Thanks Gonzalo for a detailed explanation So what I understand is to change the code in boost to following code : #include <boost/mpi.hpp> #include <iostream> #include <boost/serialization/vector.hpp> namespace mpi = boost::mpi; int main() { mpi::environment env; mpi::communicator world; std::vector<int> my_vector; if (world.rank() == 0) { my_vector.push_back(17); my_vector.push_back(38); world.send(1, 0, my_vector); } else { std::vector<int> my_vector2; my_vector2.reserve(2); world.recv(0, 0, my_vector2); } return 0; } What is the best option in boost to achieve a good performance? I saw in the code of boost/serialization/vector.hpp that they have an optimized version which keeps track of size and uses serialization wrapper of make_array. How can I force boost to use optimized version for serializing? Below is the code from boost/serialization/vector.hpp: // the optimized versions template<class Archive, class U, class Allocator> inline void save( Archive & ar, const std::vector<U, Allocator> &t, const unsigned int /* file_version */, mpl::true_ ){ const collection_size_type count(t.size()); ar << BOOST_SERIALIZATION_NVP(count); if (!t.empty()) ar << make_array(detail::get_data(t),t.size()); } template<class Archive, class U, class Allocator> inline void load( Archive & ar, std::vector<U, Allocator> &t, const unsigned int /* file_version */, mpl::true_ ){ collection_size_type count(t.size()); ar >> BOOST_SERIALIZATION_NVP(count); t.resize(count); unsigned int item_version=0; if(BOOST_SERIALIZATION_VECTOR_VERSIONED(ar.get_library_version())) { ar >> BOOST_SERIALIZATION_NVP(item_version); } if (!t.empty()) ar >> make_array(detail::get_data(t),t.size()); } Or should I skip the boost completely and go to basic MPI commands to send vector as MPI derived data type? Then I should keep in mind what you said about std::unique_ptr and Vect<T> and also reserving memory in recieve buffer at beginning of pragram and reusing it to prevent memopry allocation during send/recieve. How can I reach a good perfomance solution using boost? Thanks -- View this message in context: http://boost.2283326.n4.nabble.com/Performance-optimization-in-Boost-using-s... Sent from the Boost - Users mailing list archive at Nabble.com.