cuda.bindings._v2.driver.graph_get_edges#

cuda.bindings._v2.driver.graph_get_edges(h_graph)#

graph_get_edges_v2(intptr_t h_graph) -> tuple

Returns a graph’s dependency edges.

Returns a list of h_graph's dependency edges. Edges are returned via corresponding indices in from, to and edge_data; that is, the node in to[i] has a dependency on the node in from[i] with data edge_data[i]. from and to may both be NULL, in which case this function only returns the number of edges in num_edges. Otherwise, num_edges entries will be filled in. If num_edges is higher than the actual number of edges, the remaining entries in from and to will be set to NULL, and the number of edges actually returned will be written to num_edges. edge_data may alone be NULL, in which case the edges must all have default (zeroed) edge data. Attempting a lossy query via NULL edge_data will result in CUDA_ERROR_LOSSY_QUERY. If edge_data is non-NULL then from and to must be as well.

Parameters:

h_graph (intptr_t) – Graph to get the edges from.

Returns:

intptr_t: Location to return edge endpoints.
intptr_t: Location to return edge endpoints.
CUgraphEdgeData: Optional location to return edge data.

Return type:

A 3-tuple containing