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PairTableKokkos : public PairTable

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This commit is contained in:
Dan Ibanez
2017-01-04 08:24:11 -07:00
parent 17bdb57bb4
commit a1ac861084
3 changed files with 3 additions and 620 deletions
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613
src/KOKKOS/pair_table_kokkos.cpp
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@ -33,20 +33,13 @@
using namespace LAMMPS_NS;
enum{NONE,RLINEAR,RSQ,BMP};
enum{FULL,HALFTHREAD,HALF};
#define MAXLINE 1024
/* ---------------------------------------------------------------------- */
template<class DeviceType>
PairTableKokkos<DeviceType>::PairTableKokkos(LAMMPS *lmp) : Pair(lmp)
PairTableKokkos<DeviceType>::PairTableKokkos(LAMMPS *lmp) : PairTable(lmp)
{
update_table = 0;
atomKK = (AtomKokkos *) atom;
ntables = 0;
tables = NULL;
execution_space = ExecutionSpaceFromDevice<DeviceType>::space;
datamask_read = X_MASK | F_MASK | TYPE_MASK | ENERGY_MASK | VIRIAL_MASK;
datamask_modify = F_MASK | ENERGY_MASK | VIRIAL_MASK;
@ -412,85 +405,6 @@ void PairTableKokkos<DeviceType>::settings(int narg, char **arg)
tables = NULL;
}
/* ----------------------------------------------------------------------
set coeffs for one or more type pairs
------------------------------------------------------------------------- */
template<class DeviceType>
void PairTableKokkos<DeviceType>::coeff(int narg, char **arg)
{
if (narg != 4 && narg != 5) error->all(FLERR,"Illegal pair_coeff command");
if (!allocated) allocate();
int ilo,ihi,jlo,jhi;
force->bounds(FLERR,arg[0],atom->ntypes,ilo,ihi);
force->bounds(FLERR,arg[1],atom->ntypes,jlo,jhi);
int me;
MPI_Comm_rank(world,&me);
tables = (Table *)
memory->srealloc(tables,(ntables+1)*sizeof(Table),"pair:tables");
Table *tb = &tables[ntables];
null_table(tb);
if (me == 0) read_table(tb,arg[2],arg[3]);
bcast_table(tb);
// set table cutoff
if (narg == 5) tb->cut = force->numeric(FLERR,arg[4]);
else if (tb->rflag) tb->cut = tb->rhi;
else tb->cut = tb->rfile[tb->ninput-1];
// error check on table parameters
// insure cutoff is within table
// for BITMAP tables, file values can be in non-ascending order
if (tb->ninput <= 1) error->one(FLERR,"Invalid pair table length");
double rlo,rhi;
if (tb->rflag == 0) {
rlo = tb->rfile[0];
rhi = tb->rfile[tb->ninput-1];
} else {
rlo = tb->rlo;
rhi = tb->rhi;
}
if (tb->cut <= rlo || tb->cut > rhi)
error->all(FLERR,"Invalid pair table cutoff");
if (rlo <= 0.0) error->all(FLERR,"Invalid pair table cutoff");
// match = 1 if don't need to spline read-in tables
// this is only the case if r values needed by final tables
// exactly match r values read from file
// for tabstyle SPLINE, always need to build spline tables
tb->match = 0;
if (tabstyle == LINEAR && tb->ninput == tablength &&
tb->rflag == RSQ && tb->rhi == tb->cut) tb->match = 1;
if (tabstyle == BITMAP && tb->ninput == 1 << tablength &&
tb->rflag == BMP && tb->rhi == tb->cut) tb->match = 1;
