59 |
|
#include "nonbonded/NonBondedInteraction.hpp" |
60 |
|
#include "parallel/ForceMatrixDecomposition.hpp" |
61 |
|
|
62 |
+ |
#include <cstdio> |
63 |
+ |
#include <iostream> |
64 |
+ |
#include <iomanip> |
65 |
+ |
|
66 |
|
using namespace std; |
67 |
|
namespace OpenMD { |
68 |
|
|
69 |
|
ForceManager::ForceManager(SimInfo * info) : info_(info) { |
70 |
|
forceField_ = info_->getForceField(); |
71 |
< |
fDecomp_ = new ForceMatrixDecomposition(info_); |
71 |
> |
interactionMan_ = new InteractionManager(); |
72 |
> |
fDecomp_ = new ForceMatrixDecomposition(info_, interactionMan_); |
73 |
|
} |
74 |
|
|
75 |
|
/** |
76 |
|
* setupCutoffs |
77 |
|
* |
78 |
< |
* Sets the values of cutoffRadius, cutoffMethod, and cutoffPolicy |
78 |
> |
* Sets the values of cutoffRadius, switchingRadius, cutoffMethod, |
79 |
> |
* and cutoffPolicy |
80 |
|
* |
81 |
|
* cutoffRadius : realType |
82 |
|
* If the cutoffRadius was explicitly set, use that value. |
86 |
|
* simulation for suggested cutoff values (e.g. 2.5 * sigma). |
87 |
|
* Use the maximum suggested value that was found. |
88 |
|
* |
89 |
< |
* cutoffMethod : (one of HARD, SWITCHED, SHIFTED_FORCE, SHIFTED_POTENTIAL) |
89 |
> |
* cutoffMethod : (one of HARD, SWITCHED, SHIFTED_FORCE, |
90 |
> |
* or SHIFTED_POTENTIAL) |
91 |
|
* If cutoffMethod was explicitly set, use that choice. |
92 |
|
* If cutoffMethod was not explicitly set, use SHIFTED_FORCE |
93 |
|
* |
94 |
|
* cutoffPolicy : (one of MIX, MAX, TRADITIONAL) |
95 |
|
* If cutoffPolicy was explicitly set, use that choice. |
96 |
|
* If cutoffPolicy was not explicitly set, use TRADITIONAL |
97 |
+ |
* |
98 |
+ |
* switchingRadius : realType |
99 |
+ |
* If the cutoffMethod was set to SWITCHED: |
100 |
+ |
* If the switchingRadius was explicitly set, use that value |
101 |
+ |
* (but do a sanity check first). |
102 |
+ |
* If the switchingRadius was not explicitly set: use 0.85 * |
103 |
+ |
* cutoffRadius_ |
104 |
+ |
* If the cutoffMethod was not set to SWITCHED: |
105 |
+ |
* Set switchingRadius equal to cutoffRadius for safety. |
106 |
|
*/ |
107 |
|
void ForceManager::setupCutoffs() { |
108 |
|
|
137 |
|
painCave.isFatal = 0; |
138 |
|
painCave.severity = OPENMD_INFO; |
139 |
|
simError(); |
140 |
< |
} |
140 |
> |
} |
141 |
|
} |
142 |
|
|
143 |
+ |
fDecomp_->setUserCutoff(rCut_); |
144 |
+ |
interactionMan_->setCutoffRadius(rCut_); |
145 |
+ |
|
146 |
|
map<string, CutoffMethod> stringToCutoffMethod; |
147 |
|
stringToCutoffMethod["HARD"] = HARD; |
148 |
|
stringToCutoffMethod["SWITCHED"] = SWITCHED; |
213 |
|
simError(); |
214 |
|
cutoffPolicy_ = TRADITIONAL; |
215 |
|
} |
197 |
– |
} |
216 |
|
|
217 |
< |
/** |
218 |
< |
* setupSwitching |
219 |
< |
* |
220 |
< |
* Sets the values of switchingRadius and |
221 |
< |
* If the switchingRadius was explicitly set, use that value (but check it) |
222 |
< |
