7.43. CUaccessPolicyWindow_v1

Defined in cuda.h

struct CUaccessPolicyWindow_v1

Specifies an access policy for a window, a contiguous extent of memory beginning at base_ptr and ending at base_ptr + num_bytes.

num_bytes is limited by CU_DEVICE_ATTRIBUTE_MAX_ACCESS_POLICY_WINDOW_SIZE. Partition into many segments and assign segments such that: sum of “hit segments” / window == approx. ratio. sum of “miss segments” / window == approx 1-ratio. Segments and ratio specifications are fitted to the capabilities of the architecture. Accesses in a hit segment apply the hitProp access policy. Accesses in a miss segment apply the missProp access policy.

Public Members

void *base_ptr

Starting address of the access policy window.

CUDA driver may align it.

size_t num_bytes

Size in bytes of the window policy.

CUDA driver may restrict the maximum size and alignment.

float hitRatio

hitRatio specifies percentage of lines assigned hitProp, rest are assigned missProp.

CUaccessProperty hitProp

CUaccessProperty set for hit.

CUaccessProperty missProp

CUaccessProperty set for miss.

Must be either NORMAL or STREAMING