6.54. CUpti_ActivityMemcpy6
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struct CUpti_ActivityMemcpy6
The activity record for memory copies.
This activity record represents a memory copy (CUPTI_ACTIVITY_KIND_MEMCPY).
Public Members
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CUpti_ActivityKind kind
The activity record kind, must be CUPTI_ACTIVITY_KIND_MEMCPY.
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uint8_t copyKind
The kind of the memory copy, stored as a byte to reduce record size.
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uint8_t srcKind
The source memory kind read by the memory copy, stored as a byte to reduce record size.
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uint8_t dstKind
The destination memory kind read by the memory copy, stored as a byte to reduce record size.
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uint8_t flags
The flags associated with the memory copy.
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uint64_t bytes
The number of bytes transferred by the memory copy.
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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.
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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.
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uint32_t deviceId
The ID of the device where the memory copy is occurring.
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uint32_t contextId
The ID of the context where the memory copy is occurring.
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uint32_t streamId
The ID of the stream where the memory copy is occurring.
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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 API activity record that launched the memory copy.
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uint32_t runtimeCorrelationId
The runtime correlation ID of the memory copy.
Each memory copy is assigned a unique runtime correlation ID that is identical to the correlation ID in the runtime API activity record that launched the memory copy.
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uint32_t pad
Undefined.
Reserved for internal use.
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void *reserved0
Undefined.
Reserved for internal use.
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uint64_t graphNodeId
The unique ID of the graph node that executed this memcpy through graph launch.
This field will be 0 if the memcpy is not done through graph launch.
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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.
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uint32_t channelID
The ID of the HW channel on which the memory copy is occurring.
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CUpti_ChannelType channelType
The type of the channel.
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uint32_t pad2
Reserved for internal use.
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uint64_t copyCount
The total number of memcopy operations traced in this record.
This field is valid for memcpy operations happening using MemcpyBatchAsync APIs in CUDA. In MemcpyBatchAsync APIs, multiple memcpy operations are batched together for optimization purposes based on certain heuristics. For other memcpy operations, this field will be 1.
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CUpti_ActivityKind kind