
), dir2str(newd
));
734 else if (d
!= d_invalid
)
736 /* Not a directive, just a plain string
737 * use a gigantic switch to decode,
738 * if there is a valid directive!
745 gmx_fatal(FARGS
, "%s\nFound a second defaults directive.\n",
746 cpp_error(&handle
, eCPP_SYNTAX
));
748 bReadDefaults
= TRUE
;
749 nscan
= sscanf(pline
, "%s%s%s%lf%lf%lf",
750 nb_str
, comb_str
, genpairs
, &fLJ
, &fQQ
, &fPOW
);
761 get_nbparm(nb_str
, comb_str
, &nb_funct
, &comb
, wi
);
762 *combination_rule
= comb
;
765 bGenPairs
= (gmx_strncasecmp(genpairs
, "Y", 1) == 0);
766 if (nb_funct
!= eNBF_LJ
&& bGenPairs
)
768 gmx_fatal(FARGS
, "Generating pair parameters is only supported with LJ non-bonded interactions");
784 nb_funct
= ifunc_index(d_nonbond_params
, nb_funct
);
788 push_at(symtab
, atype
, batype
, pline
, nb_funct
,
789 &nbparam
, bGenPairs
? &pair
: NULL
, wi
);
793 push_bt(d
, plist
, 2, NULL
, batype
, pline
, wi
);
795 case d_constrainttypes
:
796 push_bt(d
, plist
, 2, NULL
, batype
, pline
, wi
);
801 push_nbt(d
, pair
, atype
, pline
, F_LJ14
, wi
);
805 push_bt(d
, plist
, 2, atype
, NULL
, pline
, wi
);
809 push_bt(d
, plist
, 3, NULL
, batype
, pline
, wi
);
811 case d_dihedraltypes
:
812 /* Special routine that can read both 2 and 4 atom dihedral definitions. */
813 push_dihedraltype(d
, plist
, batype
, pline
, wi
);
816 case d_nonbond_params
:
817 push_nbt(d
, nbparam
, atype
, pline
, nb_funct
, wi
);
822 srenew(block,nblock);
823 srenew(blockinfo,nblock);
824 blk0=&(block[nblock-1]);
825 bi0=&(blockinfo[nblock-1]);
828 push_molt(symtab,bi0,pline);
832 case d_implicit_genborn_params
:
833 push_gb_params(atype
, pline
, wi
);
836 case d_implicit_surface_params
:
837 gmx_fatal(FARGS
, "Implicit surface directive not supported yet.");
841 push_cmaptype(d
, plist
, 5, atype
, batype
, pline
, wi
);
849 if (opts
->couple_moltype
!= NULL
&&
850 (opts
->couple_lam0
== ecouplamNONE
||
851 opts
->couple_lam0
== ecouplamQ
||
852 opts
->couple_lam1
== ecouplamNONE
||
853 opts
->couple_lam1
== ecouplamQ
))
855 dcatt
= add_atomtype_decoupled(symtab
, atype
,
856 &nbparam
, bGenPairs
? &pair
: NULL
);
858 ntype
= get_atomtype_ntypes(atype
);
859 ncombs
= (ntype
*(ntype
+1))/2;
860 generate_nbparams(comb
, nb_funct
, &(plist
[nb_funct
]), atype
, wi
);
861 ncopy
= copy_nbparams(nbparam
, nb_funct
, &(plist
[nb_funct
]),
863 fprintf(stderr
, "Generated %d of the %d non-bonded parameter combinations\n", ncombs
-ncopy
, ncombs
