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pair_gpu_nbor_shared.cpp
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Fri, Aug 9, 21:35

pair_gpu_nbor_shared.cpp
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/* ----------------------------------------------------------------------
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.
------------------------------------------------------------------------- */
/* ----------------------------------------------------------------------
Contributing authors: Mike Brown (ORNL), brownw@ornl.gov
------------------------------------------------------------------------- */
#include "pair_gpu_nbor_shared.h"
#ifdef USE_OPENCL
#include "pair_gpu_nbor_cl.h"
#else
#include "pair_gpu_nbor_ptx.h"
#include "pair_gpu_build_ptx.h"
#endif
void PairGPUNborShared::clear() {
if (_compiled) {
if (_gpu_nbor) {
k_cell_id.clear();
k_cell_counts.clear();
k_build_nbor.clear();
k_transpose.clear();
k_special.clear();
delete build_program;
} else {
k_nbor.clear();
delete nbor_program;
}
_compiled=false;
}
}
void PairGPUNborShared::compile_kernels(UCL_Device &dev, const bool gpu_nbor) {
if (_compiled)
return;
_gpu_nbor=gpu_nbor;
std::string flags="-cl-fast-relaxed-math -cl-mad-enable";
if (gpu_nbor==false) {
nbor_program=new UCL_Program(dev);
nbor_program->load_string(pair_gpu_nbor_kernel,flags.c_str());
k_nbor.set_function(*nbor_program,"kernel_unpack");
} else {
build_program=new UCL_Program(dev);
#ifdef USE_OPENCL
std::cerr << "CANNOT CURRENTLY USE GPU NEIGHBORING WITH OPENCL\n";
exit(1);
#else
build_program->load_string(pair_gpu_build_kernel,flags.c_str());
#endif
k_cell_id.set_function(*build_program,"calc_cell_id");
k_cell_counts.set_function(*build_program,"kernel_calc_cell_counts");
k_build_nbor.set_function(*build_program,"calc_neigh_list_cell");
k_transpose.set_function(*build_program,"transpose");
k_special.set_function(*build_program,"kernel_special");
neigh_tex.get_texture(*build_program,"neigh_tex");
}
_compiled=true;
}

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