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lammps/src/neigh_bond.cpp

555 lines
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C++

/* ----------------------------------------------------------------------
LAMMPS - Large-scale Atomic/Molecular Massively Parallel Simulator
http://lammps.sandia.gov, Sandia National Laboratories
Steve Plimpton, sjplimp@sandia.gov
Copyright (2003) Sandia Corporation. Under the terms of Contract
DE-AC04-94AL85000 with Sandia Corporation, the U.S. Government retains
certain rights in this software. This software is distributed under
the GNU General Public License.
See the README file in the top-level LAMMPS directory.
------------------------------------------------------------------------- */
#include "neighbor.h"
#include "atom.h"
#include "force.h"
#include "update.h"
#include "domain.h"
#include "memory.h"
#include "error.h"
using namespace LAMMPS_NS;
#define BONDDELTA 10000
// bondlist, anglelist, dihedrallist, improperlist
// no longer store atom->map() of the bond partners
// instead store domain->closest_image() of the bond partners of atom I
// this enables distances between list atoms to be calculated
// w/out invoking domain->minimium_image(), e.g. in bond->compute()
/* ---------------------------------------------------------------------- */
void Neighbor::bond_all()
{
int i,m,atom1;
int nlocal = atom->nlocal;
int *num_bond = atom->num_bond;
int **bond_atom = atom->bond_atom;
int **bond_type = atom->bond_type;
int *tag = atom->tag;
int newton_bond = force->newton_bond;
nbondlist = 0;
for (i = 0; i < nlocal; i++)
for (m = 0; m < num_bond[i]; m++) {
atom1 = atom->map(bond_atom[i][m]);
if (atom1 == -1) {
char str[128];
sprintf(str,
"Bond atoms %d %d missing on proc %d at step " BIGINT_FORMAT,
tag[i],bond_atom[i][m],me,update->ntimestep);
error->one(FLERR,str);
}
atom1 = domain->closest_image(i,atom1);
if (newton_bond || i < atom1) {
if (nbondlist == maxbond) {
maxbond += BONDDELTA;
memory->grow(bondlist,maxbond,3,"neighbor:bondlist");
}
bondlist[nbondlist][0] = i;
bondlist[nbondlist][1] = atom1;
bondlist[nbondlist][2] = bond_type[i][m];
nbondlist++;
}
}
if (cluster_check) bond_check();
}
/* ---------------------------------------------------------------------- */
void Neighbor::bond_partial()
{
int i,m,atom1;
int nlocal = atom->nlocal;
int *num_bond = atom->num_bond;
int **bond_atom = atom->bond_atom;
int **bond_type = atom->bond_type;
int *tag = atom->tag;
int newton_bond = force->newton_bond;
nbondlist = 0;
for (i = 0; i < nlocal; i++)
for (m = 0; m < num_bond[i]; m++) {
if (bond_type[i][m] <= 0) continue;
atom1 = atom->map(bond_atom[i][m]);
if (atom1 == -1) {
char str[128];
sprintf(str,
"Bond atoms %d %d missing on proc %d at step " BIGINT_FORMAT,
tag[i],bond_atom[i][m],me,update->ntimestep);
error->one(FLERR,str);
}
atom1 = domain->closest_image(i,atom1);
if (newton_bond || i < atom1) {
if (nbondlist == maxbond) {
maxbond += BONDDELTA;
memory->grow(bondlist,maxbond,3,"neighbor:bondlist");
}
bondlist[nbondlist][0] = i;
bondlist[nbondlist][1] = atom1;
bondlist[nbondlist][2] = bond_type[i][m];
nbondlist++;
}
}
if (cluster_check) bond_check();
}
/* ---------------------------------------------------------------------- */
