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pppm_cuda.cu
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pppm_cuda.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.
------------------------------------------------------------------------- */
#include "cuda_precision.h"
//#define FFT_CUFFT
#define MY_PREFIX pppm
#include "cuda_shared.h"
#include "cuda_common.h"
#include "pppm_cuda_cu.h"
#include "cuda_runtime.h"
#include <stdio.h>
//#include "crm_cuda_utils.cu"
#define MIN(a,b) ((a) < (b) ? (a) : (b))
#define MAX(a,b) ((a) > (b) ? (a) : (b))
__device__ __constant__ FFT_FLOAT* work1;
__device__ __constant__ FFT_FLOAT* work2;
__device__ __constant__ FFT_FLOAT* work3;
__device__ __constant__ PPPM_FLOAT* greensfn;
__device__ __constant__ PPPM_FLOAT* gf_b;
__device__ __constant__ PPPM_FLOAT* fkx;
__device__ __constant__ PPPM_FLOAT* fky;
__device__ __constant__ PPPM_FLOAT* fkz;
__device__ __constant__ PPPM_FLOAT* vg;
__device__ __constant__ int* part2grid;
__device__ __constant__ PPPM_FLOAT* density_brick;
__device__ __constant__ int* density_brick_int;
__device__ __constant__ PPPM_FLOAT density_intScale;
__device__ __constant__ PPPM_FLOAT* vdx_brick;
__device__ __constant__ PPPM_FLOAT* vdy_brick;
__device__ __constant__ PPPM_FLOAT* vdz_brick;
__device__ __constant__ PPPM_FLOAT* density_fft;
__device__ __constant__ ENERGY_FLOAT* energy;
__device__ __constant__ ENERGY_FLOAT* virial;
__device__ __constant__ int nxlo_in;
__device__ __constant__ int nxhi_in;
__device__ __constant__ int nxlo_out;
__device__ __constant__ int nxhi_out;
__device__ __constant__ int nylo_in;
__device__ __constant__ int nyhi_in;
__device__ __constant__ int nylo_out;
__device__ __constant__ int nyhi_out;
__device__ __constant__ int nzlo_in;
__device__ __constant__ int nzhi_in;
__device__ __constant__ int nzlo_out;
__device__ __constant__ int nzhi_out;
__device__ __constant__ int nxlo_fft;
__device__ __constant__ int nxhi_fft;
__device__ __constant__ int nylo_fft;
__device__ __constant__ int nyhi_fft;
__device__ __constant__ int nzlo_fft;
__device__ __constant__ int nzhi_fft;
__device__ __constant__ int nx_pppm;
__device__ __constant__ int ny_pppm;
__device__ __constant__ int nz_pppm;
__device__ __constant__ int slabflag;
__device__ __constant__ PPPM_FLOAT qqrd2e;
__device__ __constant__ int order;
//__device__ __constant__ float3 sublo;
__device__ __constant__ PPPM_FLOAT* rho_coeff;
__device__ __constant__ int nmax;
__device__ __constant__ int nlocal;
__device__ __constant__ PPPM_FLOAT* debugdata;
__device__ __constant__ PPPM_FLOAT delxinv;
__device__ __constant__ PPPM_FLOAT delyinv;
__device__ __constant__ PPPM_FLOAT delzinv;
__device__ __constant__ int nlower;
__device__ __constant__ int nupper;
__device__ __constant__ PPPM_FLOAT shiftone;
#include "pppm_cuda_kernel.cu"
