Type Alias cudaGraphEdgeData

pub type cudaGraphEdgeData = cudaGraphEdgeData_st;

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.

Aliased Type

#[repr(C)]
pub struct cudaGraphEdgeData {
    pub from_port: u8,
    pub to_port: u8,
    pub type_: u8,
    pub reserved: [u8; 5],
}

Fields

from_port: u8

< 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 \c to_port).
Only kernel nodes define non-zero ports. A kernel node can use the following output port types: ::cudaGraphKernelNodePortDefault, ::cudaGraphKernelNodePortProgrammatic, or ::cudaGraphKernelNodePortLaunchCompletion.

to_port: u8

< This indicates what portion of the downstream node is dependent on the upstream node or portion thereof (indicated by \c 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.

type_: u8

< This should be populated with a value from ::cudaGraphDependencyType. (It is typed as char due to compiler-specific layout of bitfields.) See ::cudaGraphDependencyType.

reserved: [u8; 5]

< These bytes are unused and must be zeroed. This ensures compatibility if additional fields are added in the future.