* If the switchingRadius was not explicitly set: use 0.85 * cutoffRadius_ |
223 |
< |
*/ |
224 |
< |
void ForceManager::setupSwitching() { |
225 |
< |
Globals* simParams_ = info_->getSimParams(); |
226 |
< |
|
227 |
< |
if (simParams_->haveSwitchingRadius()) { |
228 |
< |
rSwitch_ = simParams_->getSwitchingRadius(); |
229 |
< |
if (rSwitch_ > rCut_) { |
217 |
> |
fDecomp_->setCutoffPolicy(cutoffPolicy_); |
218 |
> |
|
219 |
> |
// create the switching function object: |
220 |
> |
|
221 |
> |
switcher_ = new SwitchingFunction(); |
222 |
> |
|
223 |
> |
if (cutoffMethod_ == SWITCHED) { |
224 |
> |
if (simParams_->haveSwitchingRadius()) { |
225 |
> |
rSwitch_ = simParams_->getSwitchingRadius(); |
226 |
> |
if (rSwitch_ > rCut_) { |
227 |
> |
sprintf(painCave.errMsg, |
228 |
> |
"ForceManager::setupCutoffs: switchingRadius (%f) is larger " |
229 |
> |
"than the cutoffRadius(%f)\n", rSwitch_, rCut_); |
230 |
> |
painCave.isFatal = 1; |
231 |
> |
painCave.severity = OPENMD_ERROR; |
232 |
> |
simError(); |
233 |
> |
} |
234 |
> |
} else { |
235 |
> |
rSwitch_ = 0.85 * rCut_; |
236 |
|
sprintf(painCave.errMsg, |
237 |
< |
"ForceManager::setupSwitching: switchingRadius (%f) is larger than cutoffRadius(%f)\n", |
238 |
< |
rSwitch_, rCut_); |
239 |
< |
painCave.isFatal = 1; |
240 |
< |
painCave.severity = OPENMD_ERROR; |
237 |
> |
"ForceManager::setupCutoffs: No value was set for the switchingRadius.\n" |
238 |
> |
"\tOpenMD will use a default value of 85 percent of the cutoffRadius.\n" |
239 |
> |
"\tswitchingRadius = %f. for this simulation\n", rSwitch_); |
240 |
> |
painCave.isFatal = 0; |
241 |
> |
painCave.severity = OPENMD_WARNING; |
242 |
|
simError(); |
243 |
|
} |
244 |
< |
} else { |
245 |
< |
rSwitch_ = 0.85 * rCut_; |
246 |
< |
sprintf(painCave.errMsg, |
247 |
< |
"ForceManager::setupSwitching: No value was set for the switchingRadius.\n" |
248 |
< |
"\tOpenMD will use a default value of 85 percent of the cutoffRadius.\n" |
249 |
< |
"\tswitchingRadius = %f. for this simulation\n", rSwitch_); |
250 |
< |
painCave.isFatal = 0; |
251 |
< |
painCave.severity = OPENMD_WARNING; |
252 |
< |
simError(); |
253 |
< |
} |
244 |
> |
} else { |
245 |
> |
if (simParams_->haveSwitchingRadius()) { |
246 |
> |
map<string, CutoffMethod>::const_iterator it; |
247 |
> |
string theMeth; |
248 |
> |
for (it = stringToCutoffMethod.begin(); |
249 |
> |
it != stringToCutoffMethod.end(); ++it) { |
250 |
> |
if (it->second == cutoffMethod_) { |
251 |
> |
theMeth = it->first; |
252 |
> |
break; |
253 |
> |
} |
254 |
> |
} |
255 |
> |
sprintf(painCave.errMsg, |
256 |
> |
"ForceManager::setupCutoffs: the cutoffMethod (%s)\n" |
257 |
> |
"\tis not set to SWITCHED, so switchingRadius value\n" |
258 |
> |
"\twill be ignored for this simulation\n", theMeth.c_str()); |
259 |
> |
painCave.isFatal = 0; |
260 |
> |
painCave.severity = OPENMD_WARNING; |
261 |
> |
simError(); |
262 |
> |
} |
263 |
> |
|
264 |
> |
