215 lines
10 KiB
C++
215 lines
10 KiB
C++
/***************************************************************************
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hippo_ext.cpp
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-------------------
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Trung Dac Nguyen (Northwestern)
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Functions for LAMMPS access to hippo acceleration routines.
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__________________________________________________________________________
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This file is part of the LAMMPS Accelerator Library (LAMMPS_AL)
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__________________________________________________________________________
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begin :
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email : trung.nguyen@northwestern.edu
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***************************************************************************/
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#include <iostream>
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#include <cassert>
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#include <cmath>
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#include "lal_hippo.h"
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using namespace std;
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using namespace LAMMPS_AL;
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static Hippo<PRECISION,ACC_PRECISION> HIPPOMF;
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// ---------------------------------------------------------------------------
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// Allocate memory on host and device and copy constants to device
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// ---------------------------------------------------------------------------
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int hippo_gpu_init(const int ntypes, const int max_amtype, const int max_amclass,
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const double *host_pdamp, const double *host_thole,
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const double *host_dirdamp, const int *host_amtype2class,
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const double *host_special_repel,
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const double *host_special_disp,
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const double *host_special_mpole,
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const double *host_special_polar_wscale,
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const double *host_special_polar_piscale,
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const double *host_special_polar_pscale,
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const double *host_sizpr, const double *host_dmppr, const double *host_elepr,
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const double *host_csix, const double *host_adisp,
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const double *host_pcore, const double *host_palpha,
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const int nlocal, const int nall, const int max_nbors,
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const int maxspecial, const int maxspecial15,
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const double cell_size, int &gpu_mode, FILE *screen,
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const double polar_dscale, const double polar_uscale,
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int& tep_size) {
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HIPPOMF.clear();
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gpu_mode=HIPPOMF.device->gpu_mode();
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double gpu_split=HIPPOMF.device->particle_split();
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int first_gpu=HIPPOMF.device->first_device();
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int last_gpu=HIPPOMF.device->last_device();
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int world_me=HIPPOMF.device->world_me();
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int gpu_rank=HIPPOMF.device->gpu_rank();
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int procs_per_gpu=HIPPOMF.device->procs_per_gpu();
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tep_size=sizeof(ACC_PRECISION); // tep_size=sizeof(PRECISION);
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HIPPOMF.device->init_message(screen,"HIPPO",first_gpu,last_gpu);
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bool message=false;
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if (HIPPOMF.device->replica_me()==0 && screen)
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message=true;
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if (message) {
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fprintf(screen,"Initializing GPU and compiling on process 0...");
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fflush(screen);
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}
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int init_ok=0;
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if (world_me==0)
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init_ok=HIPPOMF.init(ntypes, max_amtype, max_amclass,
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host_pdamp, host_thole, host_dirdamp,
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host_amtype2class, host_special_repel, host_special_disp,
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host_special_mpole, host_special_polar_wscale,
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host_special_polar_piscale, host_special_polar_pscale,
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host_sizpr, host_dmppr, host_elepr,
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host_csix, host_adisp, host_pcore, host_palpha,
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nlocal, nall, max_nbors,
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maxspecial, maxspecial15, cell_size, gpu_split,
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screen, polar_dscale, polar_uscale);
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HIPPOMF.device->world_barrier();
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if (message)
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fprintf(screen,"Done.\n");
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for (int i=0; i<procs_per_gpu; i++) {
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if (message) {
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if (last_gpu-first_gpu==0)
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fprintf(screen,"Initializing GPU %d on core %d...",first_gpu,i);
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else
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fprintf(screen,"Initializing GPUs %d-%d on core %d...",first_gpu,
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last_gpu,i);
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fflush(screen);
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}
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if (gpu_rank==i && world_me!=0)
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init_ok=HIPPOMF.init(ntypes, max_amtype, max_amclass,
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host_pdamp, host_thole, host_dirdamp,
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host_amtype2class, host_special_repel, host_special_disp,
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host_special_mpole, host_special_polar_wscale,
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host_special_polar_piscale, host_special_polar_pscale,
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host_sizpr, host_dmppr, host_elepr,
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host_csix, host_adisp, host_pcore, host_palpha,
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nlocal, nall, max_nbors,
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maxspecial, maxspecial15, cell_size, gpu_split,
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screen, polar_dscale, polar_uscale);
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HIPPOMF.device->gpu_barrier();
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if (message)
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fprintf(screen,"Done.\n");
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}
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if (message)
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fprintf(screen,"\n");
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if (init_ok==0)
