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# 7.19. CUpti_ActivityDevice4

struct CUpti_ActivityDevice4

  The activity record for a device.

  (CUDA 11.6 onwards)

  This activity record represents information about a GPU device (CUPTI_ACTIVITY_KIND_DEVICE). Device activity is now reported using the CUpti_ActivityDevice6 activity record.

  Public Members

  CUpti_ActivityKind kind

    The activity record kind, must be CUPTI_ACTIVITY_KIND_DEVICE.

  CUpti_ActivityFlag flags

    The flags associated with the device.

    See also

    CUpti_ActivityFlag

  uint64_t globalMemoryBandwidth

    The global memory bandwidth available on the device, in kBytes/sec.

  uint64_t globalMemorySize

    The amount of global memory on the device, in bytes.

  uint32_t constantMemorySize

    The amount of constant memory on the device, in bytes.

  uint32_t l2CacheSize

    The size of the L2 cache on the device, in bytes.

  uint32_t numThreadsPerWarp

    The number of threads per warp on the device.

  uint32_t coreClockRate

    The core clock rate of the device, in kHz.

  uint32_t numMemcpyEngines

    Number of memory copy engines on the device.

  uint32_t numMultiprocessors

    Number of multiprocessors on the device.

  uint32_t maxIPC

    The maximum “instructions per cycle” possible on each device multiprocessor.

  uint32_t maxWarpsPerMultiprocessor

    Maximum number of warps that can be present on a multiprocessor at any given time.

  uint32_t maxBlocksPerMultiprocessor

    Maximum number of blocks that can be present on a multiprocessor at any given time.

  uint32_t maxSharedMemoryPerMultiprocessor

    Maximum amount of shared memory available per multiprocessor, in bytes.

  uint32_t maxRegistersPerMultiprocessor

    Maximum number of 32-bit registers available per multiprocessor.

  uint32_t maxRegistersPerBlock

    Maximum number of registers that can be allocated to a block.

  uint32_t maxSharedMemoryPerBlock

    Maximum amount of shared memory that can be assigned to a block, in bytes.

  uint32_t maxThreadsPerBlock

    Maximum number of threads allowed in a block.

  uint32_t maxBlockDimX

    Maximum allowed X dimension for a block.

  uint32_t maxBlockDimY

    Maximum allowed Y dimension for a block.

  uint32_t maxBlockDimZ

    Maximum allowed Z dimension for a block.

  uint32_t maxGridDimX

    Maximum allowed X dimension for a grid.

  uint32_t maxGridDimY

    Maximum allowed Y dimension for a grid.

  uint32_t maxGridDimZ

    Maximum allowed Z dimension for a grid.

  uint32_t computeCapabilityMajor

    Compute capability for the device, major number.

  uint32_t computeCapabilityMinor

    Compute capability for the device, minor number.

  uint32_t id

    The device ID.

  uint32_t eccEnabled

    ECC enabled flag for device.

  CUuuid uuid

    The device UUID.

    This value is the globally unique immutable alphanumeric identifier of the device.

  const char *name

    The device name.

    This name is shared across all activity records representing instances of the device, and so should not be modified.

  uint8_t isCudaVisible

    Flag to indicate whether the device is visible to CUDA.

    Users can set the device visibility using CUDA_VISIBLE_DEVICES environment

  uint8_t isMigEnabled

    MIG enabled flag for device.

  uint32_t gpuInstanceId

    GPU Instance id for MIG enabled devices.

    If mig mode is disabled value is set to UINT32_MAX

  uint32_t computeInstanceId

    Compute Instance id for MIG enabled devices.

    If mig mode is disabled value is set to UINT32_MAX

  CUuuid migUuid

    The MIG UUID.

    This value is the globally unique immutable alphanumeric identifier of the device.