utilities.cuh File Reference

#include <cuda_runtime.h>
#include "std_include.h"
#include "gpuarray.h"

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Macros
#define	utilities_CUH__

Functions
template<typename T >
bool	gpu_set_array (T *arr, T value, int N, int maxBlockSize=512)
	set every element of an array to the specified value More...
bool	gpu_dot_dVec_vectors (dVec *d_vec1, dVec *d_vec2, scalar *d_ans, int N)
	(scalar) ans = (dVec) vec1 . vec2 More...
bool	gpu_dVec_times_scalar (dVec *d_vec1, scalar factor, int N)
	(dVec) input *= factor More...
bool	gpu_dVec_times_scalar (dVec *d_vec1, scalar factor, dVec *d_ans, int N)
	(dVec) ans = input * factor More...
bool	gpu_scalar_times_dVec_squared (dVec *d_vec1, scalar *d_scalars, scalar factor, scalar *d_answer, int N)
	ans = a*b[i]*c[i]^2r More...
bool	gpu_dVec_plusEqual_dVec (dVec *d_vec1, dVec *d_vec2, scalar factor, int N, int maxBlockSize=512)
	vec1 += a*vec2 More...
bool	gpu_serial_reduction (scalar *array, scalar *output, int helperIdx, int N)
	A trivial reduction of an array by one thread in serial. Think before you use this. More...
bool	gpu_parallel_reduction (scalar *input, scalar *intermediate, scalar *output, int helperIdx, int N, int block_size)
	A straightforward two-step parallel reduction algorithm with block_size declared. More...
bool	gpu_dVec_dot_products (dVec *input1, dVec *input2, scalar *output, int helperIdx, int N)
	Take two vectors of dVecs and compute the sum of the dot products between them using thrust. More...
bool	gpu_dVec_dot_products (dVec *input1, dVec *input2, scalar *intermediate, scalar *intermediate2, scalar *output, int helperIdx, int N, int block_size)
	Take two vectors of dVecs and compute the sum of the dot products between them. More...
scalar	gpu_gpuarray_dVec_dot_products (GPUArray< dVec > &input1, GPUArray< dVec > &input2, GPUArray< scalar > &intermediate, GPUArray< scalar > &intermediate2, int N=0, int maxBlockSize=512)
	A function of convenience: take the gpuarrays themselves and dot the data. More...
template<class T >
void	reduce (int size, int threads, int blocks, T *d_idata, T *d_odata)
	access cuda sdk reduction6 More...
template<class T >
T	gpuReduction (int n, int numThreads, int numBlocks, int maxThreads, int maxBlocks, T *d_idata, T *d_odata)
	like benchmarkReduce, interfaces with reduce and returns result More...
template<typename T >
bool	gpu_copy_gpuarray (GPUArray< T > &copyInto, GPUArray< T > &copyFrom, int block_size=512)
	copy data into target on the device More...
scalar	host_dVec_dot_products (dVec *input1, dVec *input2, int N)
	Take two vectors of dVecs and compute the sum of the dot products between them on the host. More...
void	host_dVec_plusEqual_dVec (dVec *d_vec1, dVec *d_vec2, scalar factor, int N)
	vec1 += a*vec2... on the host! More...
void	host_dVec_times_scalar (dVec *d_vec1, scalar factor, dVec *d_ans, int N)
	(dVec) ans = input * factor... on the host More...
unsigned int	nextPow2 (unsigned int x)
void	getNumBlocksAndThreads (int n, int maxBlocks, int maxThreads, int &blocks, int &threads)

Detailed Description

A file providing an interface to the relevant cuda calls for some simple GPU array manipulations

Macro Definition Documentation

utilities_CUH__

#define utilities_CUH__