#include "stdio.h"
void pppm_device_init(void* cu_density_brick, void* cu_vdx_brick, void* cu_vdy_brick, void* cu_vdz_brick, void* cu_density_fft, void* cu_energy, void* cu_virial
,void* cu_work1,void* cu_work2, void* cu_work3,void* cu_greensfn, void* cu_fkx, void* cu_fky, void* cu_fkz, void* cu_vg
,int cu_nxlo_in,int cu_nxhi_in,int cu_nylo_in,int cu_nyhi_in,int cu_nzlo_in,int cu_nzhi_in,int cu_nxlo_out,int cu_nxhi_out,int cu_nylo_out,int cu_nyhi_out,int cu_nzlo_out,int cu_nzhi_out,int cu_nx_pppm,int cu_ny_pppm,int cu_nz_pppm
,int cu_nxlo_fft,int cu_nxhi_fft,int cu_nylo_fft,int cu_nyhi_fft,int cu_nzlo_fft,int cu_nzhi_fft,void* cu_gf_b
,double cu_qqrd2e, int cu_order, void* cu_rho_coeff,void* cu_debugdata,void* cu_density_brick_int,int cu_slabflag
)
{
CUT_CHECK_ERROR("ERROR-CUDA poisson_init Start");
cudaMemcpyToSymbol("density_brick",&cu_density_brick, sizeof(PPPM_FLOAT*));
cudaMemcpyToSymbol("density_brick_int",&cu_density_brick_int, sizeof(PPPM_FLOAT*));
cudaMemcpyToSymbol("vdx_brick",&cu_vdx_brick, sizeof(PPPM_FLOAT*));
cudaMemcpyToSymbol("vdy_brick",&cu_vdy_brick, sizeof(PPPM_FLOAT*));
cudaMemcpyToSymbol("vdz_brick",&cu_vdz_brick, sizeof(PPPM_FLOAT*));
cudaMemcpyToSymbol("density_fft",&cu_density_fft, sizeof(PPPM_FLOAT*));
cudaMemcpyToSymbol("energy",&cu_energy, sizeof(ENERGY_FLOAT*));
cudaMemcpyToSymbol("virial",&cu_virial, sizeof(ENERGY_FLOAT*));
cudaMemcpyToSymbol("nxlo_in",&cu_nxlo_in, sizeof(int));
cudaMemcpyToSymbol("nxhi_in",&cu_nxhi_in, sizeof(int));
cudaMemcpyToSymbol("nxlo_out",&cu_nxlo_out, sizeof(int));
cudaMemcpyToSymbol("nxhi_out",&cu_nxhi_out, sizeof(int));
cudaMemcpyToSymbol("nylo_in",&cu_nylo_in, sizeof(int));
cudaMemcpyToSymbol("nyhi_in",&cu_nyhi_in, sizeof(int));
cudaMemcpyToSymbol("nylo_out",&cu_nylo_out, sizeof(int));
cudaMemcpyToSymbol("nyhi_out",&cu_nyhi_out, sizeof(int));
cudaMemcpyToSymbol("nzlo_in",&cu_nzlo_in, sizeof(int));
cudaMemcpyToSymbol("nzhi_in",&cu_nzhi_in, sizeof(int));
cudaMemcpyToSymbol("nzlo_out",&cu_nzlo_out, sizeof(int));
cudaMemcpyToSymbol("nzhi_out",&cu_nzhi_out, sizeof(int));
cudaMemcpyToSymbol("nxlo_fft",&cu_nxlo_fft, sizeof(int));
cudaMemcpyToSymbol("nxhi_fft",&cu_nxhi_fft, sizeof(int));
cudaMemcpyToSymbol("nylo_fft",&cu_nylo_fft, sizeof(int));
cudaMemcpyToSymbol("nyhi_fft",&cu_nyhi_fft, sizeof(int));
cudaMemcpyToSymbol("nzlo_fft",&cu_nzlo_fft, sizeof(int));
cudaMemcpyToSymbol("nzhi_fft",&cu_nzhi_fft, sizeof(int));
cudaMemcpyToSymbol("slabflag",&cu_slabflag, sizeof(int));
cudaMemcpyToSymbol("nx_pppm",&cu_nx_pppm, sizeof(int));
cudaMemcpyToSymbol("ny_pppm",&cu_ny_pppm, sizeof(int));
cudaMemcpyToSymbol("nz_pppm",&cu_nz_pppm, sizeof(int));
cudaMemcpyToSymbol("work1",&cu_work1, sizeof(FFT_FLOAT*));
