Hi Hans!
Commenting out the DumpLayerConnections() lines, it also crashes.
In addition, the problem disappears when I reduce the size of the number of neurons or the connection shape (but it is not practical for me).
Hence, if it is only the normalization of the local MPI process, I understand the only way to normalize the overall sum of weights of a particular neuron is to not using MPI? It is impractical for me because I use big networks (several tenths of thousands).
Cheers,
Xavier