);
864 free_nbparam(nbparam
, ntype
);
867 gen_pairs(&(plist
[nb_funct
]), &(plist
[F_LJ14
]), fudgeLJ
, comb
);
868 ncopy
= copy_nbparams(pair
, nb_funct
, &(plist
[F_LJ14
]),
870 fprintf(stderr
, "Generated %d of the %d 1-4 parameter combinations\n", ncombs
-ncopy
, ncombs
);
871 free_nbparam(pair
, ntype
);
873 /* Copy GBSA parameters to atomtype array? */
878 push_molt(symtab
, &nmol
, molinfo
, pline
, wi
);
879 srenew(block2
, nmol
);
880 block2
[nmol
-1].nr
= 0;
881 mi0
= &((*molinfo
)[nmol
-1]);
885 push_atom(symtab
, &(mi0
->cgs
), &(mi0
->atoms
), atype
, pline
, &lastcg
, wi
);
889 push_bond(d
, plist
, mi0
->plist
, &(mi0
->atoms
), atype
, pline
, FALSE
,
890 bGenPairs
, *fudgeQQ
, bZero
, &bWarn_copy_A_B
, wi
);
900 case d_position_restraints
:
901 case d_angle_restraints
:
902 case d_angle_restraints_z
:
903 case d_distance_restraints
:
904 case d_orientation_restraints
:
905 case d_dihedral_restraints
:
908 case d_water_polarization
:
909 case d_thole_polarization
:
910 push_bond(d
, plist
, mi0
->plist
, &(mi0
->atoms
), atype
, pline
, TRUE
,
911 bGenPairs
, *fudgeQQ
, bZero
, &bWarn_copy_A_B
, wi
);
914 push_cmap(d
, plist
, mi0
->plist
, &(mi0
->atoms
), atype
, pline
, wi
);
918 push_vsitesn(d
, mi0
->plist
, &(mi0
->atoms
), pline
, wi
);
922 if (!block2
[nmol
-1].nr
)
924 init_block2(&(block2
[nmol
-1]), mi0
->atoms
.nr
);
926 push_excl(pline
, &(block2
[nmol
-1]));
930 title
= put_symtab(symtab
, pline
);
937 push_mol(nmol
, *molinfo
, pline
, &whichmol
, &nrcopies
, wi
);
938 mi0
= &((*molinfo
)[whichmol
]);
939 srenew(molb
, nmolb
+1);
940 molb
[nmolb
].type
= whichmol
;
941 molb
[nmolb
].nmol
= nrcopies
;
944 bCouple
= (opts
->couple_moltype
!= NULL
&&
945 (gmx_strcasecmp("system", opts
->couple_moltype
) == 0 ||
946 gmx_strcasecmp(*(mi0
->name
), opts
->couple_moltype
) == 0));
949 nmol_couple
+= nrcopies
;
952 if (mi0
->atoms
.nr
== 0)
954 gmx_fatal(FARGS
, "Molecule type '%s' contains no atoms",
958 "Excluding %d bonded neighbours molecule type '%s'\n",
959 mi0
->nrexcl
, *mi0
->name
);
960 sum_q(&mi0
->atoms
, nrcopies
, &qt
, &qBt
);
961 if (!mi0
->bProcessed
)
964 generate_excl(mi0
->nrexcl
,
969 merge_excl(&(mi0
->excls
), &(block2
[whichmol
]));
970 done_block2(&(block2
[whichmol
]));
971 make_shake(mi0
->plist
, &mi0
->atoms
, opts
->nshake
);
975 /* nnb contains information about first,2nd,3rd bonded neighbors.
976 * Use this to generate GB 1-2,1-3,1-4 interactions when necessary.