if (tb->rflag == BMP && tb->match == 0)
error->all(FLERR,"Bitmapped table in file does not match requested table");
// spline read-in values and compute r,e,f vectors within table
if (tb->match == 0) spline_table(tb);
compute_table(tb);
// store ptr to table in tabindex
int count = 0;
for (int i = ilo; i <= ihi; i++) {
for (int j = MAX(jlo,i); j <= jhi; j++) {
tabindex[i][j] = ntables;
setflag[i][j] = 1;
count++;
}
}
if (count == 0) error->all(FLERR,"Illegal pair_coeff command");
ntables++;
}
/* ----------------------------------------------------------------------
init for one type pair i,j and corresponding j,i
------------------------------------------------------------------------- */
@ -509,202 +423,6 @@ double PairTableKokkos<DeviceType>::init_one(int i, int j)
return tables[tabindex[i][j]].cut;
}
/* ----------------------------------------------------------------------
read a table section from a tabulated potential file
only called by proc 0
this function sets these values in Table:
ninput,rfile,efile,ffile,rflag,rlo,rhi,fpflag,fplo,fphi,ntablebits
------------------------------------------------------------------------- */
template<class DeviceType>
void PairTableKokkos<DeviceType>::read_table(Table *tb, char *file, char *keyword)
{
char line[MAXLINE];
// open file
FILE *fp = force->open_potential(file);
if (fp == NULL) {
char str[128];
sprintf(str,"Cannot open file %s",file);
error->one(FLERR,str);
}
// loop until section found with matching keyword
while (1) {
if (fgets(line,MAXLINE,fp) == NULL)
error->one(FLERR,"Did not find keyword in table file");
if (strspn(line," \t\n\r") == strlen(line)) continue; // blank line
if (line[0] == '#') continue; // comment
char *word = strtok(line," \t\n\r");
if (strcmp(word,keyword) == 0) break; // matching keyword
fgets(line,MAXLINE,fp); // no match, skip section
param_extract(tb,line);
fgets(line,MAXLINE,fp);
for (int i = 0; i < tb->ninput; i++) fgets(line,MAXLINE,fp);
}
// read args on 2nd line of section
// allocate table arrays for file values
fgets(line,MAXLINE,fp);
param_extract(tb,line);
memory->create(tb->rfile,tb->ninput,"pair:rfile");
memory->create(tb->efile,tb->ninput,"pair:efile");
memory->create(tb->ffile,tb->ninput,"pair:ffile");
// setup bitmap parameters for table to read in
tb->ntablebits = 0;
int masklo,maskhi,nmask,nshiftbits;
if (tb->rflag == BMP) {
while (1 << tb->ntablebits < tb->ninput) tb->ntablebits++;
if (1 << tb->ntablebits != tb->ninput)
error->one(FLERR,"Bitmapped table is incorrect length in table file");
init_bitmap(tb->rlo,tb->rhi,tb->ntablebits,masklo,maskhi,nmask,nshiftbits);
}
// read r,e,f table values from file
// if rflag set, compute r
// if rflag not set, use r from file
int itmp;
double rtmp;
union_int_float_t rsq_lookup;
fgets(line,MAXLINE,fp);
for (int i = 0; i < tb->ninput; i++) {
fgets(line,MAXLINE,fp);
sscanf(line,"%d %lg %lg %lg",&itmp,&rtmp,&tb->efile[i],&tb->ffile[i]);
if (tb->rflag == RLINEAR)
rtmp = tb->rlo + (tb->rhi - tb->rlo)*i/(tb->ninput-1);