cudaMemcpyToSymbol("work2",&cu_work2, sizeof(FFT_FLOAT*));
cudaMemcpyToSymbol("work3",&cu_work3, sizeof(FFT_FLOAT*));
cudaMemcpyToSymbol("greensfn",&cu_greensfn, sizeof(PPPM_FLOAT*));
cudaMemcpyToSymbol("gf_b",&cu_gf_b, sizeof(PPPM_FLOAT*));
cudaMemcpyToSymbol("fkx",&cu_fkx, sizeof(PPPM_FLOAT*));
cudaMemcpyToSymbol("fky",&cu_fky, sizeof(PPPM_FLOAT*));
cudaMemcpyToSymbol("fkz",&cu_fkz, sizeof(PPPM_FLOAT*));
cudaMemcpyToSymbol("vg",&cu_vg, sizeof(PPPM_FLOAT*));
PPPM_FLOAT cu_qqrd2e_a=cu_qqrd2e;
cudaMemcpyToSymbol("qqrd2e",&cu_qqrd2e_a, sizeof(PPPM_FLOAT));
cudaMemcpyToSymbol("order",&cu_order, sizeof(int));
cudaMemcpyToSymbol("rho_coeff",&cu_rho_coeff, sizeof(PPPM_FLOAT*));
cudaMemcpyToSymbol("debugdata",&cu_debugdata, sizeof(PPPM_FLOAT*));
CUT_CHECK_ERROR("ERROR-CUDA poisson_init");
/*if(sizeof(CUDA_FLOAT)==sizeof(float)) printf("PPPMCuda Kernel: Using single precision\n");
#ifdef PPPM_PRECISION
if(sizeof(PPPM_FLOAT)==sizeof(float)) printf("PPPMCuda Kernel: Using single precision for pppm core\n");
if(sizeof(PPPM_FLOAT)==sizeof(double)) printf("PPPMCuda Kernel: Using double precision for pppm core\n");
#endif
#ifdef ENERGY_PRECISION
if(sizeof(ENERGY_FLOAT)==sizeof(float)) printf("PPPMCuda Kernel: Using single precision for energy\n");
if(sizeof(ENERGY_FLOAT)==sizeof(double)) printf("PPPMCuda Kernel: Using double precision for energy\n");
#endif
#ifdef ENERGY_PRECISION
if(sizeof(FFT_FLOAT)==sizeof(float)) printf("PPPMCuda Kernel: Using single precision for fft\n");
if(sizeof(FFT_FLOAT)==sizeof(double)) printf("PPPMCuda Kernel: Using double precision for fft\n");
#endif
#ifdef X_PRECISION
if(sizeof(X_FLOAT)==sizeof(float)) printf("PPPMCuda Kernel: Using single precision for positions\n");
if(sizeof(X_FLOAT)==sizeof(double)) printf("PPPMCuda Kernel: Using double precision for positions\n");
#endif
#ifdef F_PRECISION
if(sizeof(F_FLOAT)==sizeof(float)) printf("PPPMCuda Kernel: Using single precision for forces\n");
if(sizeof(F_FLOAT)==sizeof(double)) printf("PPPMCuda Kernel: Using double precision for forces\n");
#endif*/
}
void pppm_device_init_setup(cuda_shared_data* sdata,PPPM_FLOAT cu_shiftone,PPPM_FLOAT cu_delxinv,PPPM_FLOAT cu_delyinv,PPPM_FLOAT cu_delzinv,int cu_nlower,int cu_nupper)
{
cudaMemcpyToSymbol("delxinv",&cu_delxinv, sizeof(PPPM_FLOAT));
cudaMemcpyToSymbol("delyinv",&cu_delyinv, sizeof(PPPM_FLOAT));
cudaMemcpyToSymbol("delzinv",&cu_delzinv, sizeof(PPPM_FLOAT));
cudaMemcpyToSymbol("shiftone",&cu_shiftone, sizeof(PPPM_FLOAT));
cudaMemcpyToSymbol("nlower",&cu_nlower, sizeof(int));
cudaMemcpyToSymbol("nupper",&cu_nupper, sizeof(int));
cudaMemcpyToSymbol(MY_CONST(sublo) , sdata->domain.sublo, 3*sizeof(X_FLOAT));
cudaMemcpyToSymbol(MY_CONST(subhi) , sdata->domain.subhi, 3*sizeof(X_FLOAT));
cudaMemcpyToSymbol(MY_CONST(boxlo) , sdata->domain.boxlo, 3*sizeof(X_FLOAT));
