graphdot.graph.reorder package

graphdot.graph.reorder.rcm(g)[source]

Compute the reverse Cuthill-Mckee permutation of a graph. Note that the method does NOT modify the graph, but rather just returns a permutation vector that can be used by Graph.permute to achieve the actual reordering.

Parameters:g (Graph) – The graph to be reordered.
Returns:perm – Array of permuted node indices.
Return type:numpy.ndarray
graphdot.graph.reorder.pbr(g, partitioner=None)[source]

Compute a partition-based permutation of a graph that minimizes the number of cross-tile messages. Note that the method does NOT modify the graph, but rather just returns a permutation vector that can be used by Graph.permute to achieve the actual reordering.

Parameters:g (graphdot.Graph) – The graph to be reordered.
Returns:perm – Array of permuted node indices.
Return type:numpy.ndarray