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git-svn-id: svn://svn.icms.temple.edu/lammps-ro/trunk@6262 f3b2605a-c512-4ea7-a41b-209d697bcdaa

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sjplimp
2011-05-31 21:09:51 +00:00
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commit 7af10d8e0f
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lib/cuda/fix_viscous_cuda_kernel.cu Normal file
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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_FixViscousCuda_PostForce_Kernel(int groupbit,F_FLOAT* gamma)
{
int i=(blockIdx.x*gridDim.y+blockIdx.y)*blockDim.x+threadIdx.x;
if(i < _nlocal)
if (_mask[i] & groupbit) {
F_FLOAT drag = gamma[_type[i]];
_f[i] -= drag*_v[i];
_f[i+1*_nmax] -= drag*_v[i+1*_nmax];
_f[i+2*_nmax] -= drag*_v[i+2*_nmax];
}
}