978 if (bGenborn
== TRUE
)
980 generate_gb_exclusion_interactions(mi0
, atype
, &nnb
);
987 convert_moltype_couple(mi0
, dcatt
, *fudgeQQ
,
988 opts
->couple_lam0
, opts
->couple_lam1
,
990 nb_funct
, &(plist
[nb_funct
]));
992 stupid_fill_block(&mi0
->mols
, mi0
->atoms
.nr
, TRUE
);
993 mi0
->bProcessed
= TRUE
;
998 fprintf (stderr
, "case: %d\n", d
);
999 gmx_incons("unknown directive");
1008 status
= cpp_close_file(&handle
);
1009 if (status
!= eCPP_OK
)
1011 gmx_fatal(FARGS
, cpp_error(&handle
, status
));
1016 gmx_fio_fclose(out
);
1019 if (opts
->couple_moltype
)
1021 if (nmol_couple
== 0)
1023 gmx_fatal(FARGS
, "Did not find any molecules of type '%s' for coupling",
1024 opts
->couple_moltype
);
1026 fprintf(stderr
, "Coupling %d copies of molecule type '%s'\n",
1027 nmol_couple
, opts
->couple_moltype
);
1030 /* this is not very clean, but fixes core dump on empty system name */
1033 title
= put_symtab(symtab
, "");
1035 if (fabs(qt
) > 1e-4)
1037 sprintf(warn_buf
, "System has non-zero total charge: %.6f\n%s\n", qt
, floating_point_arithmetic_tip
);
1038 warning_note(wi
, warn_buf
);
1040 if (fabs(qBt
) > 1e-4 && !gmx_within_tol(qBt
, qt
, 1e-6))
1042 sprintf(warn_buf
, "State B has non-zero total charge: %.6f\n%s\n", qBt
, floating_point_arithmetic_tip
);
1043 warning_note(wi
, warn_buf
);
1046 for (i
= 0; i
< nmol
; i
++)
1048 done_block2(&(block2
[i
]));
1052 done_bond_atomtype(&batype
);
1062 char **do_top(gmx_bool bVerbose
,
1063 const char *topfile
,
1064 const char *topppfile
,
1069 int *combination_rule
,
1070 double *repulsion_power
,
1072 gpp_atomtype_t atype
,
1074 t_molinfo
**molinfo
,
1077 gmx_molblock_t
**molblock
,
1081 /* Tmpfile might contain a long path */
1082 const char *tmpfile
;
1087 tmpfile
= topppfile
;
1096 printf("processing topology...\n");
1098 title
= read_topol(topfile
, tmpfile
, opts
->define
, opts
->include
,
1099 symtab
, atype
, nrmols
, molinfo
,
1100 plist
, combination_rule
, repulsion_power
,
1101 opts
, fudgeQQ
, nmolblock
, molblock
,
1102 ir
->efep
!= efepNO
, bGenborn
, bZero
, wi
);
1103 if ((*combination_rule
!= eCOMB_GEOMETRIC
) &&
1104 (ir
->vdwtype
== evdwUSER
))
1106 warning(wi
, "Using sigma/epsilon based combination rules with"
1107 " user supplied potential function may produce unwanted"
1115 static void generate_qmexcl_moltype(gmx_moltype_t
*molt
, unsigned char *grpnr
,
1118 /* This routine expects molt->ilist to be of size F_NRE and ordered. */
1120 /* generates the exclusions between the individual QM atoms, as
1121 * these interactions should be handled by the QM subroutines and
1122 * not by the gromacs routines
1125 i
, j
, l
, k
= 0, jmax
, qm_max
= 0, qm_nr
= 0, nratoms
= 0, link_nr
= 0, link_max
= 0;
1127 *qm_arr
= NULL
, *link_arr
= NULL
, a1
, a2
, a3
, a4
, ftype
= 0;
1133 *bQMMM
, *blink
, bexcl
;
1135 /* First we search and select the QM atoms in an qm_arr array that
1136 * we use to create the exclusions.
1138 * we take the possibility into account that a user has defined more
1139 * than one QM group:
1141 * for that we also need to do this an ugly work-about just in case
1142 * the QM group contains the entire system...