else if (tb->rflag == RSQ) {
rtmp = tb->rlo*tb->rlo +
(tb->rhi*tb->rhi - tb->rlo*tb->rlo)*i/(tb->ninput-1);
rtmp = sqrt(rtmp);
} else if (tb->rflag == BMP) {
rsq_lookup.i = i << nshiftbits;
rsq_lookup.i |= masklo;
if (rsq_lookup.f < tb->rlo*tb->rlo) {
rsq_lookup.i = i << nshiftbits;
rsq_lookup.i |= maskhi;
}
rtmp = sqrtf(rsq_lookup.f);
}
tb->rfile[i] = rtmp;
}
// close file
fclose(fp);
}
/* ----------------------------------------------------------------------
broadcast read-in table info from proc 0 to other procs
this function communicates these values in Table:
ninput,rfile,efile,ffile,rflag,rlo,rhi,fpflag,fplo,fphi
------------------------------------------------------------------------- */
template<class DeviceType>
void PairTableKokkos<DeviceType>::bcast_table(Table *tb)
{
MPI_Bcast(&tb->ninput,1,MPI_INT,0,world);
int me;
MPI_Comm_rank(world,&me);
if (me > 0) {
memory->create(tb->rfile,tb->ninput,"pair:rfile");
memory->create(tb->efile,tb->ninput,"pair:efile");
memory->create(tb->ffile,tb->ninput,"pair:ffile");
}
MPI_Bcast(tb->rfile,tb->ninput,MPI_DOUBLE,0,world);
MPI_Bcast(tb->efile,tb->ninput,MPI_DOUBLE,0,world);
MPI_Bcast(tb->ffile,tb->ninput,MPI_DOUBLE,0,world);
MPI_Bcast(&tb->rflag,1,MPI_INT,0,world);
if (tb->rflag) {
MPI_Bcast(&tb->rlo,1,MPI_DOUBLE,0,world);
MPI_Bcast(&tb->rhi,1,MPI_DOUBLE,0,world);
}
MPI_Bcast(&tb->fpflag,1,MPI_INT,0,world);
if (tb->fpflag) {
MPI_Bcast(&tb->fplo,1,MPI_DOUBLE,0,world);
MPI_Bcast(&tb->fphi,1,MPI_DOUBLE,0,world);
}
}
/* ----------------------------------------------------------------------
build spline representation of e,f over entire range of read-in table
this function sets these values in Table: e2file,f2file
------------------------------------------------------------------------- */
template<class DeviceType>
void PairTableKokkos<DeviceType>::spline_table(Table *tb)
{
memory->create(tb->e2file,tb->ninput,"pair:e2file");
memory->create(tb->f2file,tb->ninput,"pair:f2file");
double ep0 = - tb->ffile[0];
double epn = - tb->ffile[tb->ninput-1];
spline(tb->rfile,tb->efile,tb->ninput,ep0,epn,tb->e2file);
if (tb->fpflag == 0) {
tb->fplo = (tb->ffile[1] - tb->ffile[0]) / (tb->rfile[1] - tb->rfile[0]);
tb->fphi = (tb->ffile[tb->ninput-1] - tb->ffile[tb->ninput-2]) /
(tb->rfile[tb->ninput-1] - tb->rfile[tb->ninput-2]);
}
double fp0 = tb->fplo;
double fpn = tb->fphi;
spline(tb->rfile,tb->ffile,tb->ninput,fp0,fpn,tb->f2file);
}
/* ----------------------------------------------------------------------
extract attributes from parameter line in table section
format of line: N value R/RSQ/BITMAP lo hi FP fplo fphi
N is required, other params are optional
------------------------------------------------------------------------- */
template<class DeviceType>
void PairTableKokkos<DeviceType>::param_extract(Table *tb, char *line)
{
tb->ninput = 0;
tb->rflag = NONE;
tb->fpflag = 0;
char *word = strtok(line," \t\n\r\f");
while (word) {
if (strcmp(word,"N") == 0) {
word = strtok(NULL," \t\n\r\f");
tb->ninput = atoi(word);
