6.53. CUpti_ActivityMemcpyPtoP3

struct CUpti_ActivityMemcpyPtoP3

The activity record for peer-to-peer memory copies.

(deprecated in CUDA 11.6)

This activity record represents a peer-to-peer memory copy (CUPTI_ACTIVITY_KIND_MEMCPY2).

Public Members

CUpti_ActivityKind kind

The activity record kind, must be CUPTI_ACTIVITY_KIND_MEMCPY2.

uint8_t copyKind

The kind of the memory copy, stored as a byte to reduce record size.

uint8_t srcKind

The source memory kind read by the memory copy, stored as a byte to reduce record size.

uint8_t dstKind

The destination memory kind read by the memory copy, stored as a byte to reduce record size.

uint8_t flags

The flags associated with the memory copy.

uint64_t bytes

The number of bytes transferred by the memory copy.

uint64_t start

The start timestamp for the memory copy, in ns.

A value of 0 for both the start and end timestamps indicates that timestamp information could not be collected for the memory copy.

uint64_t end

The end timestamp for the memory copy, in ns.

A value of 0 for both the start and end timestamps indicates that timestamp information could not be collected for the memory copy.

uint32_t deviceId

The ID of the device where the memory copy is occurring.

uint32_t contextId

The ID of the context where the memory copy is occurring.

uint32_t streamId

The ID of the stream where the memory copy is occurring.

uint32_t srcDeviceId

The ID of the device where memory is being copied from.

uint32_t srcContextId

The ID of the context owning the memory being copied from.

uint32_t dstDeviceId

The ID of the device where memory is being copied to.

uint32_t dstContextId

The ID of the context owning the memory being copied to.

uint32_t correlationId

The correlation ID of the memory copy.

Each memory copy is assigned a unique correlation ID that is identical to the correlation ID in the driver and runtime API activity record that launched the memory copy.

void *reserved0

Undefined.

Reserved for internal use.

uint64_t graphNodeId

The unique ID of the graph node that executed the memcpy through graph launch.

This field will be 0 if memcpy is not done using graph launch.

uint32_t graphId

The unique ID of the graph that executed this memcpy through graph launch.

This field will be 0 if the memcpy is not done through graph launch.

uint32_t padding

Undefined.

Reserved for internal use.