Hi everyone, 

I'm interesting in to compute both the diameter and hyperbolicity of large 
graphs (between 10k and 10M of nodes) using SAGE. At the beginning I had 
problems computing the diameter. However I solved the problem using the 
solutions presented in the ticked #15507. Then, I tried to compute the 
hyperbolicity for a random graph with 70000 nodes and 209991 edges. 
However, I received the following error: 

hyperbolicity(graphs.RandomBarabasiAlbert(70000,3))
Exception ValueError: ValueError('The graph backend contains more than 
65535 nodes and we cannot compute the matrix of distances/predecessors on 
something like that !',) in 
'sage.graphs.distances_all_pairs.c_distances_all_pairs' ignored.

Is there any way to solve this problem? I also saw the same problem when I 
tried to compute the distance matrix of the graph. 

Thanks very much. 

Miguel Camelo

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