void Neighbor::bond_check()
{
int i,j;
double dx,dy,dz,dxstart,dystart,dzstart;
double **x = atom->x;
int flag = 0;
for (int m = 0; m < nbondlist; m++) {
i = bondlist[m][0];
j = bondlist[m][1];
dxstart = dx = x[i][0] - x[j][0];
dystart = dy = x[i][1] - x[j][1];
dzstart = dz = x[i][2] - x[j][2];
domain->minimum_image(dx,dy,dz);
if (dx != dxstart || dy != dystart || dz != dzstart) flag = 1;
}
int flag_all;
MPI_Allreduce(&flag,&flag_all,1,MPI_INT,MPI_SUM,world);
if (flag_all) error->all(FLERR,"Bond extent > half of periodic box length");
}
/* ---------------------------------------------------------------------- */
void Neighbor::angle_all()
{
int i,m,atom1,atom2,atom3;
int nlocal = atom->nlocal;
int *num_angle = atom->num_angle;
int **angle_atom1 = atom->angle_atom1;
int **angle_atom2 = atom->angle_atom2;
int **angle_atom3 = atom->angle_atom3;
int **angle_type = atom->angle_type;
int newton_bond = force->newton_bond;
nanglelist = 0;
for (i = 0; i < nlocal; i++)
for (m = 0; m < num_angle[i]; m++) {
atom1 = atom->map(angle_atom1[i][m]);
atom2 = atom->map(angle_atom2[i][m]);
atom3 = atom->map(angle_atom3[i][m]);
if (atom1 == -1 || atom2 == -1 || atom3 == -1) {
char str[128];
sprintf(str,
"Angle atoms %d %d %d missing on proc %d at step "
BIGINT_FORMAT,
angle_atom1[i][m],angle_atom2[i][m],angle_atom3[i][m],
me,update->ntimestep);
error->one(FLERR,str);
}
atom1 = domain->closest_image(i,atom1);
atom2 = domain->closest_image(i,atom2);
atom3 = domain->closest_image(i,atom3);
if (newton_bond || (i <= atom1 && i <= atom2 && i <= atom3)) {
if (nanglelist == maxangle) {
maxangle += BONDDELTA;
memory->grow(anglelist,maxangle,4,"neighbor:anglelist");
}
anglelist[nanglelist][0] = atom1;
anglelist[nanglelist][1] = atom2;
anglelist[nanglelist][2] = atom3;
anglelist[nanglelist][3] = angle_type[i][m];
nanglelist++;
}
}
if (cluster_check) angle_check();
}
/* ---------------------------------------------------------------------- */
void Neighbor::angle_partial()
{
int i,m,atom1,atom2,atom3;
int nlocal = atom->nlocal;
int *num_angle = atom->num_angle;
int **angle_atom1 = atom->angle_atom1;
int **angle_atom2 = atom->angle_atom2;
int **angle_atom3 = atom->angle_atom3;
int **angle_type = atom->angle_type;
int newton_bond = force->newton_bond;
nanglelist = 0;
for (i = 0; i < nlocal; i++)
for (m = 0; m < num_angle[i]; m++) {
if (angle_type[i][m] <= 0) continue;
atom1 = atom->map(angle_atom1[i][m]);
atom2 = atom->map(angle_atom2[i][m]);
atom3 = atom->map(angle_atom3[i][m]);
if (atom1 == -1 || atom2 == -1 || atom3 == -1) {
char str[128];
sprintf(str,
"Angle atoms %d %d %d missing on proc %d at step "
BIGINT_FORMAT,
angle_atom1[i][m],angle_atom2[i][m],angle_atom3[i][m],
me,update->ntimestep);
error->one(FLERR,str);
}
atom1 = domain->closest_image(i,atom1);
atom2 = domain->closest_image(i,atom2);
atom3 = domain->closest_image(i,atom3);
if (newton_bond || (i <= atom1 && i <= atom2 && i <= atom3)) {
if (nanglelist == maxangle) {
maxangle += BONDDELTA;
memory->grow(anglelist,maxangle,4,"neighbor:anglelist");
}
anglelist[nanglelist][0] = atom1;
anglelist[nanglelist][1] = atom2;
anglelist[nanglelist][2] = atom3;
anglelist[nanglelist][3] = angle_type[i][m];
nanglelist++;
}
}
if (cluster_check) angle_check();
}
