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pair_buck_kokkos.h
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Tue, Jun 25, 16:59

pair_buck_kokkos.h
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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.
------------------------------------------------------------------------- */
#ifdef PAIR_CLASS
PairStyle(buck/kk,PairBuckKokkos<LMPDeviceType>)
PairStyle(buck/kk/device,PairBuckKokkos<LMPDeviceType>)
PairStyle(buck/kk/host,PairBuckKokkos<LMPHostType>)
#else
#ifndef LMP_PAIR_BUCK_KOKKOS_H
#define LMP_PAIR_BUCK_KOKKOS_H
#include "pair_kokkos.h"
#include "pair_buck.h"
#include "neigh_list_kokkos.h"
namespace LAMMPS_NS {
template<class DeviceType>
class PairBuckKokkos : public PairBuck {
public:
enum {EnabledNeighFlags=FULL|HALFTHREAD|HALF|N2};
enum {COUL_FLAG=0};
typedef DeviceType device_type;
typedef ArrayTypes<DeviceType> AT;
PairBuckKokkos(class LAMMPS *);
~PairBuckKokkos();
void compute(int, int);
void init_style();
double init_one(int, int);
struct params_buck{
KOKKOS_INLINE_FUNCTION
params_buck(){cutsq=0;a=0;c=0;rhoinv=0;buck1=0;buck2=0;offset=0;};
KOKKOS_INLINE_FUNCTION
params_buck(int i){cutsq=0;a=0;c=0;rhoinv=0;buck1=0;buck2=0;offset=0;};
F_FLOAT cutsq,a,c,rhoinv,buck1,buck2,offset;
};
protected:
void cleanup_copy() {}
template<bool STACKPARAMS, class Specialisation>
KOKKOS_INLINE_FUNCTION
F_FLOAT compute_fpair(const F_FLOAT& rsq, const int& i, const int&j, const int& itype, const int& jtype) const;
template<bool STACKPARAMS, class Specialisation>
KOKKOS_INLINE_FUNCTION
F_FLOAT compute_evdwl(const F_FLOAT& rsq, const int& i, const int&j, const int& itype, const int& jtype) const;
template<bool STACKPARAMS, class Specialisation>
KOKKOS_INLINE_FUNCTION
F_FLOAT compute_ecoul(const F_FLOAT& rsq, const int& i, const int&j, const int& itype, const int& jtype) const {
return 0;
}
Kokkos::DualView<params_buck**,Kokkos::LayoutRight,DeviceType> k_params;
typename Kokkos::DualView<params_buck**,Kokkos::LayoutRight,DeviceType>::t_dev_const_um params;
params_buck m_params[MAX_TYPES_STACKPARAMS+1][MAX_TYPES_STACKPARAMS+1]; // hardwired to space for 12 atom types
F_FLOAT m_cutsq[MAX_TYPES_STACKPARAMS+1][MAX_TYPES_STACKPARAMS+1];
typename AT::t_x_array_randomread x;
typename AT::t_x_array c_x;
typename AT::t_f_array f;
typename AT::t_int_1d_randomread type;
typename AT::t_tagint_1d tag;
DAT::tdual_efloat_1d k_eatom;
DAT::tdual_virial_array k_vatom;
typename AT::t_efloat_1d d_eatom;
typename AT::t_virial_array d_vatom;
int newton_pair;
double special_lj[4];
typename AT::tdual_ffloat_2d k_cutsq;
typename AT::t_ffloat_2d d_cutsq;
int neighflag;
int nlocal,nall,eflag,vflag;
void allocate();
friend class PairComputeFunctor<PairBuckKokkos,FULL,true>;
friend class PairComputeFunctor<PairBuckKokkos,HALF,true>;
friend class PairComputeFunctor<PairBuckKokkos,HALFTHREAD,true>;
friend class PairComputeFunctor<PairBuckKokkos,N2,true>;
friend class PairComputeFunctor<PairBuckKokkos,FULL,false>;
friend class PairComputeFunctor<PairBuckKokkos,HALF,false>;
friend class PairComputeFunctor<PairBuckKokkos,HALFTHREAD,false>;
friend class PairComputeFunctor<PairBuckKokkos,N2,false>;
friend EV_FLOAT pair_compute_neighlist<PairBuckKokkos,FULL,void>(PairBuckKokkos*,NeighListKokkos<DeviceType>*);
friend EV_FLOAT pair_compute_neighlist<PairBuckKokkos,HALF,void>(PairBuckKokkos*,NeighListKokkos<DeviceType>*);
friend EV_FLOAT pair_compute_neighlist<PairBuckKokkos,HALFTHREAD,void>(PairBuckKokkos*,NeighListKokkos<DeviceType>*);
friend EV_FLOAT pair_compute_neighlist<PairBuckKokkos,N2,void>(PairBuckKokkos*,NeighListKokkos<DeviceType>*);
friend EV_FLOAT pair_compute<PairBuckKokkos,void>(PairBuckKokkos*,NeighListKokkos<DeviceType>*);
friend void pair_virial_fdotr_compute<PairBuckKokkos>(PairBuckKokkos*);
};
}
#endif
#endif
/* ERROR/WARNING messages:
E: Cannot use Kokkos pair style with rRESPA inner/middle
Self-explanatory.
E: Cannot use chosen neighbor list style with buck/kk
That style is not supported by Kokkos.
*/

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