rSwitch_ = rCut_; |
265 |
> |
} |
266 |
|
|
267 |
+ |
// Default to cubic switching function. |
268 |
+ |
sft_ = cubic; |
269 |
|
if (simParams_->haveSwitchingFunctionType()) { |
270 |
|
string funcType = simParams_->getSwitchingFunctionType(); |
271 |
|
toUpper(funcType); |
289 |
|
} |
290 |
|
switcher_->setSwitchType(sft_); |
291 |
|
switcher_->setSwitch(rSwitch_, rCut_); |
292 |
+ |
interactionMan_->setSwitchingRadius(rSwitch_); |
293 |
|
} |
294 |
|
|
295 |
|
void ForceManager::initialize() { |
296 |
|
|
297 |
|
if (!info_->isTopologyDone()) { |
298 |
+ |
|
299 |
|
info_->update(); |
300 |
|
interactionMan_->setSimInfo(info_); |
301 |
|
interactionMan_->initialize(); |
303 |
|
// We want to delay the cutoffs until after the interaction |
304 |
|
// manager has set up the atom-atom interactions so that we can |
305 |
|
// query them for suggested cutoff values |
265 |
– |
|
306 |
|
setupCutoffs(); |
267 |
– |
setupSwitching(); |
307 |
|
|
308 |
|
info_->prepareTopology(); |
309 |
|
} |
310 |
|
|
311 |
|
ForceFieldOptions& fopts = forceField_->getForceFieldOptions(); |
312 |
|
|
313 |
< |
// Force fields can set options on how to scale van der Waals and electrostatic |
314 |
< |
// interactions for atoms connected via bonds, bends and torsions |
315 |
< |
// in this case the topological distance between atoms is: |
313 |
> |
// Force fields can set options on how to scale van der Waals and |
314 |
> |
// electrostatic interactions for atoms connected via bonds, bends |
315 |
> |
// and torsions in this case the topological distance between |
316 |
> |
// atoms is: |
317 |
|
// 0 = topologically unconnected |
318 |
|
// 1 = bonded together |
319 |
|
// 2 = connected via a bend |
365 |
|
|
366 |
|
for (mol = info_->beginMolecule(mi); mol != NULL; |
367 |
|
mol = info_->nextMolecule(mi)) { |
368 |
< |
for(atom = mol->beginAtom(ai); atom != NULL; atom = mol->nextAtom(ai)) { |
368 |
> |
for(atom = mol->beginAtom(ai); atom != NULL; |
369 |
> |
atom = mol->nextAtom(ai)) { |
370 |
|
atom->zeroForcesAndTorques(); |
371 |
|
} |
372 |
< |
|
372 |
> |
|
373 |
|
//change the positions of atoms which belong to the rigidbodies |
374 |
|
for (rb = mol->beginRigidBody(rbIter); rb != NULL; |
375 |
|
rb = mol->nextRigidBody(rbIter)) { |
376 |
|
rb->zeroForcesAndTorques(); |
377 |
|
} |
378 |
< |
|
378 |
> |
|
379 |
|
if(info_->getNGlobalCutoffGroups() != info_->getNGlobalAtoms()){ |
380 |
|
for(cg = mol->beginCutoffGroup(ci); cg != NULL; |
381 |
|
cg = mol->nextCutoffGroup(ci)) { |
384 |
|
} |
385 |
|
} |
386 |
|
} |
387 |
< |
|
387 |
> |
|
388 |
|
// Zero out the stress tensor |
389 |
|
tau *= 0.0; |
390 |
|
|
438 |
|
dataSet.prev.angle = dataSet.curr.angle = angle; |
439 |
|
dataSet.prev.potential = dataSet.curr.potential = currBendPot; |
440 |
|
dataSet.deltaV = 0.0; |
441 |
< |
bendDataSets.insert(map<Bend*, BendDataSet>::value_type(bend, dataSet)); |
441 |
> |
