hpp::SpectralDatabaseCUDA< T, N > Class Template Reference

#include <spectralUtilsCUDA.h>

Public Member Functions
	SpectralDatabaseCUDA ()
	SpectralDatabaseCUDA (const SpectralDatabase< T > &dbIn, const std::vector< SpectralDatasetID > &dsetIDs)
__device__ T	getIDFTRealD (unsigned int dsetIdx, unsigned int *spatialCoord) const
__device__ T	getIDFTRealDShared (unsigned int dsetIdx, unsigned int *spatialCoord, unsigned int nShared, SpectralCoordCUDA< N > *sharedCoords, SpectralCoeffCUDA< T > *sharedCoeffs) const
	Device IDFTD. More...
T	getIDFTRealH (unsigned int dsetIdx, std::vector< unsigned int > spatialCoord) const
__device__ T *	getGridStarts ()
__device__ T *	getGridSteps ()
__device__ unsigned int *	getGridDims ()
unsigned int	getNDsets () const
unsigned int	getNTermsTypical () const

Private Attributes
unsigned int *	gridDims
std::shared_ptr< unsigned int >	gridDimsSharedPtr
T *	gridStarts
std::shared_ptr< T >	gridStartsSharedPtr
T *	gridSteps
std::shared_ptr< T >	gridStepsSharedPtr
unsigned int	nDsets
unsigned int	nTermsTypical
SpectralDatasetCUDA< T, N > *	dsets
std::shared_ptr< SpectralDatasetCUDA< T, N > >	dsetsSharedPtr
std::vector< std::shared_ptr< SpectralCoordCUDA< N > > >	coordSharedPtrs
std::vector< std::shared_ptr< SpectralCoeffCUDA< T > > >	coeffSharedPtrs

Detailed Description

template<typename T, unsigned int N>
class hpp::SpectralDatabaseCUDA< T, N >

Author

Michael Malahe

Date

04/04/17

Constructor & Destructor Documentation

template<typename T, unsigned int N>

hpp::SpectralDatabaseCUDA< T, N >::SpectralDatabaseCUDA

(

)

template<typename T, unsigned int N>

hpp::SpectralDatabaseCUDA< T, N >::SpectralDatabaseCUDA	(	const SpectralDatabase< T > &	dbIn,
		const std::vector< SpectralDatasetID > &	dsetIDs
	)

Member Function Documentation

template<typename T, unsigned int N>

__device__ unsigned int* hpp::SpectralDatabaseCUDA< T, N >::getGridDims ( )

inline

template<typename T, unsigned int N>

__device__ T* hpp::SpectralDatabaseCUDA< T, N >::getGridStarts ( )

inline

template<typename T, unsigned int N>

__device__ T* hpp::SpectralDatabaseCUDA< T, N >::getGridSteps ( )

inline

template<typename T , unsigned int N>

__device__ T hpp::SpectralDatabaseCUDA< T, N >::getIDFTRealD	(	unsigned int	dsetIdx,
		unsigned int *	spatialCoord
	)		const

template<typename T, unsigned int N>

__device__ T hpp::SpectralDatabaseCUDA< T, N >::getIDFTRealDShared	(	unsigned int	dsetIdx,
		unsigned int *	spatialCoord,
		unsigned int	nShared,
		SpectralCoordCUDA< N > *	sharedCoords,
		SpectralCoeffCUDA< T > *	sharedCoeffs
	)		const

Device IDFTD.

The grid dimension must be a power of two. For performance reasons this is not checked in this function. The particular optimisation is to replace the modulo in the range reduction step with the following bitwise operation trick for powers of two. Suppose we want yx, and x is a power of two: \(x = 2^z\). The binary representation of x has the digit 1 in the z position and zeroes elsewhere. Now \( x - 1 = 2^z - 1 \) has a 0 in the z position and a 1 in every lower bit. If we then take y&(x-1), all of the bits of y above and including the z position represent values that are divisible by x, and are accordingly zeroed in the result. All of the bits below the z position are left intact (being bitwise & with all 1's), leaving us with the remainder.

Parameters

dsetIdx
spatialCoord
nShared
sharedCoords
sharedCoeffs

template<typename T, unsigned int N>

T hpp::SpectralDatabaseCUDA< T, N >::getIDFTRealH	(	unsigned int	dsetIdx,
		std::vector< unsigned int >	spatialCoord
	)		const

template<typename T, unsigned int N>

unsigned int hpp::SpectralDatabaseCUDA< T, N >::getNDsets ( ) const

inline

template<typename T, unsigned int N>

unsigned int hpp::SpectralDatabaseCUDA< T, N >::getNTermsTypical ( ) const

inline

Member Data Documentation

template<typename T, unsigned int N>

std::vector<std::shared_ptr<SpectralCoeffCUDA<T> > > hpp::SpectralDatabaseCUDA< T, N >::coeffSharedPtrs

private

template<typename T, unsigned int N>

std::vector<std::shared_ptr<SpectralCoordCUDA<N> > > hpp::SpectralDatabaseCUDA< T, N >::coordSharedPtrs

private

template<typename T, unsigned int N>

SpectralDatasetCUDA<T,N>* hpp::SpectralDatabaseCUDA< T, N >::dsets

private

template<typename T, unsigned int N>

std::shared_ptr<SpectralDatasetCUDA<T,N> > hpp::SpectralDatabaseCUDA< T, N >::dsetsSharedPtr

private

template<typename T, unsigned int N>

unsigned int* hpp::SpectralDatabaseCUDA< T, N >::gridDims

private

template<typename T, unsigned int N>

std::shared_ptr<unsigned int> hpp::SpectralDatabaseCUDA< T, N >::gridDimsSharedPtr

private

template<typename T, unsigned int N>

T* hpp::SpectralDatabaseCUDA< T, N >::gridStarts

private

template<typename T, unsigned int N>

std::shared_ptr<T> hpp::SpectralDatabaseCUDA< T, N >::gridStartsSharedPtr

private

template<typename T, unsigned int N>

T* hpp::SpectralDatabaseCUDA< T, N >::gridSteps

private

template<typename T, unsigned int N>

std::shared_ptr<T> hpp::SpectralDatabaseCUDA< T, N >::gridStepsSharedPtr

private

template<typename T, unsigned int N>

unsigned int hpp::SpectralDatabaseCUDA< T, N >::nDsets

private

template<typename T, unsigned int N>

unsigned int hpp::SpectralDatabaseCUDA< T, N >::nTermsTypical

private

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The documentation for this class was generated from the following file:

• /home/mmalahe/projects/hpp/code/include/hpp/spectralUtilsCUDA.h