7.69. cudaPointerAttributes

struct cudaPointerAttributes

CUDA pointer attributes.

Public Members

union cudaPointerAttributes::[anonymous] [anonymous]

Locality domain ordinal for device allocations localized to a locality domain, or -1 when the allocation is not localized to a locality domain.

int device

The device against which the memory was allocated or registered.

If the memory type is cudaMemoryTypeDevice then this identifies the device on which the memory referred physically resides. If the memory type is cudaMemoryTypeHost or::cudaMemoryTypeManaged then this identifies the device which was current when the memory was allocated or registered (and if that device is deinitialized then this allocation will vanish with that device’s state).

void *devicePointer

The address which may be dereferenced on the current device to access the memory or NULL if no such address exists.

void *hostPointer

The address which may be dereferenced on the host to access the memory or NULL if no such address exists.

Note

CUDA doesn’t check if unregistered memory is allocated so this field may contain invalid pointer if an invalid pointer has been passed to CUDA.

int localityDomainOrdinal

long reserved[7]

Must be zero.

enum cudaMemoryType type

The type of memory - cudaMemoryTypeUnregistered, cudaMemoryTypeHost, cudaMemoryTypeDevice or cudaMemoryTypeManaged.

long unused