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39 * \brief This file defines the integrator for test particle insertion
41 * \author Berk Hess <hess@kth.se>
42 * \ingroup module_mdrun
53 #include "gromacs/commandline/filenm.h"
54 #include "gromacs/domdec/domdec.h"
55 #include "gromacs/ewald/pme.h"
56 #include "gromacs/fileio/confio.h"
57 #include "gromacs/fileio/trxio.h"
58 #include "gromacs/fileio/xvgr.h"
59 #include "gromacs/gmxlib/chargegroup.h"
60 #include "gromacs/gmxlib/conformation-utilities.h"
61 #include "gromacs/gmxlib/network.h"
62 #include "gromacs/gmxlib/nrnb.h"
63 #include "gromacs/math/units.h"
64 #include "gromacs/math/vec.h"
65 #include "gromacs/mdlib/constr.h"
66 #include "gromacs/mdlib/force.h"
67 #include "gromacs/mdlib/force_flags.h"
68 #include "gromacs/mdlib/mdatoms.h"
69 #include "gromacs/mdlib/mdebin.h"
70 #include "gromacs/mdlib/mdrun.h"
71 #include "gromacs/mdlib/ns.h"
72 #include "gromacs/mdlib/sim_util.h"
73 #include "gromacs/mdlib/tgroup.h"
74 #include "gromacs/mdlib/update.h"
75 #include "gromacs/mdlib/vsite.h"
76 #include "gromacs/mdtypes/commrec.h"
77 #include "gromacs/mdtypes/group.h"
78 #include "gromacs/mdtypes/inputrec.h"
79 #include "gromacs/mdtypes/md_enums.h"
80 #include "gromacs/mdtypes/state.h"
81 #include "gromacs/pbcutil/pbc.h"
82 #include "gromacs/random/threefry.h"
83 #include "gromacs/random/uniformrealdistribution.h"
84 #include "gromacs/timing/wallcycle.h"
85 #include "gromacs/timing/walltime_accounting.h"
86 #include "gromacs/topology/mtop_util.h"
87 #include "gromacs/trajectory/trajectoryframe.h"
88 #include "gromacs/utility/cstringutil.h"
89 #include "gromacs/utility/fatalerror.h"
90 #include "gromacs/utility/gmxassert.h"
91 #include "gromacs/utility/smalloc.h"
93 #include "integrator.h"
95 //! Global max algorithm
96 static void global_max(t_commrec
*cr
, int *n
)
100 snew(sum
, cr
->nnodes
);
101 sum
[cr
->nodeid
] = *n
;
102 gmx_sumi(cr
->nnodes
, sum
, cr
);
103 for (i
= 0; i
< cr
->nnodes
; i
++)
105 *n
= std::max(*n
, sum
[i
]);
111 //! Reallocate arrays.
112 static void realloc_bins(double **bin
, int *nbin
, int nbin_new
)
116 if (nbin_new
!= *nbin
)
118 srenew(*bin
, nbin_new
);
119 for (i
= *nbin
; i
< nbin_new
; i
++)
134 gmx_groups_t
*groups
;
135 gmx_enerdata_t
*enerd
;
136 PaddedRVecVector f
{};
137 real lambda
, t
, temp
, beta
, drmax
, epot
;
138 double embU
, sum_embU
, *sum_UgembU
, V
, V_all
, VembU_all
;
141 gmx_bool bDispCorr
, bCharge
, bRFExcl
, bNotLastFrame
, bStateChanged
, bNS
;
142 tensor force_vir
, shake_vir
, vir
, pres
;
143 int cg_tp
, a_tp0
, a_tp1
, ngid
, gid_tp
, nener
, e
;
145 rvec mu_tot
, x_init
, dx
, x_tp
;
147 gmx_int64_t frame_step_prev
, frame_step
;
148 gmx_int64_t nsteps
, stepblocksize
= 0, step
;
151 FILE *fp_tpi
= nullptr;
152 char *ptr
, *dump_pdb
, **leg
, str
[STRLEN
], str2
[STRLEN
];
153 double dbl
, dump_ener
;
155 int nat_cavity
= 0, d
;
156 real
*mass_cavity
= nullptr, mass_tot
;
158 double invbinw
, *bin
, refvolshift
, logV
, bUlogV
;
159 real prescorr
, enercorr
, dvdlcorr
;
160 gmx_bool bEnergyOutOfBounds
;
161 const char *tpid_leg
[2] = {"direct", "reweighted"};
162 auto mdatoms
= mdAtoms
->mdatoms();
164 GMX_UNUSED_VALUE(outputProvider
);
166 /* Since there is no upper limit to the insertion energies,
167 * we need to set an upper limit for the distribution output.