1144 jmax
= ir
->opts
.ngQM
;
1146 /* we first search for all the QM atoms and put them in an array
1148 for (j
= 0; j
< jmax
; j
++)
1150 for (i
= 0; i
< molt
->atoms
.nr
; i
++)
1152 if (qm_nr
>= qm_max
)
1155 srenew(qm_arr
, qm_max
);
1157 if ((grpnr
? grpnr
[i
] : 0) == j
)
1159 qm_arr
[qm_nr
++] = i
;
1163 /* bQMMM[..] is an array containin TRUE/FALSE for atoms that are
1164 * QM/not QM. We first set all elements to false. Afterwards we use
1165 * the qm_arr to change the elements corresponding to the QM atoms
1168 snew(bQMMM
, molt
->atoms
.nr
);
1169 for (i
= 0; i
< molt
->atoms
.nr
; i
++)
1173 for (i
= 0; i
< qm_nr
; i
++)
1175 bQMMM
[qm_arr
[i
]] = TRUE
;
1178 /* We remove all bonded interactions (i.e. bonds,
1179 * angles, dihedrals, 1-4's), involving the QM atoms. The way they
1180 * are removed is as follows: if the interaction invloves 2 atoms,
1181 * it is removed if both atoms are QMatoms. If it involves 3 atoms,
1182 * it is removed if at least two of the atoms are QM atoms, if the
1183 * interaction involves 4 atoms, it is removed if there are at least
1184 * 2 QM atoms. Since this routine is called once before any forces
1185 * are computed, the top->idef.il[N].iatom[] array (see idef.h) can
1186 * be rewritten at this poitn without any problem. 25-9-2002 */
1188 /* first check weter we already have CONNBONDS: */
1189 if (molt
->ilist
[F_CONNBONDS
].nr
!= 0)
1191 fprintf(stderr
, "nr. of CONNBONDS present already: %d\n",
1192 molt
->ilist
[F_CONNBONDS
].nr
/3);
1193 ftype
= molt
->ilist
[F_CONNBONDS
].iatoms
[0];
1194 k
= molt
->ilist
[F_CONNBONDS
].nr
;
1196 /* now we delete all bonded interactions, except the ones describing
1197 * a chemical bond. These are converted to CONNBONDS
1199 for (i
= 0; i
< F_LJ
; i
++)
1201 if (i
== F_CONNBONDS
)
1205 nratoms
= interaction_function
[i
].nratoms
;
1207 while (j
< molt
->ilist
[i
].nr
)
1213 a1
= molt
->ilist
[i
].iatoms
[j
+1];
1214 a2
= molt
->ilist
[i
].iatoms
[j
+2];
1215 bexcl
= (bQMMM
[a1
] && bQMMM
[a2
]);
1216 /* a bonded beteen two QM atoms will be copied to the
1217 * CONNBONDS list, for reasons mentioned above
1219 if (bexcl
&& i
< F_ANGLES
)
1221 srenew(molt
->ilist
[F_CONNBONDS
].iatoms
, k
+3);
1222 molt
->ilist
[F_CONNBONDS
].nr
+= 3;
1223 molt
->ilist
[F_CONNBONDS
].iatoms
[k
++] = ftype
;
1224 molt
->ilist
[F_CONNBONDS
].iatoms
[k
++] = a1
;
1225 molt
->ilist
[F_CONNBONDS
].iatoms
[k
++] = a2
;
1229 a1
= molt
->ilist
[i
].iatoms
[j
+1];
1230 a2
= molt
->ilist
[i
].iatoms
[j
+2];
1231 a3
= molt
->ilist
[i
].iatoms
[j
+3];
1232 bexcl
= ((bQMMM
[a1
] && bQMMM
[a2
]) ||
1233 (bQMMM
[a1
] && bQMMM
[a3
]) ||
1234 (bQMMM
[a2
] && bQMMM
[a3
]));
1237 a1
= molt
->ilist
[i
].iatoms
[j
+1];
1238 a2
= molt
->ilist
[i
].iatoms
[j
+2];
1239 a3
= molt
->ilist
[i
].iatoms
[j
+3];
1240 a4
= molt
->ilist
[i
].iatoms
[j
+4];
1241 bexcl
= ((bQMMM
[a1
] && bQMMM
[a2
] && bQMMM
[a3
]) ||
1242 (bQMMM
[a1
] && bQMMM
[a2
] && bQMMM
[a4
]) ||
1243 (bQMMM
[a1
] && bQMMM
[a3
] && bQMMM
[a4
]) ||
1244 (bQMMM
[a2
] && bQMMM
[a3
] && bQMMM
[a4
]));
1247 gmx_fatal(FARGS
, "no such bonded interactions with %d atoms\n", nratoms
);
1251 /* since the interaction involves QM atoms, these should be
