[graph-tool] shortest_distance / concurrency / graph view

François Kawala francois.kawala at gmail.com
Mon Oct 10 21:15:27 CEST 2016


Hello thanks for the blazing fast answer! From what I understand, if I
provide a graphView per thread the problem should not occur, is that
correct?

Regards,
F.

Le 10 oct. 2016 19:32, "Tiago de Paula Peixoto" <tiago at skewed.de> a écrit :

> On 10.10.2016 17:28, François wrote:
> > Hello,
> >
> > I suspect the copy_property function not to be thread safe. Remember
> that
> > the issue I observe occurs when I re-use the predecessor map returned
> > by shortest_distance. The copy_property is then called from
> > topology/__init__.py:1441 and the parameter full is None.
>
> I didn't realize all the workers shared a reference to the same graph.
>
> Indeed this can be improved. To be honest, thread safety from the python
> side is something that I often do not pay attention to, since it is almost
> never worth it. But please open an issue in the website to make
> copy_property() thread safe, and I will get around to it.
>
> Best,
> Tiago
>
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> Tiago de Paula Peixoto <[hidden email]
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