kvikio::CudaPageAlignedPinnedAllocator Class Reference

Allocator for page-aligned AND CUDA-registered pinned host memory. More...

#include <bounce_buffer.hpp>

Public Member Functions
void *	allocate (std::size_t size)
	Allocate page-aligned CUDA-registered pinned host memory. More...
void	deallocate (void *buffer, std::size_t size)
	Deallocate memory previously allocated by this allocator. More...

Detailed Description

Allocator for page-aligned AND CUDA-registered pinned host memory.

Combines the benefits of both page alignment (for Direct I/O) and CUDA registration (for efficient host-device transfers). Uses std::aligned_alloc followed by cudaMemHostRegister to achieve both properties.

Note

This is the required allocator for Direct I/O with device memory. Requires a valid CUDA context when allocating.

Definition at line 77 of file bounce_buffer.hpp.

Member Function Documentation

allocate()

void* kvikio::CudaPageAlignedPinnedAllocator::allocate

(

std::size_t

size

)

Allocate page-aligned CUDA-registered pinned host memory.

Parameters

size	Requested size in bytes (will be rounded up to page boundary)

Returns

Pointer to allocated memory

deallocate()

void kvikio::CudaPageAlignedPinnedAllocator::deallocate	(	void *	buffer,
		std::size_t	size
	)

Deallocate memory previously allocated by this allocator.

Parameters

buffer	Pointer to memory to deallocate
size	Size of the allocation (unused, for interface consistency)

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

• bounce_buffer.hpp