169 real bU_bin_limit
= 50;
170 real bU_logV_bin_limit
= bU_bin_limit
+ 10;
172 if (inputrec
->cutoff_scheme
== ecutsVERLET
)
174 gmx_fatal(FARGS
, "TPI does not work (yet) with the Verlet cut-off scheme");
179 top
= gmx_mtop_generate_local_top(top_global
, inputrec
->efep
!= efepNO
);
181 groups
= &top_global
->groups
;
183 bCavity
= (inputrec
->eI
== eiTPIC
);
186 ptr
= getenv("GMX_TPIC_MASSES");
193 /* Read (multiple) masses from env var GMX_TPIC_MASSES,
194 * The center of mass of the last atoms is then used for TPIC.
197 while (sscanf(ptr
, "%20lf%n", &dbl
, &i
) > 0)
199 srenew(mass_cavity
, nat_cavity
+1);
200 mass_cavity
[nat_cavity
] = dbl
;
201 fprintf(fplog
, "mass[%d] = %f\n",
202 nat_cavity
+1, mass_cavity
[nat_cavity
]);
208 gmx_fatal(FARGS
, "Found %d masses in GMX_TPIC_MASSES", nat_cavity
);
214 init_em(fplog,TPI,inputrec,&lambda,nrnb,mu_tot,
215 state_global->box,fr,mdatoms,top,cr,nfile,fnm,NULL,NULL);*/
216 /* We never need full pbc for TPI */
218 /* Determine the temperature for the Boltzmann weighting */
219 temp
= inputrec
->opts
.ref_t
[0];
222 for (i
= 1; (i
< inputrec
->opts
.ngtc
); i
++)
224 if (inputrec
->opts
.ref_t
[i
] != temp
)
226 fprintf(fplog
, "\nWARNING: The temperatures of the different temperature coupling groups are not identical\n\n");
227 fprintf(stderr
, "\nWARNING: The temperatures of the different temperature coupling groups are not identical\n\n");
231 "\n The temperature for test particle insertion is %.3f K\n\n",
234 beta
= 1.0/(BOLTZ
*temp
);
236 /* Number of insertions per frame */
237 nsteps
= inputrec
->nsteps
;
239 /* Use the same neighborlist with more insertions points
240 * in a sphere of radius drmax around the initial point
242 /* This should be a proper mdp parameter */
243 drmax
= inputrec
->rtpi
;
245 /* An environment variable can be set to dump all configurations
246 * to pdb with an insertion energy <= this value.
248 dump_pdb
= getenv("GMX_TPI_DUMP");
252 sscanf(dump_pdb
, "%20lf", &dump_ener
);
255 atoms2md(top_global
, inputrec
, -1, nullptr, top_global
->natoms
, mdAtoms
);
256 update_mdatoms(mdatoms
, inputrec
->fepvals
->init_lambda
);
259 init_enerdata(groups
->grps
[egcENER
].nr
, inputrec
->fepvals
->n_lambda
, enerd
);
260 /* We need to allocate one element extra, since we might use
261 * (unaligned) 4-wide SIMD loads to access rvec entries.
