serialization - MPI_Datatype for C++ container -


how can define mpi_datatypes , mpi_ops mpi communication routines can used c++ containers?

in specific case, i'd union (distributed) array of std::set<int>s using mpi_allreduce.

according related questions

it seems requires (un-)serializing container data. in case, size() of each std::set varies widely, , interested in solution not require padding (if possible).


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