fix_gravity_cuda_kernel.cu
c191cb296b29lammm-devel

fix_gravity_cuda_kernel.cu
View Options

			/* ----------------------------------------------------------------------
			LAMMPS - Large-scale Atomic/Molecular Massively Parallel Simulator

			Original Version:
			http://lammps.sandia.gov, Sandia National Laboratories
			Steve Plimpton, sjplimp@sandia.gov

			See the README file in the top-level LAMMPS directory.

			-----------------------------------------------------------------------

			USER-CUDA Package and associated modifications:
			https://sourceforge.net/projects/lammpscuda/

			Christian Trott, christian.trott@tu-ilmenau.de
			Lars Winterfeld, lars.winterfeld@tu-ilmenau.de
			Theoretical Physics II, University of Technology Ilmenau, Germany

			See the README file in the USER-CUDA directory.

			This software is distributed under the GNU General Public License.
			------------------------------------------------------------------------- */

			__global__ void Cuda_FixGravityCuda_PostForce_Kernel(int groupbit, F_FLOAT xacc, F_FLOAT yacc, F_FLOAT zacc)
			{
			int i = (blockIdx.x * gridDim.y + blockIdx.y) * blockDim.x + threadIdx.x;

			if(i < _nlocal)
			if(_mask[i] & groupbit) {
			F_FLOAT mass = _rmass_flag ? _rmass[i] : _mass[_type[i]];
			_f[i] += mass * xacc;
			_f[i + 1 * _nmax] += mass * yacc;
			_f[i + 2 * _nmax] += mass * zacc;
			}
			}