bendDataSets.insert(map<Bend*, BendDataSet>::value_type(bend, |
442 |
> |
dataSet)); |
443 |
|
}else { |
444 |
|
i->second.prev.angle = i->second.curr.angle; |
445 |
|
i->second.prev.potential = i->second.curr.potential; |
510 |
|
|
511 |
|
void ForceManager::longRangeInteractions() { |
512 |
|
|
471 |
– |
// some of this initial stuff will go away: |
513 |
|
Snapshot* curSnapshot = info_->getSnapshotManager()->getCurrentSnapshot(); |
514 |
|
DataStorage* config = &(curSnapshot->atomData); |
515 |
|
DataStorage* cgConfig = &(curSnapshot->cgData); |
475 |
– |
RealType* frc = config->getArrayPointer(DataStorage::dslForce); |
476 |
– |
RealType* pos = config->getArrayPointer(DataStorage::dslPosition); |
477 |
– |
RealType* trq = config->getArrayPointer(DataStorage::dslTorque); |
478 |
– |
RealType* A = config->getArrayPointer(DataStorage::dslAmat); |
479 |
– |
RealType* electroFrame = config->getArrayPointer(DataStorage::dslElectroFrame); |
480 |
– |
RealType* particlePot = config->getArrayPointer(DataStorage::dslParticlePot); |
481 |
– |
RealType* rc; |
516 |
|
|
517 |
< |
if(info_->getNGlobalCutoffGroups() != info_->getNGlobalAtoms()){ |
518 |
< |
rc = cgConfig->getArrayPointer(DataStorage::dslPosition); |
517 |
> |
//calculate the center of mass of cutoff group |
518 |
> |
|
519 |
> |
SimInfo::MoleculeIterator mi; |
520 |
> |
Molecule* mol; |
521 |
> |
Molecule::CutoffGroupIterator ci; |
522 |
> |
CutoffGroup* cg; |
523 |
> |
|
524 |
> |
if(info_->getNCutoffGroups() > 0){ |
525 |
> |
for (mol = info_->beginMolecule(mi); mol != NULL; |
526 |
> |
mol = info_->nextMolecule(mi)) { |
527 |
> |
for(cg = mol->beginCutoffGroup(ci); cg != NULL; |
528 |
> |
cg = mol->nextCutoffGroup(ci)) { |
529 |
> |
cg->updateCOM(); |
530 |
> |
} |
531 |
> |
} |
532 |
|
} else { |
533 |
|
// center of mass of the group is the same as position of the atom |
534 |
|
// if cutoff group does not exist |
535 |
< |
rc = pos; |
535 |
> |
cgConfig->position = config->position; |
536 |
|
} |
537 |
< |
|
491 |
< |
// new stuff starts here: |
537 |
> |
|
538 |
|
fDecomp_->zeroWorkArrays(); |
539 |
|
fDecomp_->distributeData(); |
540 |
< |
|
541 |
< |
int cg1, cg2, atom1, atom2; |
542 |
< |
Vector3d d_grp, dag; |
543 |
< |
RealType rgrpsq, rgrp; |
540 |
> |
|
541 |
> |
int cg1, cg2, atom1, atom2, topoDist; |
542 |
> |
Vector3d d_grp, dag, d; |
543 |
> |
RealType rgrpsq, rgrp, r2, r; |
544 |
> |
RealType electroMult, vdwMult; |
545 |
|
RealType vij; |
546 |
< |
Vector3d fij, fg; |
546 |
> |
Vector3d fij, fg, f1; |
547 |
|
tuple3<RealType, RealType, RealType> cuts; |
548 |
|
RealType rCutSq; |
549 |
|
bool in_switching_region; |
552 |
|
InteractionData idat; |
553 |
|
SelfData sdat; |
554 |
|
RealType mf; |
508 |
– |
potVec pot(0.0); |
509 |
– |
potVec longRangePotential(0.0); |
555 |
|
RealType lrPot; |
556 |
+ |
RealType vpair; |
557 |
+ |
potVec longRangePotential(0.0); |
558 |
+ |