1252 * removed from the MM ilist
1254 molt
->ilist
[i
].nr
-= (nratoms
+1);
1255 for (l
= j
; l
< molt
->ilist
[i
].nr
; l
++)
1257 molt
->ilist
[i
].iatoms
[l
] = molt
->ilist
[i
].iatoms
[l
+(nratoms
+1)];
1262 j
+= nratoms
+1; /* the +1 is for the functype */
1266 /* Now, we search for atoms bonded to a QM atom because we also want
1267 * to exclude their nonbonded interactions with the QM atoms. The
1268 * reason for this is that this interaction is accounted for in the
1269 * linkatoms interaction with the QMatoms and would be counted
1272 for (i
= 0; i
< F_NRE
; i
++)
1277 while (j
< molt
->ilist
[i
].nr
)
1279 a1
= molt
->ilist
[i
].iatoms
[j
+1];
1280 a2
= molt
->ilist
[i
].iatoms
[j
+2];
1281 if ((bQMMM
[a1
] && !bQMMM
[a2
]) || (!bQMMM
[a1
] && bQMMM
[a2
]))
1283 if (link_nr
>= link_max
)
1286 srenew(link_arr
, link_max
);
1290 link_arr
[link_nr
++] = a2
;
1294 link_arr
[link_nr
++] = a1
;
1301 snew(blink
, molt
->atoms
.nr
);
1302 for (i
= 0; i
< molt
->atoms
.nr
; i
++)
1306 for (i
= 0; i
< link_nr
; i
++)
1308 blink
[link_arr
[i
]] = TRUE
;
1310 /* creating the exclusion block for the QM atoms. Each QM atom has
1311 * as excluded elements all the other QMatoms (and itself).
1313 qmexcl
.nr
= molt
->atoms
.nr
;
1314 qmexcl
.nra
= qm_nr
*(qm_nr
+link_nr
)+link_nr
*qm_nr
;
1315 snew(qmexcl
.index
, qmexcl
.nr
+1);
1316 snew(qmexcl
.a
, qmexcl
.nra
);
1318 for (i
= 0; i
< qmexcl
.nr
; i
++)
1320 qmexcl
.index
[i
] = j
;
1323 for (k
= 0; k
< qm_nr
; k
++)
1325 qmexcl
.a
[k
+j
] = qm_arr
[k
];
1327 for (k
= 0; k
< link_nr
; k
++)
1329 qmexcl
.a
[qm_nr
+k
+j
] = link_arr
[k
];
1331 j
+= (qm_nr
+link_nr
);
1335 for (k
= 0; k
< qm_nr
; k
++)
1337 qmexcl
.a
[k
+j
] = qm_arr
[k
];
1342 qmexcl
.index
[qmexcl
.nr
] = j
;
1344 /* and merging with the exclusions already present in sys.
1347 init_block2(&qmexcl2
, molt
->atoms
.nr
);
1348 b_to_b2(&qmexcl
, &qmexcl2
);
1349 merge_excl(&(molt
->excls
), &qmexcl2
);
1350 done_block2(&qmexcl2
);
1352 /* Finally, we also need to get rid of the pair interactions of the
1353 * classical atom bonded to the boundary QM atoms with the QMatoms,
1354 * as this interaction is already accounted for by the QM, so also
1355 * here we run the risk of double counting! We proceed in a similar
1356 * way as we did above for the other bonded interactions: */
1357 for (i
= F_LJ14
; i
< F_COUL14
; i
++)
1359 nratoms
= interaction_function
[i
].nratoms
;
1361 while (j
< molt
->ilist
[i
].nr
)
1363 a1
= molt
->ilist
[i
].iatoms
[j
+1];
1364 a2
= molt
->ilist
[i
].iatoms
[j
+2];
1365 bexcl
= ((bQMMM
[a1
] && bQMMM
[a2
]) ||
1366 (blink
[a1
] && bQMMM
[a2
]) ||
1367 (bQMMM
[a1
] && blink
[a2
]));
1370 /* since the interaction involves QM atoms, these should be
1371 * removed from the MM ilist
1373 molt
->ilist
[i
].nr
-= (nratoms
+1);
1374 for (k
= j
; k
< molt
->ilist
[i
].nr
; k
++)
1376 molt
->ilist
[i
].iatoms
[k
] = molt
->ilist
[i
].iatoms
[k
+(nratoms
+1)];
1381 j
+= nratoms
+1; /* the +1 is for the functype */
1390 } /* generate_qmexcl */
1392 void generate_qmexcl(gmx_mtop_t
*sys
, t_inputrec
*ir
, warninp_t wi
)
1394 /* This routine expects molt->molt[m].ilist to be of size F_NRE and ordered.
