pthread_mutex_t emutex;
#endif
+/* fully constrained relaxation technique - global pointers */
+u8 crtt;
+u8 *constraints;
+double *trafo_angle;
+
/*
* the moldyn functions
*/
pthread_mutex_init(&emutex,NULL);
#endif
+ if(crtt)
+ printf("USING CRT\n");
+
return 0;
}
switch(type) {
case MOLDYN_POTENTIAL_TM:
- moldyn->func1b=tersoff_mult_1bp;
+ //moldyn->func1b=tersoff_mult_1bp;
moldyn->func3b_j1=tersoff_mult_3bp_j1;
moldyn->func3b_k1=tersoff_mult_3bp_k1;
moldyn->func3b_j2=tersoff_mult_3bp_j2;
int create_lattice(t_moldyn *moldyn,u8 type,double lc,int element,
u8 attr,u8 brand,int a,int b,int c,t_3dvec *origin,
- t_part_params *p_params,t_defect_params *d_params) {
+ t_part_params *p_params,t_defect_params *d_params,
+ t_offset_params *o_params) {
int new,count;
int ret;
switch(type) {
case CUBIC:
+ if(o_params->use)
+ v3_add(&orig,&orig,&(o_params->o));
set_nn_dist(moldyn,lc);
ret=cubic_init(a,b,c,lc,atom,&orig,p_params,d_params);
strcpy(name,"cubic");
case FCC:
if(!origin)
v3_scale(&orig,&orig,0.5);
+ if(o_params->use)
+ v3_add(&orig,&orig,&(o_params->o));
set_nn_dist(moldyn,0.5*sqrt(2.0)*lc);
ret=fcc_init(a,b,c,lc,atom,&orig,p_params,d_params);
strcpy(name,"fcc");
case DIAMOND:
if(!origin)
v3_scale(&orig,&orig,0.25);
+ if(o_params->use)
+ v3_add(&orig,&orig,&(o_params->o));
set_nn_dist(moldyn,0.25*sqrt(3.0)*lc);
ret=diamond_init(a,b,c,lc,atom,&orig,p_params,d_params);
strcpy(name,"diamond");
temperature_calc(moldyn);
virial_sum(moldyn);
pressure_calc(moldyn);
- /*
+#ifdef PDEBUG
thermodynamic_pressure_calc(moldyn);
printf("\n\nDEBUG: numeric pressure calc: %f\n\n",
moldyn->tp/BAR);
- */
+#endif
/* calculate fluctuations + averages */
average_and_fluctuation_calc(moldyn);
}
/* display progress */
+#ifndef PDEBUG
if(!(i%10)) {
+#endif
/* get current time */
gettimeofday(&t2,NULL);
printf("sched:%d, steps:%d/%d, T:%4.1f/%4.1f P:%4.1f/%4.1f V:%6.1f (%d)\n",
sched->count,i,moldyn->total_steps,
moldyn->t,moldyn->t_avg,
+#ifndef PDEBUG
moldyn->p/BAR,moldyn->p_avg/BAR,
- //moldyn->p/BAR,(moldyn->p-2.0*moldyn->ekin/(3.0*moldyn->volume))/BAR,
+#else
+ moldyn->p/BAR,(moldyn->p-2.0*moldyn->ekin/(3.0*moldyn->volume))/BAR,
+#endif
moldyn->volume,
(int)(t2.tv_sec-t1.tv_sec));
/* copy over time */
t1=t2;
+#ifndef PDEBUG
}
+#endif
/* increase absolute time */
moldyn->time+=moldyn->tau;
}
+ /* writing a final save file! */
+ if(s) {
+ snprintf(dir,128,"%s/s-final.save",moldyn->vlsdir);
+ fd=open(dir,O_WRONLY|O_TRUNC|O_CREAT,S_IRUSR|S_IWUSR);
+ if(fd<0) perror("[moldyn] save fd open");
+ else {
