walberla::gpu::HostFieldAllocator< T, HostAllocFlags > Class Template Reference

Detailed Description

template<typename T, unsigned int HostAllocFlags = gpuHostAllocDefault>
class walberla::gpu::HostFieldAllocator< T, HostAllocFlags >

Allocator that allocates a CPU! field using gpuHostAlloc without padding.

Uses gpuHostAlloc for the allocation - which allocates page-locked memory that is faster to transfer to the GPU. This allocator should be used for CPU fields that are often transferred to GPU and back.

#include <HostFieldAllocator.h>

Inheritance diagram for walberla::gpu::HostFieldAllocator< T, HostAllocFlags >:

Public Member Functions
	~HostFieldAllocator () override=default
T *	allocateMemory (uint_t size0, uint_t size1, uint_t size2, uint_t size3, uint_t &allocSize1, uint_t &allocSize2, uint_t &allocSize3) override
	Same as allocated, without handling of reference counter.
T *	allocateMemory (uint_t size) override
	Same as allocated, without handling of reference counter.
void	deallocate (T *&values) override
	Deallocates memory that has been allocated using allocate()
Public Member Functions inherited from walberla::field::FieldAllocator< T >
virtual	~FieldAllocator ()=default
T *	allocate (uint_t size0, uint_t size1, uint_t size2, uint_t size3, uint_t &allocSize1, uint_t &allocSize2, uint_t &allocSize3)
	Allocate memory for a field of given sizes and initializes reference counter with one.
virtual void	setInnerGhostLayerSize (uint_t)
T *	allocate (uint_t allocSize)
	Allocate memory of the given size.
void	incrementReferenceCount (T *mem)
	Increments the reference count for the given pointer.
bool	decrementReferenceCount (T *mem)
	Decrements the reference count for the given pointer.
uint_t	referenceCount (T *mem) const

Additional Inherited Members
Public Types inherited from walberla::field::FieldAllocator< T >
using	BaseType = std::conditional_t<VectorTrait<T>::F_SIZE!=0, typename VectorTrait<T>::OutputType, T>

Constructor & Destructor Documentation

~HostFieldAllocator()

template<typename T , unsigned int HostAllocFlags = gpuHostAllocDefault>

walberla::gpu::HostFieldAllocator< T, HostAllocFlags >::~HostFieldAllocator ( )

overridedefault

Member Function Documentation

allocateMemory() [1/2]

template<typename T , unsigned int HostAllocFlags = gpuHostAllocDefault>

T * walberla::gpu::HostFieldAllocator< T, HostAllocFlags >::allocateMemory ( uint_t size )

inlineoverridevirtual

Same as allocated, without handling of reference counter.

Implements walberla::field::FieldAllocator< T >.

allocateMemory() [2/2]

template<typename T , unsigned int HostAllocFlags = gpuHostAllocDefault>

T * walberla::gpu::HostFieldAllocator< T, HostAllocFlags >::allocateMemory ( uint_t size0, uint_t size1, uint_t size2, uint_t size3, uint_t & allocSize1, uint_t & allocSize2, uint_t & allocSize3 )

inlineoverridevirtual

Same as allocated, without handling of reference counter.

Implements walberla::field::FieldAllocator< T >.

deallocate()

template<typename T , unsigned int HostAllocFlags = gpuHostAllocDefault>

void walberla::gpu::HostFieldAllocator< T, HostAllocFlags >::deallocate ( T *& values )

inlineoverridevirtual

Deallocates memory that has been allocated using allocate()

Parameters

values

Return value of allocate function()

Implements walberla::field::FieldAllocator< T >.

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

• /builds/administration/walberla-website/walberla/src/gpu/HostFieldAllocator.h