1397 unsigned char *grpnr
;
1398 int mb
, mol
, nat_mol
, i
, nr_mol_with_qm_atoms
= 0;
1399 gmx_molblock_t
*molb
;
1402 grpnr
= sys
->groups
.grpnr
[egcQMMM
];
1404 for (mb
= 0; mb
< sys
->nmolblock
; mb
++)
1406 molb
= &sys
->molblock
[mb
];
1407 nat_mol
= sys
->moltype
[molb
->type
].atoms
.nr
;
1408 for (mol
= 0; mol
< molb
->nmol
; mol
++)
1411 for (i
= 0; i
< nat_mol
; i
++)
1413 if ((grpnr
? grpnr
[i
] : 0) < ir
->opts
.ngQM
)
1420 nr_mol_with_qm_atoms
++;
1423 /* We need to split this molblock */
1426 /* Split the molblock at this molecule */
1428 srenew(sys
->molblock
, sys
->nmolblock
);
1429 for (i
= sys
->nmolblock
-2; i
>= mb
; i
--)
1431 sys
->molblock
[i
+1] = sys
->molblock
[i
];
1433 sys
->molblock
[mb
].nmol
= mol
;
1434 sys
->molblock
[mb
+1].nmol
-= mol
;
1436 molb
= &sys
->molblock
[mb
];
1440 /* Split the molblock after this molecule */
1442 srenew(sys
->molblock
, sys
->nmolblock
);
1443 molb
= &sys
->molblock
[mb
];
1444 for (i
= sys
->nmolblock
-2; i
>= mb
; i
--)
1446 sys
->molblock
[i
+1] = sys
->molblock
[i
];
1448 sys
->molblock
[mb
].nmol
= 1;
1449 sys
->molblock
[mb
+1].nmol
-= 1;
1452 /* Add a moltype for the QMMM molecule */
1454 srenew(sys
->moltype
, sys
->nmoltype
);
1455 /* Copy the moltype struct */
1456 sys
->moltype
[sys
->nmoltype
-1] = sys
->moltype
[molb
->type
];
1457 /* Copy the exclusions to a new array, since this is the only
1458 * thing that needs to be modified for QMMM.
1460 copy_blocka(&sys
->moltype
[molb
->type
].excls
,
1461 &sys
->moltype
[sys
->nmoltype
-1].excls
);
1462 /* Set the molecule type for the QMMM molblock */
1463 molb
->type
= sys
->nmoltype
- 1;
1465 generate_qmexcl_moltype(&sys
->moltype
[molb
->type
], grpnr
, ir
);
1473 if (nr_mol_with_qm_atoms
> 1)
1475 /* generate a warning is there are QM atoms in different
1476 * topologies. In this case it is not possible at this stage to
1477 * mutualy exclude the non-bonded interactions via the
1478 * exclusions (AFAIK). Instead, the user is advised to use the
1479 * energy group exclusions in the mdp file
1482 "\nThe QM subsystem is divided over multiple topologies. "
1483 "The mutual non-bonded interactions cannot be excluded. "
1484 "There are two ways to achieve this:\n\n"
1485 "1) merge the topologies, such that the atoms of the QM "
1486 "subsystem are all present in one single topology file. "
1487 "In this case this warning will dissappear\n\n"
1488 "2) exclude the non-bonded interactions explicitly via the "
1489 "energygrp-excl option in the mdp file. if this is the case "
1490 "this warning may be ignored"