CUT_CHECK_ERROR("ERROR-CUDA pppm_init_setup");
}
void pppm_device_update(cuda_shared_data* sdata,void* cu_part2grid, int nlocala,int nmaxa)
{
cudaMemcpyToSymbol("part2grid",&cu_part2grid, sizeof(int*));
cudaMemcpyToSymbol(MY_CONST(x) , & sdata->atom.x .dev_data, sizeof(X_FLOAT*));
cudaMemcpyToSymbol(MY_CONST(f) , & sdata->atom.f .dev_data, sizeof(F_FLOAT*));
cudaMemcpyToSymbol(MY_CONST(q) , & sdata->atom.q .dev_data, sizeof(F_FLOAT*));
cudaMemcpyToSymbol(MY_CONST(tag) , & sdata->atom.tag .dev_data, sizeof(int*));
//cudaMemcpyToSymbol(MY_CONST(nlocal) , & sdata->atom.nlocal .dev_data, sizeof(int));
cudaMemcpyToSymbol("nlocal" , &nlocala, sizeof(int));
cudaMemcpyToSymbol("nmax" , &nmaxa, sizeof(int));
CUT_CHECK_ERROR("ERROR-CUDA pppm_device_update");
}
void pppm_update_nlocal(int nlocala)
{
cudaMemcpyToSymbol("nlocal" , &nlocala, sizeof(int));
CUT_CHECK_ERROR("ERROR-CUDA update_nlocal b");
}
void Cuda_PPPM_Setup_fkxyz_vg(int nx_pppma,int ny_pppma,int nz_pppma,PPPM_FLOAT unitkx,PPPM_FLOAT unitky,PPPM_FLOAT unitkz,PPPM_FLOAT g_ewald)
{
dim3 grid;
dim3 threads;
grid.x=nz_pppma;
grid.y=ny_pppma;
grid.z=1;
threads.x=nx_pppma;
threads.y=1;
threads.z=1;
setup_fkxyz_vg<<<grid,threads,0>>>(unitkx,unitky,unitkz,g_ewald);
cudaThreadSynchronize();
CUT_CHECK_ERROR("ERROR-CUDA Cuda_PPPM_Setup_fkxyz_vg ");
}
void Cuda_PPPM_setup_greensfn(int nx_pppma,int ny_pppma,int nz_pppma,PPPM_FLOAT unitkx,PPPM_FLOAT unitky,PPPM_FLOAT unitkz,PPPM_FLOAT g_ewald,
int nbx,int nby,int nbz,PPPM_FLOAT xprd,PPPM_FLOAT yprd,PPPM_FLOAT zprd_slab)
{
dim3 grid;
dim3 threads;
grid.x=nz_pppma;
grid.y=ny_pppma;
grid.z=1;
threads.x=nx_pppma;
threads.y=1;
threads.z=1;
setup_greensfn<<<grid,threads,0>>>(unitkx,unitky,unitkz,g_ewald,nbx,nby,nbz,xprd,yprd, zprd_slab);
cudaThreadSynchronize();
CUT_CHECK_ERROR("ERROR-CUDA Cuda_PPPM_Setup_greensfn ");
}
void poisson_scale(int nx_pppma,int ny_pppma,int nz_pppma)
{
dim3 grid;
dim3 threads;
grid.x=nz_pppma;
grid.y=ny_pppma;
grid.z=1;
threads.x=nx_pppma;
threads.y=1;
threads.z=1;
poisson_scale_kernel<<<grid,threads,0>>>();
CUT_CHECK_ERROR("ERROR-CUDA poisson_scale ");
}
void poisson_xgrad(int nx_pppma,int ny_pppma,int nz_pppma)
{
dim3 grid;
dim3 threads;
grid.x=nz_pppma;
grid.y=ny_pppma;
grid.z=1;
threads.x=nx_pppma;
threads.y=1;
threads.z=1;
poisson_xgrad_kernel<<<grid,threads,0>>>();
CUT_CHECK_ERROR("ERROR-CUDA poisson_xgrad ");
}
void poisson_ygrad(int nx_pppma,int ny_pppma,int nz_pppma)
{
dim3 grid;
dim3 threads;
grid.x=nz_pppma;
grid.y=ny_pppma;
grid.z=1;
threads.x=nx_pppma;
threads.y=1;
threads.z=1;
poisson_ygrad_kernel<<<grid,threads,0>>>();
CUT_CHECK_ERROR("ERROR-CUDA poisson_ygrad ");
}
void poisson_zgrad(int nx_pppma,int ny_pppma,int nz_pppma)
{
dim3 grid;
dim3 threads;