263 f
.resize(gmx::paddedRVecVectorSize(top_global
->natoms
));
265 /* Print to log file */
266 walltime_accounting_start(walltime_accounting
);
267 wallcycle_start(wcycle
, ewcRUN
);
268 print_start(fplog
, cr
, walltime_accounting
, "Test Particle Insertion");
270 /* The last charge group is the group to be inserted */
271 cg_tp
= top
->cgs
.nr
- 1;
272 a_tp0
= top
->cgs
.index
[cg_tp
];
273 a_tp1
= top
->cgs
.index
[cg_tp
+1];
276 fprintf(debug
, "TPI cg %d, atoms %d-%d\n", cg_tp
, a_tp0
, a_tp1
);
279 GMX_RELEASE_ASSERT(inputrec
->rcoulomb
<= inputrec
->rlist
&& inputrec
->rvdw
<= inputrec
->rlist
, "Twin-range interactions are not supported with TPI");
281 snew(x_mol
, a_tp1
-a_tp0
);
283 bDispCorr
= (inputrec
->eDispCorr
!= edispcNO
);
285 for (i
= a_tp0
; i
< a_tp1
; i
++)
287 /* Copy the coordinates of the molecule to be insterted */
288 copy_rvec(state_global
->x
[i
], x_mol
[i
-a_tp0
]);
289 /* Check if we need to print electrostatic energies */
290 bCharge
|= (mdatoms
->chargeA
[i
] != 0 ||
291 (mdatoms
->chargeB
&& mdatoms
->chargeB
[i
] != 0));
293 bRFExcl
= (bCharge
&& EEL_RF(fr
->ic
->eeltype
));
295 calc_cgcm(fplog
, cg_tp
, cg_tp
+1, &(top
->cgs
), as_rvec_array(state_global
->x
.data()), fr
->cg_cm
);
298 if (norm(fr
->cg_cm
[cg_tp
]) > 0.5*inputrec
->rlist
&& fplog
)
300 fprintf(fplog
, "WARNING: Your TPI molecule is not centered at 0,0,0\n");
301 fprintf(stderr
, "WARNING: Your TPI molecule is not centered at 0,0,0\n");
306 /* Center the molecule to be inserted at zero */
307 for (i
= 0; i
< a_tp1
-a_tp0
; i
++)
309 rvec_dec(x_mol
[i
], fr
->cg_cm
[cg_tp
]);
315 fprintf(fplog
, "\nWill insert %d atoms %s partial charges\n",
316 a_tp1
-a_tp0
, bCharge
? "with" : "without");
318 fprintf(fplog
, "\nWill insert %d times in each frame of %s\n",
319 (int)nsteps
, opt2fn("-rerun", nfile
, fnm
));
324 if (inputrec
->nstlist
> 1)
326 if (drmax
== 0 && a_tp1
-a_tp0
== 1)
328 gmx_fatal(FARGS
, "Re-using the neighborlist %d times for insertions of a single atom in a sphere of radius %f does not make sense", inputrec
->nstlist
, drmax
);
332 fprintf(fplog
, "Will use the same neighborlist for %d insertions in a sphere of radius %f\n", inputrec
->nstlist
, drmax
);
340 fprintf(fplog
, "Will insert randomly in a sphere of radius %f around the center of the cavity\n", drmax
);
344 ngid
= groups
->grps
[egcENER
].nr
;
345 gid_tp
= GET_CGINFO_GID(fr
->cginfo
[cg_tp
]);
358 if (EEL_FULL(fr
->ic
->eeltype
))
363 snew(sum_UgembU
, nener
);
365 /* Copy the random seed set by the user */
366 seed
= inputrec
->ld_seed
;
368 gmx::ThreeFry2x64
<16> rng(seed