/* ---------------------------------------------------------------------- */
void Neighbor::angle_check()
{
int i,j,k;
double dx,dy,dz,dxstart,dystart,dzstart;
double **x = atom->x;
int flag = 0;
// check all 3 distances
// in case angle potential computes any of them
for (int m = 0; m < nanglelist; m++) {
i = anglelist[m][0];
j = anglelist[m][1];
k = anglelist[m][2];
dxstart = dx = x[i][0] - x[j][0];
dystart = dy = x[i][1] - x[j][1];
dzstart = dz = x[i][2] - x[j][2];
domain->minimum_image(dx,dy,dz);
if (dx != dxstart || dy != dystart || dz != dzstart) flag = 1;
dxstart = dx = x[i][0] - x[k][0];
dystart = dy = x[i][1] - x[k][1];
dzstart = dz = x[i][2] - x[k][2];
domain->minimum_image(dx,dy,dz);
if (dx != dxstart || dy != dystart || dz != dzstart) flag = 1;
dxstart = dx = x[j][0] - x[k][0];
dystart = dy = x[j][1] - x[k][1];
dzstart = dz = x[j][2] - x[k][2];
domain->minimum_image(dx,dy,dz);
if (dx != dxstart || dy != dystart || dz != dzstart) flag = 1;
}
int flag_all;
MPI_Allreduce(&flag,&flag_all,1,MPI_INT,MPI_SUM,world);
if (flag_all) error->all(FLERR,"Angle extent > half of periodic box length");
}
/* ---------------------------------------------------------------------- */
void Neighbor::dihedral_all()
{
int i,m,atom1,atom2,atom3,atom4;
int nlocal = atom->nlocal;
int *num_dihedral = atom->num_dihedral;
int **dihedral_atom1 = atom->dihedral_atom1;
int **dihedral_atom2 = atom->dihedral_atom2;
int **dihedral_atom3 = atom->dihedral_atom3;
int **dihedral_atom4 = atom->dihedral_atom4;
int **dihedral_type = atom->dihedral_type;
int newton_bond = force->newton_bond;
ndihedrallist = 0;
for (i = 0; i < nlocal; i++)
for (m = 0; m < num_dihedral[i]; m++) {
atom1 = atom->map(dihedral_atom1[i][m]);
atom2 = atom->map(dihedral_atom2[i][m]);
atom3 = atom->map(dihedral_atom3[i][m]);
atom4 = atom->map(dihedral_atom4[i][m]);
if (atom1 == -1 || atom2 == -1 || atom3 == -1 || atom4 == -1) {
char str[128];
sprintf(str,
"Dihedral atoms %d %d %d %d missing on proc %d at step "
BIGINT_FORMAT,
dihedral_atom1[i][m],dihedral_atom2[i][m],
dihedral_atom3[i][m],dihedral_atom4[i][m],
me,update->ntimestep);
error->one(FLERR,str);
}
atom1 = domain->closest_image(i,atom1);
atom2 = domain->closest_image(i,atom2);
atom3 = domain->closest_image(i,atom3);
atom4 = domain->closest_image(i,atom4);
if (newton_bond ||
(i <= atom1 && i <= atom2 && i <= atom3 && i <= atom4)) {
if (ndihedrallist == maxdihedral) {
maxdihedral += BONDDELTA;
memory->grow(dihedrallist,maxdihedral,5,"neighbor:dihedrallist");
}
dihedrallist[ndihedrallist][0] = atom1;
dihedrallist[ndihedrallist][1] = atom2;
dihedrallist[ndihedrallist][2] = atom3;
dihedrallist[ndihedrallist][3] = atom4;
dihedrallist[ndihedrallist][4] = dihedral_type[i][m];
ndihedrallist++;
}
}
if (cluster_check) dihedral_check(ndihedrallist,dihedrallist);
}
/* ---------------------------------------------------------------------- */
void Neighbor::dihedral_partial()
{
int i,m,atom1,atom2,atom3,atom4;
int nlocal = atom->nlocal;
int *num_dihedral = atom->num_dihedral;
int **dihedral_atom1 = atom->dihedral_atom1;
int **dihedral_atom2 = atom->dihedral_atom2;
int **dihedral_atom3 = atom->dihedral_atom3;
int **dihedral_atom4 = atom->dihedral_atom4;
int **dihedral_type = atom->dihedral_type;