grid.x=nz_pppma;
grid.y=ny_pppma;
grid.z=1;
threads.x=nx_pppma;
threads.y=1;
threads.z=1;
poisson_zgrad_kernel<<<grid,threads,0>>>();
CUT_CHECK_ERROR("ERROR-CUDA poisson_zgrad ");
}
void poisson_vdx_brick(int ihi,int ilo,int jhi,int jlo,int khi,int klo,int nx_pppma,int ny_pppma,int nz_pppma)
{
dim3 grid;
dim3 threads;
grid.x=khi-klo+1;
grid.y=jhi-jlo+1;
grid.z=1;
threads.x=ihi-ilo+1;
threads.y=1;
threads.z=1;
//printf("VDX_BRICK CUDA: %i %i %i\n",grid.x,grid.y,threads.x);
poisson_vdx_brick_kernel<<<grid,threads,0>>>(ilo,jlo,klo);
CUT_CHECK_ERROR("ERROR-CUDA poisson_vdxbrick ");
cudaThreadSynchronize();
}
void poisson_vdy_brick(int ihi,int ilo,int jhi,int jlo,int khi,int klo,int nx_pppm,int ny_pppm,int nz_pppm)
{
dim3 grid;
dim3 threads;
grid.x=khi-klo+1;
grid.y=jhi-jlo+1;
grid.z=1;
threads.x=ihi-ilo+1;
threads.y=1;
threads.z=1;
poisson_vdy_brick_kernel<<<grid,threads,0>>>(ilo,jlo,klo);
CUT_CHECK_ERROR("ERROR-CUDA poisson_vdybrick ");
cudaThreadSynchronize();
}
void poisson_vdz_brick(int ihi,int ilo,int jhi,int jlo,int khi,int klo,int nx_pppm,int ny_pppm,int nz_pppm)
{
dim3 grid;
dim3 threads;
grid.x=khi-klo+1;
grid.y=jhi-jlo+1;
grid.z=1;
threads.x=ihi-ilo+1;
threads.y=1;
threads.z=1;
poisson_vdz_brick_kernel<<<grid,threads,0>>>(ilo,jlo,klo);
CUT_CHECK_ERROR("ERROR-CUDA poisson_vdzbrick ");
cudaThreadSynchronize();
}
void poisson_energy(int nxlo_fft,int nxhi_fft,int nylo_fft,int nyhi_fft,int nzlo_fft,int nzhi_fft,int vflag)
{
//printf("VFLAG_GPU: %i\n",vflag);
CUT_CHECK_ERROR("ERROR-CUDA poisson_energy start ");
dim3 grid;
dim3 threads;
grid.x=nzhi_fft-nzlo_fft+1;
grid.y=nyhi_fft-nylo_fft+1;
grid.z=1;
threads.x=nxhi_fft-nxlo_fft+1;
threads.y=1;
threads.z=1;
poisson_energy_kernel<<<grid,threads,threads.x*sizeof(ENERGY_FLOAT)>>>(nxlo_fft,nylo_fft,nzlo_fft,vflag);
cudaThreadSynchronize();
CUT_CHECK_ERROR("ERROR-CUDA poisson_energy end ");
}
ENERGY_FLOAT sum_energy(void* cu_virial,void* cu_energy,int nx_pppma,int ny_pppma,int nz_pppma,int vflag,ENERGY_FLOAT* cpu_virial)
{
ENERGY_FLOAT host_energy=0;
dim3 grid;
dim3 threads;
grid.x=nz_pppma;
grid.y=1;
grid.z=1;
threads.x=ny_pppma;
threads.y=1;
threads.z=1;
sum_energy_kernel1<<<grid,threads,ny_pppma*sizeof(ENERGY_FLOAT)>>>(vflag);
cudaThreadSynchronize();
CUT_CHECK_ERROR("ERROR-CUDA sumenergy_kernel1 ");
grid.x=1;
grid.y=1;
grid.z=1;
threads.x=nz_pppma;
threads.y=1;
threads.z=1;
sum_energy_kernel2<<<grid,threads,nz_pppma*sizeof(ENERGY_FLOAT)>>>(vflag);
cudaThreadSynchronize();
CUT_CHECK_ERROR("ERROR-CUDA sumenergy_kernel2 ");
cudaMemcpy((void*) (&host_energy), cu_energy, sizeof(ENERGY_FLOAT),cudaMemcpyDeviceToHost);
if(vflag)
cudaMemcpy((void*) cpu_virial, (void*) cu_virial, 6*sizeof(ENERGY_FLOAT),cudaMemcpyDeviceToHost);
CUT_CHECK_ERROR("ERROR-CUDA sumenergy_memcopy");
