Hi Hans,
I have taken a look at the cpp code implementing DumpLayerConnections(). I have seen that, for every pre-synaptic neuron, it looks for the corresponding connections with all the post-sytnaptic neurons. Would it be faster to do it the other way around? That is, for every post-synaptic, looking for the corresponding pre-synaptic neurons. I was thinking about it because GetConnections() find connections on every MPI rank for every post-synaptic neuron.
If you believe it could bring some speedup, I could try to modify the cpp code.
Thanks a lot in advance,
Xavier