fix_temp_rescale_limit_cuda_kernel.cu
bac07b76cef2lammm-master

fix_temp_rescale_limit_cuda_kernel.cu
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			/* ----------------------------------------------------------------------
			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_FixTempRescaleLimitCuda_EndOfStep_Kernel(int groupbit,V_FLOAT factor,V_FLOAT limit)
			{
			int i=(blockIdx.xgridDim.y+blockIdx.y)blockDim.x+threadIdx.x;
			if(i < _nlocal)
			if (_mask[i] & groupbit) {
			V_FLOAT vx = _v[i];
			V_FLOAT vy = _v[i+_nmax];
			V_FLOAT vz = _v[i+2*_nmax];
			vx*=factor;
			vy*=factor;
			vz*=factor;

			_v[i]=vx>0?min(vx,limit):max(vx,-limit);
			_v[i+_nmax]=vy>0?min(vy,limit):max(vy,-limit);
			_v[i+2*_nmax]=vz>0?min(vz,limit):max(vz,-limit);
			}
			}