extract_transform_v_frontier_incoming_outgoing_e.cuh#

namespace cugraph

Functions

template<typename GraphViewType, typename KeyBucketType, typename EdgeSrcValueInputWrapper, typename EdgeDstValueInputWrapper, typename EdgeValueInputWrapper, typename EdgeOp> dataframe_buffer_type_t<typename detail::edge_op_result_type<GraphViewType, typename KeyBucketType::key_type, EdgeSrcValueInputWrapper, EdgeDstValueInputWrapper, EdgeValueInputWrapper, EdgeOp>::type> extract_transform_v_frontier_incoming_e( raft::handle_t const &handle, GraphViewType const &graph_view, KeyBucketType const &frontier, EdgeSrcValueInputWrapper edge_src_value_input, EdgeDstValueInputWrapper edge_dst_value_input, EdgeValueInputWrapper edge_value_input, EdgeOp e_op, bool do_expensive_check = false )

Iterate over incoming_edges to the current vertex frontier and extract all edge functor outputs.

Template Parameters:

GraphViewType – Type of the passed non-owning graph object.
KeyBucketType – Type of the vertex frontier bucket class which abstracts current (tagged-)vertex frontier.
EdgeSrcValueInputWrapper – Type of the wrapper for edge source property values.
EdgeDstValueInputWrapper – Type of the wrapper for edge destination property values.
EdgeValueInputWrapper – Type of the wrapper for edge property values.
EdgeOp – Type of the quinary edge operator.

Parameters:

handle – RAFT handle object to encapsulate resources (e.g. CUDA stream, communicator, and handles to various CUDA libraries) to run graph algorithms.
graph_view – Non-owning graph object.
frontier – KeyBucketTyep class object for the current vertex frontier.
edge_src_value_input – Wrapper used to access source input property values (for the edge sources assigned to this process in multi-GPU). Use either cugraph::edge_src_property_t::view() (if e_op needs to access source property values) or cugraph::edge_src_dummy_property_t::view() (if e_op does not access source property values). Use update_edge_src_property to fill the wrapper.
edge_dst_value_input – Wrapper used to access destination input property values (for the edge destinations assigned to this process in multi-GPU). Use either cugraph::edge_dst_property_t::view() (if e_op needs to access destination property values) or cugraph::edge_dst_dummy_property_t::view() (if e_op does not access destination property values). Use update_edge_dst_property to fill the wrapper.
edge_value_input – Wrapper used to access edge input property values (for the edges assigned to this process in multi-GPU). Use either cugraph::edge_property_t::view() (if e_op needs to access edge property values) or cugraph::edge_dummy_property_t::view() (if e_op does not access edge property values).
e_op – Quinary operator takes edge (tagged-)source, edge destination, property values for the source, property values for the destination, and property values for the edge and returns a value to be extracted and accumulated.
do_expensive_check – A flag to run expensive checks for input arguments (if set to true).

Returns:

Dataframe buffer object storing extracted and accumulated valid e_op return values.

template<typename GraphViewType, typename KeyBucketType, typename EdgeSrcValueInputWrapper, typename EdgeDstValueInputWrapper, typename EdgeValueInputWrapper, typename EdgeOp> dataframe_buffer_type_t<typename detail::edge_op_result_type<GraphViewType, typename KeyBucketType::key_type, EdgeSrcValueInputWrapper, EdgeDstValueInputWrapper, EdgeValueInputWrapper, EdgeOp>::type> extract_transform_v_frontier_outgoing_e( raft::handle_t const &handle, GraphViewType const &graph_view, KeyBucketType const &frontier, EdgeSrcValueInputWrapper edge_src_value_input, EdgeDstValueInputWrapper edge_dst_value_input, EdgeValueInputWrapper edge_value_input, EdgeOp e_op, bool do_expensive_check = false )

Iterate over outgoing_edges from the current vertex frontier and extract all edge functor outputs.

Template Parameters:

GraphViewType – Type of the passed non-owning graph object.
KeyBucketType – Type of the vertex frontier bucket class which abstracts current (tagged-)vertex frontier.
EdgeSrcValueInputWrapper – Type of the wrapper for edge source property values.
EdgeDstValueInputWrapper – Type of the wrapper for edge destination property values.
EdgeValueInputWrapper – Type of the wrapper for edge property values.
EdgeOp – Type of the quinary edge operator.

Parameters:

handle – RAFT handle object to encapsulate resources (e.g. CUDA stream, communicator, and handles to various CUDA libraries) to run graph algorithms.
graph_view – Non-owning graph object.
frontier – KeyBucketTyep class object for the current vertex frontier.
edge_src_value_input – Wrapper used to access source input property values (for the edge sources assigned to this process in multi-GPU). Use either cugraph::edge_src_property_t::view() (if e_op needs to access source property values) or cugraph::edge_src_dummy_property_t::view() (if e_op does not access source property values). Use update_edge_src_property to fill the wrapper.
edge_dst_value_input – Wrapper used to access destination input property values (for the edge destinations assigned to this process in multi-GPU). Use either cugraph::edge_dst_property_t::view() (if e_op needs to access destination property values) or cugraph::edge_dst_dummy_property_t::view() (if e_op does not access destination property values). Use update_edge_dst_property to fill the wrapper.
edge_value_input – Wrapper used to access edge input property values (for the edges assigned to this process in multi-GPU). Use either cugraph::edge_property_t::view() (if e_op needs to access edge property values) or cugraph::edge_dummy_property_t::view() (if e_op does not access edge property values).
e_op – Quinary operator takes edge (tagged-)source, edge destination, property values for the source, property values for the destination, and property values for the edge and returns a value to be extracted and accumulated.
do_expensive_check – A flag to run expensive checks for input arguments (if set to true).

Returns:

Dataframe buffer object storing extracted and accumulated valid e_op return values.