+ write(fd,moldyn,sizeof(t_moldyn));
+ write(fd,moldyn->atom,
+ moldyn->count*sizeof(t_atom));
+ }
+ close(fd);
+ }
+ /* writing a final visual file! */
+ if(a)
+ visual_atoms(moldyn);
+
+ return 0;
+}
+
+/* basis trafo */
+
+#define FORWARD 0
+#define BACKWARD 1
+
+int basis_trafo(t_3dvec *r,u8 dir,double z,double x) {
+
+ t_3dvec tmp;
+
+ if(dir==FORWARD) {
+ if(z!=0.0) {
+ v3_copy(&tmp,r);
+ r->x=cos(z)*tmp.x-sin(z)*tmp.y;
+ r->y=sin(z)*tmp.x+cos(z)*tmp.y;
+ }
+ if(x!=0.0) {
+ v3_copy(&tmp,r);
+ r->y=cos(x)*tmp.y-sin(x)*tmp.z;
+ r->z=sin(x)*tmp.y+cos(x)*tmp.z;
+ }
+ }
+ else {
+ if(x!=0.0) {
+ v3_copy(&tmp,r);
+ r->y=cos(-x)*tmp.y-sin(-x)*tmp.z;
+ r->z=sin(-x)*tmp.y+cos(-x)*tmp.z;
+ }
+ if(z!=0.0) {
+ v3_copy(&tmp,r);
+ r->x=cos(-z)*tmp.x-sin(-z)*tmp.y;
+ r->y=sin(-z)*tmp.x+cos(-z)*tmp.y;
+ }
+ }
+
return 0;
}
tau_square=moldyn->tau_square;
for(i=0;i<count;i++) {
+
/* check whether fixed atom */
if(atom[i].attr&ATOM_ATTR_FP)
continue;
+
/* new positions */
h=0.5/atom[i].mass;
+
+ /* constraint relaxation */
+ if(crtt) {
+ basis_trafo(&(atom[i].f),FORWARD,
+ trafo_angle[2*i],trafo_angle[2*i+1]);
+ if(constraints[3*i])
+ atom[i].f.x=0;
+ if(constraints[3*i+1])
+ atom[i].f.y=0;
+ if(constraints[3*i+2])
+ atom[i].f.z=0;
+ basis_trafo(&(atom[i].f),BACKWARD,
+ trafo_angle[2*i],trafo_angle[2*i+1]);
+ }
+
+#ifndef QUENCH
v3_scale(&delta,&(atom[i].v),tau);
v3_add(&(atom[i].r),&(atom[i].r),&delta);
+#endif
v3_scale(&delta,&(atom[i].f),h*tau_square);
v3_add(&(atom[i].r),&(atom[i].r),&delta);
+ //check_per_bound_and_care_for_pbc(moldyn,&(atom[i]));
check_per_bound(moldyn,&(atom[i].r));
/* velocities [actually v(t+tau/2)] */
/* forces depending on chosen potential */
#ifndef ALBE_FAST
- potential_force_calc(moldyn);
+ // if albe, use albe force calc routine
+ //if(moldyn->func3b_j1==albe_mult_3bp_j1)
+ // albe_potential_force_calc(moldyn);
+ //else
+ potential_force_calc(moldyn);
#else
albe_potential_force_calc(moldyn);
#endif
/* check whether fixed atom */
if(atom[i].attr&ATOM_ATTR_FP)
continue;
+
+ /* constraint relaxation */
+ if(crtt) {
+ basis_trafo(&(atom[i].f),FORWARD,
+ trafo_angle[2*i],trafo_angle[2*i+1]);
+ if(constraints[3*i])
+ atom[i].f.x=0;
+ if(constraints[3*i+1])
+ atom[i].f.y=0;
+ if(constraints[3*i+2])
+ atom[i].f.z=0;
+ basis_trafo(&(atom[i].f),BACKWARD,
+ trafo_angle[2*i],trafo_angle[2*i+1]);
+ }
+
/* again velocities [actually v(t+tau)] */
v3_scale(&delta,&(atom[i].f),0.5*tau/atom[i].mass);
v3_add(&(atom[i].v),&(atom[i].v),&delta);
return 0;
}
+int check_per_bound_and_care_for_pbc(t_moldyn *moldyn,t_atom *a) {
