7.56. CUgraphEdgeData Struct Reference
[Data types used by CUDA driver]
Optional annotation for edges in a CUDA graph. Note, all edges implicitly have annotations and default to a zero-initialized value if not specified. A zero-initialized struct indicates a standard full serialization of two nodes with memory visibility.
Public Variables
Variables
- unsigned char CUgraphEdgeData::from_port [inherited]
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This indicates when the dependency is triggered from the upstream node on the edge. The meaning is specfic to the node type. A value of 0 in all cases means full completion of the upstream node, with memory visibility to the downstream node or portion thereof (indicated by to_port). Only kernel nodes define non-zero ports. A kernel node can use the following output port types: CU_GRAPH_KERNEL_NODE_PORT_DEFAULT, CU_GRAPH_KERNEL_NODE_PORT_PROGRAMMATIC, or CU_GRAPH_KERNEL_NODE_PORT_LAUNCH_ORDER.
- unsigned char CUgraphEdgeData::reserved[5] [inherited]
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These bytes are unused and must be zeroed. This ensures compatibility if additional fields are added in the future.
- unsigned char CUgraphEdgeData::to_port [inherited]
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This indicates what portion of the downstream node is dependent on the upstream node or portion thereof (indicated by from_port). The meaning is specific to the node type. A value of 0 in all cases means the entirety of the downstream node is dependent on the upstream work. Currently no node types define non-zero ports. Accordingly, this field must be set to zero.
- unsigned char CUgraphEdgeData::type [inherited]
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This should be populated with a value from CUgraphDependencyType. (It is typed as char due to compiler-specific layout of bitfields.) See CUgraphDependencyType.