3.41. CUpti_ActivityNvLink Struct Reference

[CUPTI Activity API]

This structure gives capabilities of each logical NVLink connection between two devices, gpu<->gpu or gpu<->CPU which can be used to understand the topology. NVLink information are now reported using the CUpti_ActivityNvLink2 activity record.

Public Variables

uint64_t  bandwidth
uint32_t  domainId
uint32_t  flag
CUpti_ActivityNvLink::@17  idDev0
CUpti_ActivityNvLink::@18  idDev1
uint32_t  index
CUpti_ActivityKind kind
uint32_t  nvlinkVersion
uint32_t  physicalNvLinkCount
int8_t  portDev0[4]
int8_t  portDev1[4]
CUpti_DevType typeDev0
CUpti_DevType typeDev1

Variables

uint64_t CUpti_ActivityNvLink::bandwidth [inherited]

Banwidth of NVLink in kbytes/sec

uint32_t CUpti_ActivityNvLink::domainId [inherited]

Domain ID of NPU. On Linux, this can be queried using lspci.

uint32_t CUpti_ActivityNvLink::flag [inherited]

Flag gives capabilities of the link

See also:

CUpti_LinkFlag

CUpti_ActivityNvLink::@17 CUpti_ActivityNvLink::idDev0 [inherited]

If typeDev0 is CUPTI_DEV_TYPE_GPU, UUID for device 0. CUpti_ActivityDevice2. If typeDev0 is CUPTI_DEV_TYPE_NPU, struct npu for NPU.

CUpti_ActivityNvLink::@18 CUpti_ActivityNvLink::idDev1 [inherited]

If typeDev1 is CUPTI_DEV_TYPE_GPU, UUID for device 1. CUpti_ActivityDevice2. If typeDev1 is CUPTI_DEV_TYPE_NPU, struct npu for NPU.

uint32_t CUpti_ActivityNvLink::index [inherited]

Index of the NPU. First index will always be zero.

CUpti_ActivityKindCUpti_ActivityNvLink::kind [inherited]

The activity record kind, must be CUPTI_ACTIVITY_KIND_NVLINK.

uint32_t CUpti_ActivityNvLink::nvlinkVersion [inherited]

NVLink version.

uint32_t CUpti_ActivityNvLink::physicalNvLinkCount [inherited]

Number of physical NVLinks present between two devices.

int8_t CUpti_ActivityNvLink::portDev0[4] [inherited]

Port numbers for maximum 4 NVLinks connected to device 0. If typeDev0 is CUPTI_DEV_TYPE_NPU, ignore this field. In case of invalid/unknown port number, this field will be set to value CUPTI_NVLINK_INVALID_PORT. This will be used to correlate the metric values to individual physical link and attribute traffic to the logical NVLink in the topology.

int8_t CUpti_ActivityNvLink::portDev1[4] [inherited]

Port numbers for maximum 4 NVLinks connected to device 1. If typeDev1 is CUPTI_DEV_TYPE_NPU, ignore this field. In case of invalid/unknown port number, this field will be set to value CUPTI_NVLINK_INVALID_PORT. This will be used to correlate the metric values to individual physical link and attribute traffic to the logical NVLink in the topology.

CUpti_DevTypeCUpti_ActivityNvLink::typeDev0 [inherited]

Type of device 0 CUpti_DevType

CUpti_DevTypeCUpti_ActivityNvLink::typeDev1 [inherited]

Type of device 1 CUpti_DevType