return host_energy;
}
void cuda_make_rho(cuda_shared_data* sdata,void* flag,PPPM_FLOAT* cu_density_intScale,int ihi,int ilo,int jhi,int jlo,int khi,int klo,void* cu_density_brick,void* cu_density_brick_int)
{
CUT_CHECK_ERROR("cuda_make_rho begin");
dim3 grid,threads;
int cpu_flag[3];
grid.x=(sdata->atom.nlocal+31)/32;
grid.y=1;
grid.z=1;
threads.x=32;
threads.y=1;
threads.z=1;
int sharedmemsize=(32+32*(sdata->pppm.nupper-sdata->pppm.nlower+1)+sdata->pppm.order*(sdata->pppm.order/2-(1-sdata->pppm.order)/2+1))*sizeof(PPPM_FLOAT);
do
{
cpu_flag[0]=0;
cpu_flag[1]=0;
cpu_flag[2]=0;
cudaMemcpyToSymbol("density_intScale",cu_density_intScale,sizeof(PPPM_FLOAT*));
CUT_CHECK_ERROR("ERROR-CUDA make_rho pre Z");
cudaMemset(flag,0,3*sizeof(int));
CUT_CHECK_ERROR("ERROR-CUDA make_rho pre A");
cudaMemset(cu_density_brick,0,(khi-klo+1)*(jhi-jlo+1)*(ihi-ilo+1)*sizeof(PPPM_FLOAT));
CUT_CHECK_ERROR("ERROR-CUDA make_rho pre B");
cudaMemset(cu_density_brick_int,0,(khi-klo+1)*(jhi-jlo+1)*(ihi-ilo+1)*sizeof(int));
CUT_CHECK_ERROR("ERROR-CUDA make_rho pre C");
make_rho_kernel<<<grid,threads,sharedmemsize>>>((int*) flag,32/(sdata->pppm.nupper-sdata->pppm.nlower+1));
cudaThreadSynchronize();
CUT_CHECK_ERROR("ERROR-CUDA make_rho A");
cudaMemcpy((void*) &cpu_flag, flag, 3*sizeof(int),cudaMemcpyDeviceToHost);
if(cpu_flag[0]!=0) {(*cu_density_intScale)/=2; MYDBG(printf("PPPM_Cuda::cuda_make_rho: Decrease cu_density_intScale to: %e\n",*cu_density_intScale);)}
if((cpu_flag[0]==0)&&(cpu_flag[1]==0)) {(*cu_density_intScale)*=2; MYDBG(printf("PPPM_Cuda::cuda_make_rho: Increase cu_density_intScale to: %e\n",*cu_density_intScale);)}
/* if((*cu_density_intScale)>0xe0000000)
{
printf("Error Scaling\n");
cpu_flag[0]=0;
cpu_flag[1]=1;
}*/
CUT_CHECK_ERROR("ERROR-CUDA make_rho B");
} while((cpu_flag[0]!=0)||(cpu_flag[1]==0));
grid.x=khi-klo+1;
grid.y=jhi-jlo+1;
threads.x=ihi-ilo+1;
scale_rho_kernel<<<grid,threads,0>>>();
cudaThreadSynchronize();
CUT_CHECK_ERROR("ERROR-CUDA make_rho_scale");
}
int cuda_particle_map(cuda_shared_data* sdata,void* flag)
{
dim3 grid,threads;
int cpu_flag;
grid.x=(sdata->atom.nlocal+31)/32;
grid.y=1;
grid.z=1;
threads.x=32;
threads.y=1;
threads.z=1;
CUT_CHECK_ERROR("ERROR-CUDA particla_map ..pre");
particle_map_kernel<<<grid,threads,0>>>((int*) flag);
cudaThreadSynchronize();
CUT_CHECK_ERROR("ERROR-CUDA particla_map a");
cudaMemcpy((void*) &cpu_flag, flag, sizeof(int),cudaMemcpyDeviceToHost);
CUT_CHECK_ERROR("ERROR-CUDA particla_map b");
return cpu_flag;
}
void cuda_fieldforce(cuda_shared_data* sdata,void* flag)
{
dim3 grid,threads;
grid.x=(sdata->atom.nlocal+31)/32;
grid.y=1;
grid.z=1;
threads.x=32;
threads.y=1;
threads.z=1;
int sharedmemsize=(32+3*32*(sdata->pppm.nupper-sdata->pppm.nlower+1)+sdata->pppm.order*(sdata->pppm.order/2-(1-sdata->pppm.order)/2+1))*sizeof(PPPM_FLOAT);