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HIPPOMF.estimate_gpu_overhead();
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return init_ok;
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}
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void hippo_gpu_clear() {
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HIPPOMF.clear();
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}
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int** hippo_gpu_compute_repulsion(const int ago, const int inum_full,
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const int nall, double **host_x, int *host_type,
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int *host_amtype, int *host_amgroup, double **host_rpole,
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double *sublo, double *subhi, tagint *tag, int **nspecial,
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tagint **special, int *nspecial15, tagint** special15,
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const bool eflag, const bool vflag, const bool eatom,
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const bool vatom, int &host_start,
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int **ilist, int **jnum, const double cpu_time,
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bool &success, const double aewald, const double off2,
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double *host_q, double *boxlo, double *prd,
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double cut2, double c0, double c1, double c2,
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double c3, double c4, double c5, void **tep_ptr) {
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return HIPPOMF.compute_repulsion(ago, inum_full, nall, host_x, host_type,
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host_amtype, host_amgroup, host_rpole, sublo, subhi,
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tag, nspecial, special, nspecial15, special15,
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eflag, vflag, eatom, vatom, host_start, ilist, jnum,
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cpu_time, success, aewald, off2, host_q, boxlo, prd,
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cut2, c0, c1, c2, c3, c4, c5, tep_ptr);
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}
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void hippo_gpu_compute_dispersion_real(int *host_amtype, int *host_amgroup,
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double **host_rpole, const double aewald,
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const double off2) {
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HIPPOMF.compute_dispersion_real(host_amtype, host_amgroup, host_rpole,
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aewald, off2);
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}
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int** hippo_gpu_compute_multipole_real(const int ago, const int inum_full,
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const int nall, double **host_x, int *host_type,
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int *host_amtype, int *host_amgroup, double **host_rpole,
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double *host_pval, double *sublo, double *subhi, tagint *tag, int **nspecial,
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tagint **special, int *nspecial15, tagint** special15,
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const bool eflag, const bool vflag, const bool eatom,
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const bool vatom, int &host_start,
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int **ilist, int **jnum, const double cpu_time,
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bool &success, const double aewald, const double felec, const double off2,
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double *host_q, double *boxlo, double *prd, void **tep_ptr) {
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return HIPPOMF.compute_multipole_real(ago, inum_full, nall, host_x, host_type,
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host_amtype, host_amgroup, host_rpole, host_pval, sublo, subhi,
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tag, nspecial, special, nspecial15, special15,
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eflag, vflag, eatom, vatom, host_start, ilist, jnum,
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cpu_time, success, aewald, felec, off2, host_q, boxlo, prd, tep_ptr);
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}
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void hippo_gpu_compute_udirect2b(int *host_amtype, int *host_amgroup, double **host_rpole,
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double **host_uind, double **host_uinp, double *host_pval,
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const double aewald, const double off2, void **fieldp_ptr) {
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HIPPOMF.compute_udirect2b(host_amtype, host_amgroup, host_rpole,
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host_uind, host_uinp, host_pval,
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aewald, off2, fieldp_ptr);
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}
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void hippo_gpu_compute_umutual2b(int *host_amtype, int *host_amgroup, double **host_rpole,
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double **host_uind, double **host_uinp, double *host_pval,
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const double aewald, const double off2, void **fieldp_ptr) {
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HIPPOMF.compute_umutual2b(host_amtype, host_amgroup, host_rpole, host_uind, host_uinp, host_pval,
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aewald, off2, fieldp_ptr);
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}
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void hippo_gpu_update_fieldp(void **fieldp_ptr) {
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HIPPOMF.update_fieldp(fieldp_ptr);
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}
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void hippo_gpu_compute_polar_real(int *host_amtype, int *host_amgroup, double **host_rpole,
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double **host_uind, double **host_uinp, double *host_pval,
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const bool eflag_in, const bool vflag_in,
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const bool eatom, const bool vatom,
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const double aewald, const double felec, const double off2,
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void **tep_ptr) {
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HIPPOMF.compute_polar_real(host_amtype, host_amgroup, host_rpole, host_uind, host_uinp, host_pval,
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eflag_in, vflag_in, eatom, vatom, aewald, felec, off2, tep_ptr);
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}
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void hippo_gpu_precompute_kspace(const int inum_full, const int bsorder,
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double ***host_thetai1, double ***host_thetai2,
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double ***host_thetai3, int** igrid,
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const int nzlo_out, const int nzhi_out,
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const int nylo_out, const int nyhi_out,
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const int nxlo_out, const int nxhi_out) {
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HIPPOMF.precompute_kspace(inum_full, bsorder, host_thetai1, host_thetai2,
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host_thetai3, igrid, nzlo_out, nzhi_out,
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nylo_out, nyhi_out, nxlo_out, nxhi_out);
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}
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void hippo_gpu_fphi_uind(double ****host_grid_brick, void **host_fdip_phi1,
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void **host_fdip_phi2, void **host_fdip_sum_phi) {
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HIPPOMF.compute_fphi_uind(host_grid_brick, host_fdip_phi1, host_fdip_phi2, host_fdip_sum_phi);
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}
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double hippo_gpu_bytes() {
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return HIPPOMF.host_memory_usage();
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}
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