} else if (strcmp(word,"R") == 0 || strcmp(word,"RSQ") == 0 ||
strcmp(word,"BITMAP") == 0) {
if (strcmp(word,"R") == 0) tb->rflag = RLINEAR;
else if (strcmp(word,"RSQ") == 0) tb->rflag = RSQ;
else if (strcmp(word,"BITMAP") == 0) tb->rflag = BMP;
word = strtok(NULL," \t\n\r\f");
tb->rlo = atof(word);
word = strtok(NULL," \t\n\r\f");
tb->rhi = atof(word);
} else if (strcmp(word,"FP") == 0) {
tb->fpflag = 1;
word = strtok(NULL," \t\n\r\f");
tb->fplo = atof(word);
word = strtok(NULL," \t\n\r\f");
tb->fphi = atof(word);
} else {
error->one(FLERR,"Invalid keyword in pair table parameters");
}
word = strtok(NULL," \t\n\r\f");
}
if (tb->ninput == 0) error->one(FLERR,"Pair table parameters did not set N");
}
/* ----------------------------------------------------------------------
compute r,e,f vectors from splined values
------------------------------------------------------------------------- */
@ -713,334 +431,7 @@ template<class DeviceType>
void PairTableKokkos<DeviceType>::compute_table(Table *tb)
{
update_table = 1;
int tlm1 = tablength-1;
// inner = inner table bound
// cut = outer table bound
// delta = table spacing in rsq for N-1 bins
double inner;
if (tb->rflag) inner = tb->rlo;
else inner = tb->rfile[0];
tb->innersq = inner*inner;
tb->delta = (tb->cut*tb->cut - tb->innersq) / tlm1;
tb->invdelta = 1.0/tb->delta;
// direct lookup tables
// N-1 evenly spaced bins in rsq from inner to cut
// e,f = value at midpt of bin
// e,f are N-1 in length since store 1 value at bin midpt
// f is converted to f/r when stored in f[i]
// e,f are never a match to read-in values, always computed via spline interp
if (tabstyle == LOOKUP) {
memory->create(tb->e,tlm1,"pair:e");
memory->create(tb->f,tlm1,"pair:f");
double r,rsq;
for (int i = 0; i < tlm1; i++) {
rsq = tb->innersq + (i+0.5)*tb->delta;
r = sqrt(rsq);
tb->e[i] = splint(tb->rfile,tb->efile,tb->e2file,tb->ninput,r);
tb->f[i] = splint(tb->rfile,tb->ffile,tb->f2file,tb->ninput,r)/r;
}
}
// linear tables
// N-1 evenly spaced bins in rsq from inner to cut
// rsq,e,f = value at lower edge of bin
// de,df values = delta from lower edge to upper edge of bin
// rsq,e,f are N in length so de,df arrays can compute difference
// f is converted to f/r when stored in f[i]
// e,f can match read-in values, else compute via spline interp
if (tabstyle == LINEAR) {
memory->create(tb->rsq,tablength,"pair:rsq");
memory->create(tb->e,tablength,"pair:e");
memory->create(tb->f,tablength,"pair:f");
memory->create(tb->de,tlm1,"pair:de");
memory->create(tb->df,tlm1,"pair:df");
double r,rsq;
for (int i = 0; i < tablength; i++) {
rsq = tb->innersq + i*tb->delta;
r = sqrt(rsq);
tb->rsq[i] = rsq;
if (tb->match) {
tb->e[i] = tb->efile[i];
tb->f[i] = tb->ffile[i]/r;
} else {
tb->e[i] = splint(tb->rfile,tb->efile,tb->e2file,tb->ninput,r);
tb->f[i] = splint(tb->rfile,tb->ffile,tb->f2file,tb->ninput,r)/r;
}
}
for (int i = 0; i < tlm1; i++) {
tb->de[i] = tb->e[i+1] - tb->e[i];
tb->df[i] = tb->f[i+1] - tb->f[i];
}
}
// cubic spline tables
