p3m_gpu_error_cuda.cu File Reference

P3M electrostatics on GPU. More...

#include "p3m_gpu_error.hpp"
#include "cuda/utils.cuh"
#include <utils/math/int_pow.hpp>
#include <utils/math/sinc.hpp>
#include <utils/math/sqr.hpp>
#include <thrust/device_vector.h>
#include <thrust/reduce.h>
#include <cuda.h>
#include <algorithm>
#include <cstddef>

Include dependency graph for p3m_gpu_error_cuda.cu:

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Functions
template<int cao>
static __device__ double	p3m_analytic_cotangent_sum (int n, double mesh_i)
template<int cao>
__global__ void	p3m_k_space_error_gpu_kernel_ik (int3 mesh, double3 meshi, double alpha_L, double *he_q)
double	p3m_k_space_error_gpu (double prefactor, const int *mesh, int cao, int npart, double sum_q2, double alpha_L, const double *box)

Detailed Description

P3M electrostatics on GPU.

The corresponding header file is p3m_gpu_error.hpp.

Definition in file p3m_gpu_error_cuda.cu.

Function Documentation

p3m_analytic_cotangent_sum()

template<int cao>

static __device__ double p3m_analytic_cotangent_sum ( int  n, double  mesh_i  )

static

Todo:

Extend to higher order. This comes from some 1/sin expansion in [23]

Definition at line 54 of file p3m_gpu_error_cuda.cu.

References Utils::pi().

Referenced by dp3m_k_space_error(), and p3m_k_space_error().

p3m_k_space_error_gpu()

double p3m_k_space_error_gpu	(	double	prefactor,
		const int *	mesh,
		int	cao,
		int	npart,
		double	sum_q2,
		double	alpha_L,
		const double *	box
	)

Definition at line 123 of file p3m_gpu_error_cuda.cu.

References block(), and KERNELCALL.

Referenced by p3mgpu_k_space_error().

p3m_k_space_error_gpu_kernel_ik()

template<int cao>

__global__ void p3m_k_space_error_gpu_kernel_ik	(	int3	mesh,
		double3	meshi,
		double	alpha_L,
		double *	he_q
	)

Definition at line 87 of file p3m_gpu_error_cuda.cu.

References Utils::pi(), ROUND_ERROR_PREC, and Utils::sinc().