int newton_bond = force->newton_bond;
ndihedrallist = 0;
for (i = 0; i < nlocal; i++)
for (m = 0; m < num_dihedral[i]; m++) {
if (dihedral_type[i][m] <= 0) continue;
atom1 = atom->map(dihedral_atom1[i][m]);
atom2 = atom->map(dihedral_atom2[i][m]);
atom3 = atom->map(dihedral_atom3[i][m]);
atom4 = atom->map(dihedral_atom4[i][m]);
if (atom1 == -1 || atom2 == -1 || atom3 == -1 || atom4 == -1) {
char str[128];
sprintf(str,
"Dihedral atoms %d %d %d %d missing on proc %d at step "
BIGINT_FORMAT,
dihedral_atom1[i][m],dihedral_atom2[i][m],
dihedral_atom3[i][m],dihedral_atom4[i][m],
me,update->ntimestep);
error->one(FLERR,str);
}
atom1 = domain->closest_image(i,atom1);
atom2 = domain->closest_image(i,atom2);
atom3 = domain->closest_image(i,atom3);
atom4 = domain->closest_image(i,atom4);
if (newton_bond ||
(i <= atom1 && i <= atom2 && i <= atom3 && i <= atom4)) {
if (ndihedrallist == maxdihedral) {
maxdihedral += BONDDELTA;
memory->grow(dihedrallist,maxdihedral,5,"neighbor:dihedrallist");
}
dihedrallist[ndihedrallist][0] = atom1;
dihedrallist[ndihedrallist][1] = atom2;
dihedrallist[ndihedrallist][2] = atom3;
dihedrallist[ndihedrallist][3] = atom4;
dihedrallist[ndihedrallist][4] = dihedral_type[i][m];
ndihedrallist++;
}
}
if (cluster_check) dihedral_check(ndihedrallist,dihedrallist);
}
/* ---------------------------------------------------------------------- */
void Neighbor::dihedral_check(int nlist, int **list)
{
int i,j,k,l;
double dx,dy,dz,dxstart,dystart,dzstart;
double **x = atom->x;
int flag = 0;
// check all 6 distances
// in case dihedral/improper potential computes any of them
for (int m = 0; m < nlist; m++) {
i = list[m][0];
j = list[m][1];
k = list[m][2];
l = list[m][3];
dxstart = dx = x[i][0] - x[j][0];
dystart = dy = x[i][1] - x[j][1];
dzstart = dz = x[i][2] - x[j][2];
domain->minimum_image(dx,dy,dz);
if (dx != dxstart || dy != dystart || dz != dzstart) flag = 1;
dxstart = dx = x[i][0] - x[k][0];
dystart = dy = x[i][1] - x[k][1];
dzstart = dz = x[i][2] - x[k][2];
domain->minimum_image(dx,dy,dz);
if (dx != dxstart || dy != dystart || dz != dzstart) flag = 1;
dxstart = dx = x[i][0] - x[l][0];
dystart = dy = x[i][1] - x[l][1];
dzstart = dz = x[i][2] - x[l][2];
domain->minimum_image(dx,dy,dz);
if (dx != dxstart || dy != dystart || dz != dzstart) flag = 1;
dxstart = dx = x[j][0] - x[k][0];
dystart = dy = x[j][1] - x[k][1];
dzstart = dz = x[j][2] - x[k][2];
domain->minimum_image(dx,dy,dz);
if (dx != dxstart || dy != dystart || dz != dzstart) flag = 1;
dxstart = dx = x[j][0] - x[l][0];
dystart = dy = x[j][1] - x[l][1];
dzstart = dz = x[j][2] - x[l][2];
domain->minimum_image(dx,dy,dz);
if (dx != dxstart || dy != dystart || dz != dzstart) flag = 1;
dxstart = dx = x[k][0] - x[l][0];
dystart = dy = x[k][1] - x[l][1];
dzstart = dz = x[k][2] - x[l][2];
domain->minimum_image(dx,dy,dz);
if (dx != dxstart || dy != dystart || dz != dzstart) flag = 1;
}
int flag_all;
MPI_Allreduce(&flag,&flag_all,1,MPI_INT,MPI_SUM,world);
if (flag_all)
error->all(FLERR,"Dihedral/improper extent > half of periodic box length");
}
/* ---------------------------------------------------------------------- */
void Neighbor::improper_all()
{
int i,m,atom1,atom2,atom3,atom4;
int nlocal = atom->nlocal;