+
+ double x,y,z;
+ t_3dvec *dim;
+
+ dim=&(moldyn->dim);
+
+ x=dim->x/2;
+ y=dim->y/2;
+ z=dim->z/2;
+
+ if(moldyn->status&MOLDYN_STAT_PBX) {
+ if(a->r.x>=x) {
+ a->pbc[0]+=1;
+ a->r.x-=dim->x;
+ }
+ else if(-a->r.x>x) {
+ a->pbc[0]-=1;
+ a->r.x+=dim->x;
+ }
+ }
+ if(moldyn->status&MOLDYN_STAT_PBY) {
+ if(a->r.y>=y) {
+ a->pbc[1]+=1;
+ a->r.y-=dim->y;
+ }
+ else if(-a->r.y>y) {
+ a->pbc[1]-=1;
+ a->r.y+=dim->y;
+ }
+ }
+ if(moldyn->status&MOLDYN_STAT_PBZ) {
+ if(a->r.z>=z) {
+ a->pbc[2]+=1;
+ a->r.z-=dim->z;
+ }
+ else if(-a->r.z>z) {
+ a->pbc[2]-=1;
+ a->r.z+=dim->z;
+ }
+ }
+
+ return 0;
+}
+
/*
* debugging / critical check functions
*/
if(fsize!=sizeof(t_moldyn)+size) {
corr=fsize-sizeof(t_moldyn)-size;
printf("[moldyn] WARNING: lsf (illegal file size)\n");
- printf(" moifying offset:\n");
+ printf(" modifying offset:\n");
printf(" - current pos: %d\n",sizeof(t_moldyn));
printf(" - atom size: %d\n",size);
printf(" - file size: %d\n",fsize);
int i;
t_atom *atom;
t_3dvec dist;
+ t_3dvec final_r;
double d2;
int a_cnt;
int b_cnt;
for(i=0;i<moldyn->count;i++) {
- v3_sub(&dist,&(atom[i].r),&(atom[i].r_0));
- check_per_bound(moldyn,&dist);
+ /* care for pb crossing */
+ final_r.x=atom[i].r.x+atom[i].pbc[0]*moldyn->dim.x;
+ final_r.y=atom[i].r.y+atom[i].pbc[1]*moldyn->dim.y;
+ final_r.z=atom[i].r.z+atom[i].pbc[2]*moldyn->dim.z;
+ /* calculate distance */
+ v3_sub(&dist,&final_r,&(atom[i].r_0));
d2=v3_absolute_square(&dist);
if(atom[i].brand) {
return 0;
}
+int calculate_msd(t_moldyn *moldyn,double *msd) {
+
+ int i;
+ t_atom *atom;
+ t_3dvec dist;
+ t_3dvec final_r;
+ double d2;
+ int a_cnt;
+ int b_cnt;
+
+ atom=moldyn->atom;
+ msd[0]=0;
+ msd[1]=0;
+ msd[2]=0;
+ a_cnt=0;
+ b_cnt=0;
+
+ for(i=0;i<moldyn->count;i++) {
+
+ /* care for pb crossing */
+ if(atom[i].pbc[0]|atom[i].pbc[1]|atom[i].pbc[2]) {
+ printf("[moldyn] msd pb crossings for atom %d\n",i);
+ printf(" x: %d y: %d z: %d\n",
+ atom[i].pbc[0],atom[i].pbc[1],atom[i].pbc[2]);
+ }
+ final_r.x=atom[i].r.x+atom[i].pbc[0]*moldyn->dim.x;
+ final_r.y=atom[i].r.y+atom[i].pbc[1]*moldyn->dim.y;
+ final_r.z=atom[i].r.z+atom[i].pbc[2]*moldyn->dim.z;
+ /* calculate distance */
+ v3_sub(&dist,&final_r,&(atom[i].r_0));
+ d2=v3_absolute_square(&dist);
+
+ if(atom[i].brand) {
+ b_cnt+=1;
+ msd[1]+=d2;
+ }
+ else {
+ a_cnt+=1;
+ msd[0]+=d2;
+ }
+
+ msd[2]+=d2;
+ }
+
+ msd[0]/=a_cnt;
+ msd[1]/=b_cnt;
+ msd[2]/=moldyn->count;
+
+ return 0;
+}
+
int bonding_analyze(t_moldyn *moldyn,double *cnt) {
return 0;
projects / physik / posic.git / blobdiff