, gmx::RandomDomain::TestParticleInsertion
); // 16 bits internal counter => 2^16 * 2 = 131072 values per stream
369 gmx::UniformRealDistribution
<real
> dist
;
373 fp_tpi
= xvgropen(opt2fn("-tpi", nfile
, fnm
),
374 "TPI energies", "Time (ps)",
375 "(kJ mol\\S-1\\N) / (nm\\S3\\N)", oenv
);
376 xvgr_subtitle(fp_tpi
, "f. are averages over one frame", oenv
);
379 sprintf(str
, "-kT log(<Ve\\S-\\betaU\\N>/<V>)");
380 leg
[e
++] = gmx_strdup(str
);
381 sprintf(str
, "f. -kT log<e\\S-\\betaU\\N>");
382 leg
[e
++] = gmx_strdup(str
);
383 sprintf(str
, "f. <e\\S-\\betaU\\N>");
384 leg
[e
++] = gmx_strdup(str
);
385 sprintf(str
, "f. V");
386 leg
[e
++] = gmx_strdup(str
);
387 sprintf(str
, "f. <Ue\\S-\\betaU\\N>");
388 leg
[e
++] = gmx_strdup(str
);
389 for (i
= 0; i
< ngid
; i
++)
391 sprintf(str
, "f. <U\\sVdW %s\\Ne\\S-\\betaU\\N>",
392 *(groups
->grpname
[groups
->grps
[egcENER
].nm_ind
[i
]]));
393 leg
[e
++] = gmx_strdup(str
);
397 sprintf(str
, "f. <U\\sdisp c\\Ne\\S-\\betaU\\N>");
398 leg
[e
++] = gmx_strdup(str
);
402 for (i
= 0; i
< ngid
; i
++)
404 sprintf(str
, "f. <U\\sCoul %s\\Ne\\S-\\betaU\\N>",
405 *(groups
->grpname
[groups
->grps
[egcENER
].nm_ind
[i
]]));
406 leg
[e
++] = gmx_strdup(str
);
410 sprintf(str
, "f. <U\\sRF excl\\Ne\\S-\\betaU\\N>");
411 leg
[e
++] = gmx_strdup(str
);
413 if (EEL_FULL(fr
->ic
->eeltype
))
415 sprintf(str
, "f. <U\\sCoul recip\\Ne\\S-\\betaU\\N>");
416 leg
[e
++] = gmx_strdup(str
);
419 xvgr_legend(fp_tpi
, 4+nener
, (const char**)leg
, oenv
);
420 for (i
= 0; i
< 4+nener
; i
++)
434 /* Avoid frame step numbers <= -1 */
435 frame_step_prev
= -1;
437 bNotLastFrame
= read_first_frame(oenv
, &status
, opt2fn("-rerun", nfile
, fnm
),
438 &rerun_fr
, TRX_NEED_X
);
441 if (rerun_fr
.natoms
- (bCavity
? nat_cavity
: 0) !=
442 mdatoms
->nr
- (a_tp1
- a_tp0
))
444 gmx_fatal(FARGS
, "Number of atoms in trajectory (%d)%s "
445 "is not equal the number in the run input file (%d) "
446 "minus the number of atoms to insert (%d)\n",
447 rerun_fr
.natoms
, bCavity
? " minus one" : "",
448 mdatoms
->nr
, a_tp1
-a_tp0
);
451 refvolshift
= log(det(rerun_fr
.box
));
453 switch (inputrec
->eI
)
456 stepblocksize
= inputrec
->nstlist
;
462 gmx_fatal(FARGS
, "Unknown integrator %s", ei_names
[inputrec
->eI
]);
465 while (bNotLastFrame
)
467 frame_step
= rerun_fr
.step
;
468 if (frame_step
<= frame_step_prev
)
470 /* We don't have step number in the trajectory file,
471 * or we have constant or decreasing step numbers.
472 * Ensure we have increasing step numbers, since we use
473 * the step numbers as a counter for random numbers.
