# CUpti_ActivityMemcpyPtoP2 Struct Reference
[CUPTI Activity API]

The activity record for peer-to-peer memory copies. (deprecated in CUDA 11.1). More...

## Data Fields

uint64_t | bytes
uint32_t | contextId
uint8_t | copyKind
uint32_t | correlationId
uint32_t | deviceId
uint32_t | dstContextId
uint32_t | dstDeviceId
uint8_t | dstKind
uint64_t | end
uint8_t | flags
uint64_t | graphNodeId
CUpti_ActivityKind | kind
uint32_t | pad
void * | reserved0
uint32_t | srcContextId
uint32_t | srcDeviceId
uint8_t | srcKind
uint64_t | start
uint32_t | streamId

## Detailed Description

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

## Field Documentation

uint64_t CUpti_ActivityMemcpyPtoP2::bytes

The number of bytes transferred by the memory copy.

uint32_t CUpti_ActivityMemcpyPtoP2::contextId

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

uint8_t CUpti_ActivityMemcpyPtoP2::copyKind

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

See also:
  CUpti_ActivityMemcpyKind

uint32_t CUpti_ActivityMemcpyPtoP2::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.

uint32_t CUpti_ActivityMemcpyPtoP2::deviceId

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

uint32_t CUpti_ActivityMemcpyPtoP2::dstContextId

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

uint32_t CUpti_ActivityMemcpyPtoP2::dstDeviceId

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

uint8_t CUpti_ActivityMemcpyPtoP2::dstKind

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

See also:
  CUpti_ActivityMemoryKind

uint64_t CUpti_ActivityMemcpyPtoP2::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.

uint8_t CUpti_ActivityMemcpyPtoP2::flags

The flags associated with the memory copy.

See also:
  CUpti_ActivityFlag

uint64_t CUpti_ActivityMemcpyPtoP2::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.

CUpti_ActivityKind CUpti_ActivityMemcpyPtoP2::kind

The activity record kind, must be CUPTI_ACTIVITY_KIND_MEMCPY2.

uint32_t CUpti_ActivityMemcpyPtoP2::pad

Undefined. Reserved for internal use.

void* CUpti_ActivityMemcpyPtoP2::reserved0

Undefined. Reserved for internal use.

uint32_t CUpti_ActivityMemcpyPtoP2::srcContextId

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

uint32_t CUpti_ActivityMemcpyPtoP2::srcDeviceId

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

uint8_t CUpti_ActivityMemcpyPtoP2::srcKind

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

See also:
  CUpti_ActivityMemoryKind

uint64_t CUpti_ActivityMemcpyPtoP2::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.

uint32_t CUpti_ActivityMemcpyPtoP2::streamId

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