Calling Graph() spawns 11 threads. In order to avoid spawning these threads, I found that calling GraphBase() does not spawn them. Should I expect any degradation in performance if I use GraphBase rather than Graph? The only APIs I’m using are add_edges, add_vertices, and topological_sorting` Tha…

[image] Eyal_Dayan: In order to avoid spawning these threads, I found that calling GraphBase() does not spawn them. Why are you concerned about the number of threads in the Python process? I believe these are due to loading of external libraries and their initialization. The normal way to u…

@szhorvat , Thanks for the quick response. [image] szhorvat: Why are you concerned about the number of threads in the Python process? It was raised as a concern in an internal review, and it got me wondering. I tend to agree that the effect if negligible. Investigating a bit further, it see…

Most of igraph is not parallelized yet. The exceptions are: PageRank with the PRPACK method uses OpenMP, and so does the power law fitting. OpenMP must be enabled at compilation time, which will not be the case for all binary distributions. As I recall, it is enabled for the PyPI binaries. You ca…

Threads spawned in Graph init

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Threads spawned in Graph init

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