// N-1 evenly spaced bins in rsq from inner to cut
// rsq,e,f = value at lower edge of bin
// e2,f2 = spline coefficient for each bin
// rsq,e,f,e2,f2 are N in length so have N-1 spline bins
// f is converted to f/r after e is splined
// e,f can match read-in values, else compute via spline interp
if (tabstyle == SPLINE) {
memory->create(tb->rsq,tablength,"pair:rsq");
memory->create(tb->e,tablength,"pair:e");
memory->create(tb->f,tablength,"pair:f");
memory->create(tb->e2,tablength,"pair:e2");
memory->create(tb->f2,tablength,"pair:f2");
tb->deltasq6 = tb->delta*tb->delta / 6.0;
double r,rsq;
for (int i = 0; i < tablength; i++) {
rsq = tb->innersq + i*tb->delta;
r = sqrt(rsq);
tb->rsq[i] = rsq;
if (tb->match) {
tb->e[i] = tb->efile[i];
tb->f[i] = tb->ffile[i]/r;
} else {
tb->e[i] = splint(tb->rfile,tb->efile,tb->e2file,tb->ninput,r);
tb->f[i] = splint(tb->rfile,tb->ffile,tb->f2file,tb->ninput,r);
}
}
// ep0,epn = dh/dg at inner and at cut
// h(r) = e(r) and g(r) = r^2
// dh/dg = (de/dr) / 2r = -f/2r
double ep0 = - tb->f[0] / (2.0 * sqrt(tb->innersq));
double epn = - tb->f[tlm1] / (2.0 * tb->cut);
spline(tb->rsq,tb->e,tablength,ep0,epn,tb->e2);
// fp0,fpn = dh/dg at inner and at cut
// h(r) = f(r)/r and g(r) = r^2
// dh/dg = (1/r df/dr - f/r^2) / 2r
// dh/dg in secant approx = (f(r2)/r2 - f(r1)/r1) / (g(r2) - g(r1))
double fp0,fpn;
double secant_factor = 0.1;
if (tb->fpflag) fp0 = (tb->fplo/sqrt(tb->innersq) - tb->f[0]/tb->innersq) /
(2.0 * sqrt(tb->innersq));
else {
double rsq1 = tb->innersq;
double rsq2 = rsq1 + secant_factor*tb->delta;
fp0 = (splint(tb->rfile,tb->ffile,tb->f2file,tb->ninput,sqrt(rsq2)) /
sqrt(rsq2) - tb->f[0] / sqrt(rsq1)) / (secant_factor*tb->delta);
}
if (tb->fpflag && tb->cut == tb->rfile[tb->ninput-1]) fpn =
(tb->fphi/tb->cut - tb->f[tlm1]/(tb->cut*tb->cut)) / (2.0 * tb->cut);
else {
double rsq2 = tb->cut * tb->cut;
double rsq1 = rsq2 - secant_factor*tb->delta;
fpn = (tb->f[tlm1] / sqrt(rsq2) -
splint(tb->rfile,tb->ffile,tb->f2file,tb->ninput,sqrt(rsq1)) /
sqrt(rsq1)) / (secant_factor*tb->delta);
}
for (int i = 0; i < tablength; i++) tb->f[i] /= sqrt(tb->rsq[i]);
spline(tb->rsq,tb->f,tablength,fp0,fpn,tb->f2);
}
// bitmapped linear tables
// 2^N bins from inner to cut, spaced in bitmapped manner
// f is converted to f/r when stored in f[i]
// e,f can match read-in values, else compute via spline interp
if (tabstyle == BITMAP) {
double r;
union_int_float_t rsq_lookup;
int masklo,maskhi;
// linear lookup tables of length ntable = 2^n
// stored value = value at lower edge of bin
init_bitmap(inner,tb->cut,tablength,masklo,maskhi,tb->nmask,tb->nshiftbits);
int ntable = 1 << tablength;
int ntablem1 = ntable - 1;
memory->create(tb->rsq,ntable,"pair:rsq");
memory->create(tb->e,ntable,"pair:e");
memory->create(tb->f,ntable,"pair:f");
memory->create(tb->de,ntable,"pair:de");
memory->create(tb->df,ntable,"pair:df");
memory->create(tb->drsq,ntable,"pair:drsq");
union_int_float_t minrsq_lookup;
minrsq_lookup.i = 0 << tb->nshiftbits;