potVec workPot(0.0); |
559 |
|
|
560 |
|
int loopStart, loopEnd; |
561 |
|
|
562 |
+ |
idat.vdwMult = &vdwMult; |
563 |
+ |
idat.electroMult = &electroMult; |
564 |
+ |
idat.pot = &workPot; |
565 |
+ |
sdat.pot = fDecomp_->getEmbeddingPotential(); |
566 |
+ |
idat.vpair = &vpair; |
567 |
+ |
idat.f1 = &f1; |
568 |
+ |
idat.sw = &sw; |
569 |
+ |
idat.shiftedPot = (cutoffMethod_ == SHIFTED_POTENTIAL) ? true : false; |
570 |
+ |
idat.shiftedForce = (cutoffMethod_ == SHIFTED_FORCE) ? true : false; |
571 |
+ |
|
572 |
|
loopEnd = PAIR_LOOP; |
573 |
|
if (info_->requiresPrepair() ) { |
574 |
|
loopStart = PREPAIR_LOOP; |
575 |
|
} else { |
576 |
|
loopStart = PAIR_LOOP; |
577 |
|
} |
578 |
< |
|
579 |
< |
for (int iLoop = loopStart; iLoop < loopEnd; iLoop++) { |
580 |
< |
|
578 |
> |
|
579 |
> |
for (int iLoop = loopStart; iLoop <= loopEnd; iLoop++) { |
580 |
> |
|
581 |
|
if (iLoop == loopStart) { |
582 |
|
bool update_nlist = fDecomp_->checkNeighborList(); |
583 |
|
if (update_nlist) |
584 |
|
neighborList = fDecomp_->buildNeighborList(); |
585 |
< |
} |
585 |
> |
} |
586 |
|
|
587 |
|
for (vector<pair<int, int> >::iterator it = neighborList.begin(); |
588 |
|
it != neighborList.end(); ++it) { |
589 |
< |
|
589 |
> |
|
590 |
|
cg1 = (*it).first; |
591 |
|
cg2 = (*it).second; |
592 |
|
|
599 |
|
rCutSq = cuts.second; |
600 |
|
|
601 |
|
if (rgrpsq < rCutSq) { |
602 |
< |
*(idat.rcut) = cuts.first; |
602 |
> |
idat.rcut = &cuts.first; |
603 |
|
if (iLoop == PAIR_LOOP) { |
604 |
< |
vij *= 0.0; |
604 |
> |
vij = 0.0; |
605 |
|
fij = V3Zero; |
606 |
|
} |
607 |
|
|
608 |
< |
in_switching_region = switcher_->getSwitch(rgrpsq, *(idat.sw), dswdr, |
608 |
> |
in_switching_region = switcher_->getSwitch(rgrpsq, sw, dswdr, |
609 |
|
rgrp); |
610 |
|
|
611 |
|
atomListRow = fDecomp_->getAtomsInGroupRow(cg1); |
618 |
|
for (vector<int>::iterator jb = atomListColumn.begin(); |
619 |
|
jb != atomListColumn.end(); ++jb) { |
620 |
|
atom2 = (*jb); |
621 |
< |
|
621 |
> |
|
622 |
|
if (!fDecomp_->skipAtomPair(atom1, atom2)) { |
623 |
+ |
vpair = 0.0; |
624 |
+ |
workPot = 0.0; |
625 |
+ |
f1 = V3Zero; |
626 |
+ |
|
627 |
+ |
fDecomp_->fillInteractionData(idat, atom1, atom2); |
628 |
|
|
629 |
< |
pot *= 0.0; |
629 |
> |
topoDist = fDecomp_->getTopologicalDistance(atom1, atom2); |
630 |
> |
vdwMult = vdwScale_[topoDist]; |
631 |
> |
electroMult = electrostaticScale_[topoDist]; |
632 |
|
|
568 |
– |
idat = fDecomp_->fillInteractionData(atom1, atom2); |
569 |
– |
*(idat.pot) = pot; |
570 |
– |
|
633 |
|
if (atomListRow.size() == 1 && atomListColumn.size() == 1) { |
634 |
< |
*(idat.d) = d_grp; |
635 |
< |
*(idat.r2) = rgrpsq; |
634 |
> |
idat.d = &d_grp; |
635 |
> |
idat.r2 = &rgrpsq; |
636 |
|
} else { |
637 |
< |
*(idat.d) = fDecomp_->getInteratomicVector(atom1, atom2); |
638 |
< |
curSnapshot->wrapVector( *(idat.d) ); |
639 |
< |
*(idat.r2) = idat.d->lengthSquare(); |