fieldforce_kernel<<<grid,threads,sharedmemsize>>>
(sdata->pppm.nupper-sdata->pppm.nlower+1,32/(sdata->pppm.nupper-sdata->pppm.nlower+1),(int*) flag);
cudaThreadSynchronize();
CUT_CHECK_ERROR("ERROR-CUDA fieldforce");
}
double cuda_slabcorr_energy(cuda_shared_data* sdata, ENERGY_FLOAT* buf, ENERGY_FLOAT* dev_buf)
{
dim3 grid,threads;
grid.x=(sdata->atom.nlocal+31)/32;
grid.y=1;
grid.z=1;
threads.x=32;
threads.y=1;
threads.z=1;
slabcorr_energy_kernel<<<grid,threads,32*sizeof(ENERGY_FLOAT)>>>(dev_buf);
cudaThreadSynchronize();
cudaMemcpy((void*) buf, dev_buf, grid.x*sizeof(ENERGY_FLOAT),cudaMemcpyDeviceToHost);
double dipole_all=0.0;
for(int i=0;i<grid.x;i++)
dipole_all+=buf[i];
return dipole_all;
}
void cuda_slabcorr_force(cuda_shared_data* sdata, F_FLOAT ffact)
{
dim3 grid,threads;
grid.x=(sdata->atom.nlocal+31)/32;
grid.y=1;
grid.z=1;
threads.x=32;
threads.y=1;
threads.z=1;
slabcorr_force_kernel<<<grid,threads>>>(ffact);
cudaThreadSynchronize();
}
void sum_virial(double* host_virial)
{
}
void pppm_initfftdata(cuda_shared_data* sdata,PPPM_FLOAT* in,FFT_FLOAT* out)
{
int nslow=sdata->pppm.nzhi_in-sdata->pppm.nzlo_in;
int nmid=sdata->pppm.nyhi_in-sdata->pppm.nylo_in;
int nfast=sdata->pppm.nxhi_in-sdata->pppm.nxlo_in;
int nrimz=MAX(sdata->pppm.nzlo_in-sdata->pppm.nzlo_out,sdata->pppm.nzhi_out-sdata->pppm.nzhi_in);
int nrimy=MAX(sdata->pppm.nylo_in-sdata->pppm.nylo_out,sdata->pppm.nyhi_out-sdata->pppm.nyhi_in);
int nrimx=MAX(sdata->pppm.nxlo_in-sdata->pppm.nxlo_out,sdata->pppm.nxhi_out-sdata->pppm.nxhi_in);
dim3 grid;
grid.x=nslow+1;
grid.y=nmid+1;
grid.z=1;
dim3 threads;
threads.x=nfast+1;
threads.y=1;
threads.z=1;
cudaThreadSynchronize();
initfftdata_core_kernel<<<grid,threads,0>>>(in,out);
cudaThreadSynchronize();
grid.x=nrimz;
grid.y=nmid+1;
threads.x=nfast+1;
initfftdata_z_kernel<<<grid,threads,0>>>(in,out);
cudaThreadSynchronize();
grid.x=nslow+1;
grid.y=nrimy;
threads.x=nfast+1;
initfftdata_y_kernel<<<grid,threads,0>>>(in,out);
cudaThreadSynchronize();
grid.x=nslow+1;
grid.y=nmid+1;
threads.x=nrimx;
initfftdata_x_kernel<<<grid,threads,0>>>(in,out);
cudaThreadSynchronize();
grid.x=nrimz;
grid.y=nrimy;
threads.x=nfast+1;
initfftdata_yz_kernel<<<grid,threads,0>>>(in,out);
cudaThreadSynchronize();
grid.x=nrimz;
grid.y=nmid+1;
threads.x=nrimx;
initfftdata_xz_kernel<<<grid,threads,0>>>(in,out);
cudaThreadSynchronize();
grid.x=nslow+1;
grid.y=nrimy;
threads.x=nrimx;
initfftdata_xy_kernel<<<grid,threads,0>>>(in,out);
cudaThreadSynchronize();
grid.x=nrimz;
grid.y=nrimy;
threads.x=nrimx;
initfftdata_xyz_kernel<<<grid,threads,0>>>(in,out);
cudaThreadSynchronize();
CUT_CHECK_ERROR("ERROR-CUDA initfftdata_kernel");
}

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