minrsq_lookup.i |= maskhi;
for (int i = 0; i < ntable; i++) {
rsq_lookup.i = i << tb->nshiftbits;
rsq_lookup.i |= masklo;
if (rsq_lookup.f < tb->innersq) {
rsq_lookup.i = i << tb->nshiftbits;
rsq_lookup.i |= maskhi;
}
r = sqrtf(rsq_lookup.f);
tb->rsq[i] = rsq_lookup.f;
if (tb->match) {
tb->e[i] = tb->efile[i];
tb->f[i] = tb->ffile[i]/r;
} else {
tb->e[i] = splint(tb->rfile,tb->efile,tb->e2file,tb->ninput,r);
tb->f[i] = splint(tb->rfile,tb->ffile,tb->f2file,tb->ninput,r)/r;
}
minrsq_lookup.f = MIN(minrsq_lookup.f,rsq_lookup.f);
}
tb->innersq = minrsq_lookup.f;
for (int i = 0; i < ntablem1; i++) {
tb->de[i] = tb->e[i+1] - tb->e[i];
tb->df[i] = tb->f[i+1] - tb->f[i];
tb->drsq[i] = 1.0/(tb->rsq[i+1] - tb->rsq[i]);
}
// get the delta values for the last table entries
// tables are connected periodically between 0 and ntablem1
tb->de[ntablem1] = tb->e[0] - tb->e[ntablem1];
tb->df[ntablem1] = tb->f[0] - tb->f[ntablem1];
tb->drsq[ntablem1] = 1.0/(tb->rsq[0] - tb->rsq[ntablem1]);
// get the correct delta values at itablemax
// smallest r is in bin itablemin
// largest r is in bin itablemax, which is itablemin-1,
// or ntablem1 if itablemin=0
// deltas at itablemax only needed if corresponding rsq < cut*cut
// if so, compute deltas between rsq and cut*cut
// if tb->match, data at cut*cut is unavailable, so we'll take
// deltas at itablemax-1 as a good approximation
double e_tmp,f_tmp;
int itablemin = minrsq_lookup.i & tb->nmask;
itablemin >>= tb->nshiftbits;
int itablemax = itablemin - 1;
if (itablemin == 0) itablemax = ntablem1;
int itablemaxm1 = itablemax - 1;
if (itablemax == 0) itablemaxm1 = ntablem1;
rsq_lookup.i = itablemax << tb->nshiftbits;
rsq_lookup.i |= maskhi;
if (rsq_lookup.f < tb->cut*tb->cut) {
if (tb->match) {
tb->de[itablemax] = tb->de[itablemaxm1];
tb->df[itablemax] = tb->df[itablemaxm1];
tb->drsq[itablemax] = tb->drsq[itablemaxm1];
} else {
rsq_lookup.f = tb->cut*tb->cut;
r = sqrtf(rsq_lookup.f);
e_tmp = splint(tb->rfile,tb->efile,tb->e2file,tb->ninput,r);
f_tmp = splint(tb->rfile,tb->ffile,tb->f2file,tb->ninput,r)/r;
tb->de[itablemax] = e_tmp - tb->e[itablemax];
tb->df[itablemax] = f_tmp - tb->f[itablemax];
tb->drsq[itablemax] = 1.0/(rsq_lookup.f - tb->rsq[itablemax]);
}
}
}
}
/* ----------------------------------------------------------------------
set all ptrs in a table to NULL, so can be freed safely
------------------------------------------------------------------------- */
template<class DeviceType>
void PairTableKokkos<DeviceType>::null_table(Table *tb)
{
tb->rfile = tb->efile = tb->ffile = NULL;
tb->e2file = tb->f2file = NULL;
tb->rsq = tb->drsq = tb->e = tb->de = NULL;
tb->f = tb->df = tb->e2 = tb->f2 = NULL;
}
/* ----------------------------------------------------------------------
free all arrays in a table
------------------------------------------------------------------------- */
template<class DeviceType>
void PairTableKokkos<DeviceType>::free_table(Table *tb)
{
memory->destroy(tb->rfile);
memory->destroy(tb->efile);