475 frame_step
= frame_step_prev
+ 1;
477 frame_step_prev
= frame_step
;
479 lambda
= rerun_fr
.lambda
;
483 for (e
= 0; e
< nener
; e
++)
488 /* Copy the coordinates from the input trajectory */
489 for (i
= 0; i
< rerun_fr
.natoms
; i
++)
491 copy_rvec(rerun_fr
.x
[i
], state_global
->x
[i
]);
493 copy_mat(rerun_fr
.box
, state_global
->box
);
495 V
= det(state_global
->box
);
498 bStateChanged
= TRUE
;
501 step
= cr
->nodeid
*stepblocksize
;
502 while (step
< nsteps
)
504 /* Restart random engine using the frame and insertion step
506 * Note that we need to draw several random values per iteration,
507 * but by using the internal subcounter functionality of ThreeFry2x64
508 * we can draw 131072 unique 64-bit values before exhausting
509 * the stream. This is a huge margin, and if something still goes
510 * wrong you will get an exception when the stream is exhausted.
512 rng
.restart(frame_step
, step
);
513 dist
.reset(); // erase any memory in the distribution
517 /* Random insertion in the whole volume */
518 bNS
= (step
% inputrec
->nstlist
== 0);
521 /* Generate a random position in the box */
522 for (d
= 0; d
< DIM
; d
++)
524 x_init
[d
] = dist(rng
)*state_global
->box
[d
][d
];
528 if (inputrec
->nstlist
== 1)
530 copy_rvec(x_init
, x_tp
);
534 /* Generate coordinates within |dx|=drmax of x_init */
537 for (d
= 0; d
< DIM
; d
++)
539 dx
[d
] = (2*dist(rng
) - 1)*drmax
;
542 while (norm2(dx
) > drmax
*drmax
);
543 rvec_add(x_init
, dx
, x_tp
);
548 /* Random insertion around a cavity location
549 * given by the last coordinate of the trajectory.
555 /* Copy the location of the cavity */
556 copy_rvec(rerun_fr
.x
[rerun_fr
.natoms
-1], x_init
);
560 /* Determine the center of mass of the last molecule */
563 for (i
= 0; i
< nat_cavity
; i
++)
565 for (d
= 0; d
< DIM
; d
++)
568 mass_cavity
[i
]*rerun_fr
.x
[rerun_fr
.natoms
-nat_cavity
+i
][d
];
570 mass_tot
+= mass_cavity
[i
];
572 for (d
= 0; d
< DIM
; d
++)
574 x_init
[d
] /= mass_tot
;
578 /* Generate coordinates within |dx|=drmax of x_init */
581 for (d
= 0; d
< DIM
; d
++)
583 dx
[d
] = (2*dist(rng
) - 1)*drmax
;
586 while (norm2(dx
) > drmax
*drmax
);
587 rvec_add(x_init
, dx
, x_tp
);
590 if (a_tp1
- a_tp0
== 1)
592 /* Insert a single atom, just copy the insertion location */
593 copy_rvec(x_tp
, state_global
->x
[a_tp0
]);
597 /* Copy the coordinates from the top file */
598 for (i
= a_tp0
; i
< a_tp1
; i
++)
600 copy_rvec(x_mol
[i
-a_tp0
], state_global
->x
[i
]);
602 /* Rotate the molecule randomly */
603 real angleX
= 2*M_PI
*dist(rng
);
604 real angleY
= 2*M_PI
*dist(rng
);
605 real angleZ
= 2*M_PI
*dist(rng
);
606 rotate_conf(a_tp1
-a_tp0
, as_rvec_array(state_global
->x
.data())+a_tp0
, nullptr,
607 angleX
, angleY
, angleZ
);
608 /* Shift to the insertion location */
609 for (i
= a_tp0
; i
< a_tp1
; i
++)
611 rvec_inc(state_global
->x
[i
], x_tp
);
615 /* Clear some matrix variables */
616 clear_mat(force_vir
);
617 clear_mat(shake_vir
);
621 /* Set the charge group center of mass of the test particle */
622 copy_rvec(x_init
, fr
->cg_cm
[top
->cgs
.nr
-1]);
624 /* Calc energy (no forces) on new positions.
625 * Since we only need the intermolecular energy
626 * and the RF exclusion terms of the inserted molecule occur
627 * within a single charge group we can pass NULL for the graph.
