'MPI - Send (unordered) map
I am trying to find a way to send an unordered map from one node to another using MPI. The exact data structure I am trying to send is a nested unordered map (std::unordered_map<int, std::unordered_map<int, int>>).
This answer suggests possibly using MPI_Pack/Unpack or defining a custom datatype when sending a hashtable. Can this be used in this situation? How would you yourself approach this problem?
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