int *num_improper = atom->num_improper;
int **improper_atom1 = atom->improper_atom1;
int **improper_atom2 = atom->improper_atom2;
int **improper_atom3 = atom->improper_atom3;
int **improper_atom4 = atom->improper_atom4;
int **improper_type = atom->improper_type;
int newton_bond = force->newton_bond;
nimproperlist = 0;
for (i = 0; i < nlocal; i++)
for (m = 0; m < num_improper[i]; m++) {
atom1 = atom->map(improper_atom1[i][m]);
atom2 = atom->map(improper_atom2[i][m]);
atom3 = atom->map(improper_atom3[i][m]);
atom4 = atom->map(improper_atom4[i][m]);
if (atom1 == -1 || atom2 == -1 || atom3 == -1 || atom4 == -1) {
char str[128];
sprintf(str,
"Improper atoms %d %d %d %d missing on proc %d at step "
BIGINT_FORMAT,
improper_atom1[i][m],improper_atom2[i][m],
improper_atom3[i][m],improper_atom4[i][m],
me,update->ntimestep);
error->one(FLERR,str);
}
atom1 = domain->closest_image(i,atom1);
atom2 = domain->closest_image(i,atom2);
atom3 = domain->closest_image(i,atom3);
atom4 = domain-> closest_image(i,atom4);
if (newton_bond ||
(i <= atom1 && i <= atom2 && i <= atom3 && i <= atom4)) {
if (nimproperlist == maximproper) {
maximproper += BONDDELTA;
memory->grow(improperlist,maximproper,5,"neighbor:improperlist");
}
improperlist[nimproperlist][0] = atom1;
improperlist[nimproperlist][1] = atom2;
improperlist[nimproperlist][2] = atom3;
improperlist[nimproperlist][3] = atom4;
improperlist[nimproperlist][4] = improper_type[i][m];
nimproperlist++;
}
}
if (cluster_check) dihedral_check(nimproperlist,improperlist);
}
/* ---------------------------------------------------------------------- */
void Neighbor::improper_partial()
{
int i,m,atom1,atom2,atom3,atom4;
int nlocal = atom->nlocal;
int *num_improper = atom->num_improper;
int **improper_atom1 = atom->improper_atom1;
int **improper_atom2 = atom->improper_atom2;
int **improper_atom3 = atom->improper_atom3;
int **improper_atom4 = atom->improper_atom4;
int **improper_type = atom->improper_type;
int newton_bond = force->newton_bond;
nimproperlist = 0;
for (i = 0; i < nlocal; i++)
for (m = 0; m < num_improper[i]; m++) {
if (improper_type[i][m] <= 0) continue;
atom1 = atom->map(improper_atom1[i][m]);
atom2 = atom->map(improper_atom2[i][m]);
atom3 = atom->map(improper_atom3[i][m]);
atom4 = atom->map(improper_atom4[i][m]);
if (atom1 == -1 || atom2 == -1 || atom3 == -1 || atom4 == -1) {
char str[128];
sprintf(str,
"Improper atoms %d %d %d %d missing on proc %d at step "
BIGINT_FORMAT,
improper_atom1[i][m],improper_atom2[i][m],
improper_atom3[i][m],improper_atom4[i][m],
me,update->ntimestep);
error->one(FLERR,str);
}
atom1 = domain->closest_image(i,atom1);
atom2 = domain->closest_image(i,atom2);
atom3 = domain->closest_image(i,atom3);
atom4 = domain->closest_image(i,atom4);
if (newton_bond ||
(i <= atom1 && i <= atom2 && i <= atom3 && i <= atom4)) {
if (nimproperlist == maximproper) {
maximproper += BONDDELTA;
memory->grow(improperlist,maximproper,5,"neighbor:improperlist");
}
improperlist[nimproperlist][0] = atom1;
improperlist[nimproperlist][1] = atom2;
improperlist[nimproperlist][2] = atom3;
improperlist[nimproperlist][3] = atom4;
improperlist[nimproperlist][4] = improper_type[i][m];
nimproperlist++;
}
}
if (cluster_check) dihedral_check(nimproperlist,improperlist);
}