637 |
> |
d = fDecomp_->getInteratomicVector(atom1, atom2); |
638 |
> |
curSnapshot->wrapVector( d ); |
639 |
> |
r2 = d.lengthSquare(); |
640 |
> |
idat.d = &d; |
641 |
> |
idat.r2 = &r2; |
642 |
|
} |
579 |
– |
|
580 |
– |
*(idat.rij) = sqrt( *(idat.r2) ); |
643 |
|
|
644 |
+ |
r = sqrt( *(idat.r2) ); |
645 |
+ |
idat.rij = &r; |
646 |
+ |
|
647 |
|
if (iLoop == PREPAIR_LOOP) { |
648 |
|
interactionMan_->doPrePair(idat); |
649 |
|
} else { |
650 |
|
interactionMan_->doPair(idat); |
651 |
|
fDecomp_->unpackInteractionData(idat, atom1, atom2); |
652 |
< |
vij += *(idat.vpair); |
653 |
< |
fij += *(idat.f1); |
654 |
< |
tau -= outProduct( *(idat.d), *(idat.f1)); |
652 |
> |
|
653 |
> |
vij += vpair; |
654 |
> |
fij += f1; |
655 |
> |
tau -= outProduct( *(idat.d), f1); |
656 |
|
} |
657 |
|
} |
658 |
|
} |
662 |
|
if (in_switching_region) { |
663 |
|
swderiv = vij * dswdr / rgrp; |
664 |
|
fg = swderiv * d_grp; |
599 |
– |
|
665 |
|
fij += fg; |
666 |
|
|
667 |
|
if (atomListRow.size() == 1 && atomListColumn.size() == 1) { |
713 |
|
} |
714 |
|
|
715 |
|
if (iLoop == PREPAIR_LOOP) { |
716 |
< |
if (info_->requiresPrepair()) { |
716 |
> |
if (info_->requiresPrepair()) { |
717 |
> |
|
718 |
|
fDecomp_->collectIntermediateData(); |
719 |
|
|
720 |
|
for (int atom1 = 0; atom1 < info_->getNAtoms(); atom1++) { |
721 |
< |
sdat = fDecomp_->fillSelfData(atom1); |
721 |
> |
fDecomp_->fillSelfData(sdat, atom1); |
722 |
|
interactionMan_->doPreForce(sdat); |
723 |
|
} |
724 |
|
|
725 |
< |
fDecomp_->distributeIntermediateData(); |
725 |
> |
fDecomp_->distributeIntermediateData(); |
726 |
> |
|
727 |
|
} |
728 |
|
} |
729 |
|
|
730 |
|
} |
731 |
|
|
732 |
|
fDecomp_->collectData(); |
666 |
– |
|
667 |
– |
if ( info_->requiresSkipCorrection() ) { |
668 |
– |
|
669 |
– |
for (int atom1 = 0; atom1 < fDecomp_->getNAtomsInRow(); atom1++) { |
670 |
– |
|
671 |
– |
vector<int> skipList = fDecomp_->getSkipsForRowAtom( atom1 ); |
733 |
|
|
673 |
– |
for (vector<int>::iterator jb = skipList.begin(); |
674 |
– |
jb != skipList.end(); ++jb) { |
675 |
– |
|
676 |
– |
atom2 = (*jb); |
677 |
– |
idat = fDecomp_->fillSkipData(atom1, atom2); |
678 |
– |
interactionMan_->doSkipCorrection(idat); |
679 |
– |
|
680 |
– |
} |
681 |
– |
} |
682 |
– |
} |
683 |
– |
|
734 |
|
if (info_->requiresSelfCorrection()) { |
735 |
|
|
736 |
|
for (int atom1 = 0; atom1 < info_->getNAtoms(); atom1++) { |
737 |
< |
sdat = fDecomp_->fillSelfData(atom1); |
737 |
> |
fDecomp_->fillSelfData(sdat, atom1); |
738 |
|
interactionMan_->doSelfCorrection(sdat); |
739 |
|
} |
740 |
|
|
741 |
|
} |
742 |
|
|
743 |
< |
longRangePotential = fDecomp_->getLongRangePotential(); |
743 |
> |
longRangePotential = *(fDecomp_->getEmbeddingPotential()) + |
744 |
> |
*(fDecomp_->getPairwisePotential()); |
745 |
> |
|
746 |
|
lrPot = longRangePotential.sum(); |
747 |
|
|
748 |
|
//store the tau and long range potential |