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neighbor_cpu.cu
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Created
Sat, Nov 16, 04:34
Size
1 KB
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text/x-c
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Mon, Nov 18, 04:34 (1 d, 23 h)
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blob
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22355166
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rLAMMPS lammps
neighbor_cpu.cu
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// **************************************************************************
// atom.cu
// -------------------
// W. Michael Brown (ORNL)
//
// Device code for handling CPU generated neighbor lists
//
// __________________________________________________________________________
// This file is part of the LAMMPS Accelerator Library (LAMMPS_AL)
// __________________________________________________________________________
//
// begin :
// email : brownw@ornl.gov
// ***************************************************************************/
#ifdef NV_KERNEL
#include "geryon/ucl_nv_kernel.h"
#else
#define GLOBAL_ID_X get_global_id(0)
#endif
__kernel void kernel_unpack(__global int *dev_nbor, __global int *dev_ij,
const int inum) {
// ii indexes the two interacting particles in gi
int ii=GLOBAL_ID_X;
if (ii<inum) {
__global int *nbor=dev_nbor+ii+inum;
int numj=*nbor;
nbor+=inum;
__global int *list=dev_ij+*nbor;
__global int *list_end=list+numj;
for ( ; list<list_end; list++) {
*nbor=*list;
nbor+=inum;
}
} // if ii
}
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