memory->destroy(tb->ffile);
memory->destroy(tb->e2file);
memory->destroy(tb->f2file);
memory->destroy(tb->rsq);
memory->destroy(tb->drsq);
memory->destroy(tb->e);
memory->destroy(tb->de);
memory->destroy(tb->f);
memory->destroy(tb->df);
memory->destroy(tb->e2);
memory->destroy(tb->f2);
}
/* ----------------------------------------------------------------------
spline and splint routines modified from Numerical Recipes
------------------------------------------------------------------------- */
template<class DeviceType>
void PairTableKokkos<DeviceType>::spline(double *x, double *y, int n,
double yp1, double ypn, double *y2)
{
int i,k;
double p,qn,sig,un;
double *u = new double[n];
if (yp1 > 0.99e30) y2[0] = u[0] = 0.0;
else {
y2[0] = -0.5;
u[0] = (3.0/(x[1]-x[0])) * ((y[1]-y[0]) / (x[1]-x[0]) - yp1);
}
for (i = 1; i < n-1; i++) {
sig = (x[i]-x[i-1]) / (x[i+1]-x[i-1]);
p = sig*y2[i-1] + 2.0;
y2[i] = (sig-1.0) / p;
u[i] = (y[i+1]-y[i]) / (x[i+1]-x[i]) - (y[i]-y[i-1]) / (x[i]-x[i-1]);
u[i] = (6.0*u[i] / (x[i+1]-x[i-1]) - sig*u[i-1]) / p;
}
if (ypn > 0.99e30) qn = un = 0.0;
else {
qn = 0.5;
un = (3.0/(x[n-1]-x[n-2])) * (ypn - (y[n-1]-y[n-2]) / (x[n-1]-x[n-2]));
}
y2[n-1] = (un-qn*u[n-2]) / (qn*y2[n-2] + 1.0);
for (k = n-2; k >= 0; k--) y2[k] = y2[k]*y2[k+1] + u[k];
delete [] u;
}
/* ---------------------------------------------------------------------- */
template<class DeviceType>
double PairTableKokkos<DeviceType>::splint(double *xa, double *ya, double *y2a, int n, double x)
{
int klo,khi,k;
double h,b,a,y;
klo = 0;
khi = n-1;
while (khi-klo > 1) {
k = (khi+klo) >> 1;
if (xa[k] > x) khi = k;
else klo = k;
}
h = xa[khi]-xa[klo];
a = (xa[khi]-x) / h;
b = (x-xa[klo]) / h;
y = a*ya[klo] + b*ya[khi] +
((a*a*a-a)*y2a[klo] + (b*b*b-b)*y2a[khi]) * (h*h)/6.0;
return y;
PairTable::compute_table(tb);
}
template<class DeviceType>

8
src/KOKKOS/pair_table_kokkos.h
View File

@ -54,7 +54,6 @@ class PairTableKokkos : public PairTable {
void compute_style(int, int);
void settings(int, char **);
void coeff(int, char **);
double init_one(int, int);
void init_style();
@ -112,14 +111,7 @@ class PairTableKokkos : public PairTable {
typename ArrayTypes<DeviceType>::t_ffloat_2d d_cutsq;
virtual void allocate();
void param_extract(Table *, char *);
void bcast_table(Table *);
void spline_table(Table *);
void compute_table(Table *);
void null_table(Table *);
void free_table(Table *);
void spline(double *, double *, int, double, double, double *);
double splint(double *, double *, double *, int, double);
typename ArrayTypes<DeviceType>::t_x_array_randomread x;
typename ArrayTypes<DeviceType>::t_x_array_const c_x;

2
src/pair_table.h
View File

@ -63,7 +63,7 @@ class PairTable : public Pair {
void param_extract(Table *, char *);
void bcast_table(Table *);
void spline_table(Table *);
void compute_table(Table *);
virtual void compute_table(Table *);
void null_table(Table *);
void free_table(Table *);
void spline(double *, double *, int, double, double, double *);