628 * This also avoids shifts that would move charge groups
630 /* Make do_force do a single node force calculation */
632 do_force(fplog
, cr
, ms
, inputrec
, nullptr,
633 step
, nrnb
, wcycle
, top
, &top_global
->groups
,
634 state_global
->box
, state_global
->x
, &state_global
->hist
,
635 f
, force_vir
, mdatoms
, enerd
, fcd
,
636 state_global
->lambda
,
637 nullptr, fr
, nullptr, mu_tot
, t
, nullptr,
638 GMX_FORCE_NONBONDED
| GMX_FORCE_ENERGY
|
639 (bNS
? GMX_FORCE_DYNAMICBOX
| GMX_FORCE_NS
: 0) |
640 (bStateChanged
? GMX_FORCE_STATECHANGED
: 0),
641 DdOpenBalanceRegionBeforeForceComputation::no
,
642 DdCloseBalanceRegionAfterForceComputation::no
);
644 bStateChanged
= FALSE
;
647 /* Calculate long range corrections to pressure and energy */
648 calc_dispcorr(inputrec
, fr
, state_global
->box
,
649 lambda
, pres
, vir
, &prescorr
, &enercorr
, &dvdlcorr
);
650 /* figure out how to rearrange the next 4 lines MRS 8/4/2009 */
651 enerd
->term
[F_DISPCORR
] = enercorr
;
652 enerd
->term
[F_EPOT
] += enercorr
;
653 enerd
->term
[F_PRES
] += prescorr
;
654 enerd
->term
[F_DVDL_VDW
] += dvdlcorr
;
656 epot
= enerd
->term
[F_EPOT
];
657 bEnergyOutOfBounds
= FALSE
;
659 /* If the compiler doesn't optimize this check away
660 * we catch the NAN energies.
661 * The epot>GMX_REAL_MAX check catches inf values,
662 * which should nicely result in embU=0 through the exp below,
663 * but it does not hurt to check anyhow.
665 /* Non-bonded Interaction usually diverge at r=0.
666 * With tabulated interaction functions the first few entries
667 * should be capped in a consistent fashion between
668 * repulsion, dispersion and Coulomb to avoid accidental
669 * negative values in the total energy.
670 * The table generation code in tables.c does this.
671 * With user tbales the user should take care of this.
673 if (epot
!= epot
|| epot
> GMX_REAL_MAX
)
675 bEnergyOutOfBounds
= TRUE
;
677 if (bEnergyOutOfBounds
)
681 fprintf(debug
, "\n time %.3f, step %d: non-finite energy %f, using exp(-bU)=0\n", t
, (int)step
, epot
);
687 // Exponent argument is fine in SP range, but output can be in DP range
688 embU
= exp(static_cast<double>(-beta
*epot
));
690 /* Determine the weighted energy contributions of each energy group */
692 sum_UgembU
[e
++] += epot
*embU
;
695 for (i
= 0; i
< ngid
; i
++)
698 enerd
->grpp
.ener
[egBHAMSR
][GID(i
, gid_tp
, ngid
)]*embU
;
703 for (i
= 0; i
< ngid
; i
++)
706 enerd
->grpp
.ener
[egLJSR
][GID(i
, gid_tp
, ngid
)]*embU
;
711 sum_UgembU
[e
++] += enerd
->term
[F_DISPCORR
]*embU
;
715 for (i
= 0; i
< ngid
; i
++)
717 sum_UgembU
[e
++] += enerd
->grpp
.ener
[egCOULSR
][GID(i
, gid_tp
, ngid
)] * embU
;
721 sum_UgembU
[e
++] += enerd
->term
[F_RF_EXCL
]*embU
;
723 if (EEL_FULL(fr
->ic
->eeltype
))
725 sum_UgembU
[e
++] += enerd
->term
[F_COUL_RECIP
]*embU
