Field of real values on a regular mesh, allocated on a GPU device. More...

#include <RField.h>

Inheritance diagram for Pscf::Prdc::Cuda::RField< D >:

Public Member Functions
	RField ()
	Default constructor.

	RField (IntVec< D > const &meshDimensions)
	Allocating constructor.

	RField (RField< D > const &other)
	Copy constructor.

virtual	~RField ()
	Destructor.

void	allocate (IntVec< D > const &meshDimensions)
	Allocate the underlying C array for data on a regular mesh.

void	associate (DeviceArray< cudaReal > &arr, int beginId, IntVec< D > const &meshDimensions)
	Associate this object with a slice of another DeviceArray.

RField< D > &	operator= (const RField< D > &other)
	Assignment operator, assignment from another RField<D>.

RField< D > &	operator= (const HostDArray< cudaReal > &other)
	Assignment operator, assignment from a HostDArray<cudaReal>.

IntVec< D > const &	meshDimensions () const
	Return mesh dimensions by constant reference.

template<class Archive >
void	serialize (Archive &ar, const unsigned int version)
	Serialize a Field to/from an Archive.

Public Member Functions inherited from Pscf::DeviceArray< cudaReal >
	DeviceArray ()
	Default constructor.

	DeviceArray (int capacity)
	Allocating constructor.

	DeviceArray (DeviceArray< cudaReal > const &other)
	Copy constructor.

virtual	~DeviceArray ()
	Destructor.

void	allocate (int capacity)
	Allocate the underlying C array on the device.

void	associate (DeviceArray< cudaReal > &arr, int beginId, int capacity)
	Associate this object with a slice of a different DeviceArray.

void	deallocate ()
	Dellocate the underlying C array.

void	dissociate ()
	Dissociate this object from the associated array.

virtual DeviceArray< cudaReal > &	operator= (const DeviceArray< cudaReal > &other)
	Assignment operator, assign from another DeviceArray<Data> array.

virtual DeviceArray< cudaReal > &	operator= (const HostDArray< cudaReal > &other)
	Assignment operator, assignment from HostDArray<Data> host array.

int	capacity () const
	Return allocated capacity.

bool	isAllocated () const
	Return true if the array has been allocated, false otherwise.

bool	isOwner () const
	Does this object own the underlying data?

cudaReal *	cArray ()
	Return pointer to underlying C array.

cudaReal const *	cArray () const
	Return const pointer to underlying C array.

Additional Inherited Members
Public Types inherited from Pscf::DeviceArray< cudaReal >
typedef cudaReal	ElementType
	Data type of each element.

Protected Attributes inherited from Pscf::DeviceArray< cudaReal >
cudaReal *	dataPtr_
	Pointer to a C array of Data elements on the GPU device.

int	capacity_
	Allocated size (capacity) of the array.

DeviceArray< cudaReal > const *	ownerPtr_
	Pointer to array that owns this data, if isOwner_ == false.

int	ownerCapacity_
	Capacity of parent array, if isOwner_ == false.

cudaReal const *	ownerDataPtr_
	Const pointer to parent array, if isOwner_ == false.

Detailed Description

template<int D>
class Pscf::Prdc::Cuda::RField< D >

Field of real values on a regular mesh, allocated on a GPU device.

Type cudaReal is float or double, depending on preprocessor macro.

Definition at line 13 of file rpg/fts/perturbation/Perturbation.h.

Constructor & Destructor Documentation

◆ RField() [1/3]

template<int D>

Pscf::Prdc::Cuda::RField< D >::RField ( )

Default constructor.

◆ RField() [2/3]

template<int D>

Pscf::Prdc::Cuda::RField< D >::RField ( IntVec< D > const & meshDimensions )

Allocating constructor.

Allocates memory by calling allocate(meshDimensions) internally.

Parameters

meshDimensions number of grid points in each dimension

Definition at line 32 of file cuda/RField.tpp.

References Pscf::Prdc::Cpu::RField< D >::allocate(), and Pscf::Prdc::Cpu::RField< D >::meshDimensions().

◆ RField() [3/3]

template<int D>

Pscf::Prdc::Cuda::RField< D >::RField ( RField< D > const & other )

Copy constructor.

Allocates new memory and copies all elements by value.

Parameters

other the RField to be copied.

◆ ~RField()

template<int D>

virtual Pscf::Prdc::Cuda::RField< D >::~RField ( )

virtual

Destructor.

Deletes underlying C array, if allocated previously.

Member Function Documentation

◆ allocate()

template<int D>

void Pscf::Prdc::Cuda::RField< D >::allocate ( IntVec< D > const & meshDimensions )

Allocate the underlying C array for data on a regular mesh.

Exceptions

Exception if the RField is already allocated.

Parameters

meshDimensions number of grid points in each dimension

References Pscf::Prdc::Cuda::RField< D >::associate().

◆ associate()

template<int D>

void Pscf::Prdc::Cuda::RField< D >::associate	(	DeviceArray< cudaReal > &	arr,
		int	beginId,
		IntVec< D > const &	meshDimensions )

Associate this object with a slice of another DeviceArray.

Exceptions

Exception if the array is already allocated.

Parameters

arr	parent array that owns the data
beginId	index in the parent array at which this array starts
meshDimensions	number of grid points in each dimension

Definition at line 71 of file cuda/RField.tpp.

References Pscf::DeviceArray< Data >::associate(), and UTIL_CHECK.

Referenced by Pscf::Prdc::Cuda::RField< D >::allocate().

◆ operator=() [1/2]

template<int D>

RField< D > & Pscf::Prdc::Cuda::RField< D >::operator= ( const RField< D > & other )

Assignment operator, assignment from another RField<D>.

Performs a deep copy, by copying all elements of the RHS RField<D> from device memory to device memory, and copying the meshDimensions.

The RHS RField<D> must be allocated on entry. If this LHS object is not allocated, allocate with the required capacity. If the LHS and RHS arrays are both allocated, capacity values must be equal.

Parameters

other the RHS RField

◆ operator=() [2/2]

template<int D>

RField< D > & Pscf::Prdc::Cuda::RField< D >::operator= ( const HostDArray< cudaReal > & other )

Assignment operator, assignment from a HostDArray<cudaReal>.

Performs a deep copy, by copying all elements of the RHS RField<D> from host memory to device memory.

The RHS HostDArray<cudaReal> and LHS RField<D> must both be allocated with equal capacity values on entry.

Parameters

other the RHS HostDArray<cudaReal>

Definition at line 99 of file cuda/RField.tpp.

References Util::Array< Data >::capacity(), Util::DArray< T >::isAllocated(), Pscf::DeviceArray< Data >::operator=(), and UTIL_THROW.

◆ meshDimensions()

template<int D>

IntVec< D > const & Pscf::Prdc::Cuda::RField< D >::meshDimensions ( ) const

Return mesh dimensions by constant reference.

◆ serialize()

template<int D>

template<class Archive >

void Pscf::Prdc::Cuda::RField< D >::serialize	(	Archive &	ar,
		const unsigned int	version )

Serialize a Field to/from an Archive.

Parameters

ar	archive
version	archive version id

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

Public Member Functions

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ RField() [1/3]

◆ RField() [2/3]

◆ RField() [3/3]

◆ ~RField()

Member Function Documentation

◆ allocate()

◆ associate()

◆ operator=() [1/2]

◆ operator=() [2/2]

◆ meshDimensions()

◆ serialize()