cuda::experimental::device_memory_resource

Defined in include/cuda/experimental/__memory_resource/device_memory_resource.cuh

class device_memory_resource : public cuda::experimental::__memory_resource_base

Stream ordered memory resource

device_memory_resource uses cudaMallocFromPoolAsync / cudaFreeAsync for allocation/deallocation. A device_memory_resource is a thin wrapper around a c cudaMemPool_t.

Warning

device_memory_resource does not own the pool and it is the responsibility of the user to ensure that the lifetime of the pool exceeds the lifetime of the device_memory_resource.

Public Functions

inline device_memory_resource()

Default constructs the device_memory_resource using the default cudaMemPool_t of the default device.

Throws

cuda_error – if retrieving the default cudaMemPool_t fails.

inline explicit device_memory_resource(::cuda::experimental::device_ref __device)

Constructs a device_memory_resource using the default cudaMemPool_t of a given device.

Throws

cuda_error – if retrieving the default cudaMemPool_t fails.

device_memory_resource(int) = delete

device_memory_resource(cuda::std::nullptr_t) = delete

inline explicit device_memory_resource(::cudaMemPool_t __pool) noexcept

Constructs the device_memory_resource from a cudaMemPool_t.

Parameters

__pool – The cudaMemPool_t used to allocate memory.

inline explicit device_memory_resource(device_memory_pool &__pool) noexcept

Constructs the device_memory_resource from a device_memory_pool by calling get().

Parameters

__pool – The device_memory_pool used to allocate memory.