;
730 if (embU
== 0 || beta
*epot
> bU_bin_limit
)
736 i
= (int)((bU_logV_bin_limit
737 - (beta
*epot
- logV
+ refvolshift
))*invbinw
745 realloc_bins(&bin
, &nbin
, i
+10);
752 fprintf(debug
, "TPI %7d %12.5e %12.5f %12.5f %12.5f\n",
753 (int)step
, epot
, x_tp
[XX
], x_tp
[YY
], x_tp
[ZZ
]);
756 if (dump_pdb
&& epot
<= dump_ener
)
758 sprintf(str
, "t%g_step%d.pdb", t
, (int)step
);
759 sprintf(str2
, "t: %f step %d ener: %f", t
, (int)step
, epot
);
760 write_sto_conf_mtop(str
, str2
, top_global
, as_rvec_array(state_global
->x
.data()), as_rvec_array(state_global
->v
.data()),
761 inputrec
->ePBC
, state_global
->box
);
765 if ((step
/stepblocksize
) % cr
->nnodes
!= cr
->nodeid
)
767 /* Skip all steps assigned to the other MPI ranks */
768 step
+= (cr
->nnodes
- 1)*stepblocksize
;
774 /* When running in parallel sum the energies over the processes */
775 gmx_sumd(1, &sum_embU
, cr
);
776 gmx_sumd(nener
, sum_UgembU
, cr
);
781 VembU_all
+= V
*sum_embU
/nsteps
;
785 if (mdrunOptions
.verbose
|| frame
%10 == 0 || frame
< 10)
787 fprintf(stderr
, "mu %10.3e <mu> %10.3e\n",
788 -log(sum_embU
/nsteps
)/beta
, -log(VembU_all
/V_all
)/beta
);
791 fprintf(fp_tpi
, "%10.3f %12.5e %12.5e %12.5e %12.5e",
793 VembU_all
== 0 ? 20/beta
: -log(VembU_all
/V_all
)/beta
,
794 sum_embU
== 0 ? 20/beta
: -log(sum_embU
/nsteps
)/beta
,
796 for (e
= 0; e
< nener
; e
++)
798 fprintf(fp_tpi
, " %12.5e", sum_UgembU
[e
]/nsteps
);
800 fprintf(fp_tpi
, "\n");
804 bNotLastFrame
= read_next_frame(oenv
, status
, &rerun_fr
);
805 } /* End of the loop */
806 walltime_accounting_end(walltime_accounting
);
810 if (fp_tpi
!= nullptr)
815 if (fplog
!= nullptr)
817 fprintf(fplog
, "\n");
818 fprintf(fplog
, " <V> = %12.5e nm^3\n", V_all
/frame
);
819 const double mu
= -log(VembU_all
/V_all
)/beta
;
820 fprintf(fplog
, " <mu> = %12.5e kJ/mol\n", mu
);
822 if (!std::isfinite(mu
))
824 fprintf(fplog
, "\nThe computed chemical potential is not finite - consider increasing the number of steps and/or the number of frames to insert into.\n");
828 /* Write the Boltzmann factor histogram */
831 /* When running in parallel sum the bins over the processes */
834 realloc_bins(&bin
, &nbin
, i
);
835 gmx_sumd(nbin
, bin
, cr
);
839 fp_tpi
= xvgropen(opt2fn("-tpid", nfile
, fnm
),
840 "TPI energy distribution",
841 "\\betaU - log(V/<V>)", "count", oenv
);
842 sprintf(str
, "number \\betaU > %g: %9.3e", bU_bin_limit
, bin
[0]);
843 xvgr_subtitle(fp_tpi
, str
, oenv
);
844 xvgr_legend(fp_tpi
, 2, (const char **)tpid_leg
, oenv
);
845 for (i
= nbin
-1; i
> 0; i
--)
847 bUlogV
= -i
/invbinw
+ bU_logV_bin_limit
- refvolshift
+ log(V_all
/frame
);
848 fprintf(fp_tpi
, "%6.2f %10d %12.5e\n",
851 bin
[i
]*exp(-bUlogV
)*V_all
/VembU_all
);
859 walltime_accounting_set_nsteps_done(walltime_accounting
, frame
*inputrec
->nsteps
);