Dear All, I have encountered a problem I cannot go through regarding boost::mpi and shared_ptr. Please consider the following code: class Foo { friend class boost::serialization::access; template<class Archive> void serialize(Archive &ar, const unsigned int version) { //... } }; //... mpi::communicator world; boost::shared_ptr<Foo> pFoo; if (world.rank() == 0) pFoo = boost::shared_ptr<Foo>(new Foo); mpi::broadcast(world, pFoo, 0); //... Now unfortunately this doesn't compile, I get the following error message: /home/jooam/usr/include/boost-1_35/boost/serialization/shared_ptr.hpp: In function 'void boost::serialization::load(Archive&, boost::shared_ptr<U>&, unsigned int) [with Archive = boost::mpi::packed_iarchive, T = Foo]': /home/jooam/usr/include/boost-1_35/boost/serialization/split_free.hpp:58: instantiated from 'static void boost::serialization::free_loader<Archive, T>::invoke(Archive&, T&, unsigned int) [with Archive = boost::mpi::packed_iarchive, T = boost::shared_ptr<Foo>]' /home/jooam/usr/include/boost-1_35/boost/serialization/split_free.hpp:74: instantiated from 'void boost::serialization::split_free(Archive&, T&, unsigned int) [with Archive = boost::mpi::packed_iarchive, T = boost::shared_ptr<Foo>]' /home/jooam/usr/include/boost-1_35/boost/serialization/shared_ptr.hpp:152: instantiated from 'void boost::serialization::serialize(Archive&, boost::shared_ptr<U>&, unsigned int) [with Archive = boost::mpi::packed_iarchive, T = Foo]' /home/jooam/usr/include/boost-1_35/boost/serialization/serialization.hpp:140: instantiated from 'void boost::serialization::serialize_adl(Archive&, T&, unsigned int) [with Archive = boost::mpi::packed_iarchive, T = boost::shared_ptr<Foo>]' /home/jooam/usr/include/boost-1_35/boost/archive/detail/iserializer.hpp:161: instantiated from 'void boost::archive::detail::iserializer<Archive, T>::load_object_data(boost::archive::detail::basic_iarchive&, void*, unsigned int) const [with Archive = boost::mpi::packed_iarchive, T = boost::shared_ptr<Foo>]' /home/jooam/evolearn/src/evolearn.cpp:75: instantiated from here /home/jooam/usr/include/boost-1_35/boost/serialization/shared_ptr.hpp:137: error: 'class boost::mpi::packed_iarchive' has no member named 'reset' Could you tell me please, what I'm doing wrong? I would appreciate any help. Have a nice day, Andras ____________________________________________________________________________________ Don't get soaked. Take a quick peak at the forecast with the Yahoo! Search weather shortcut. http://tools.search.yahoo.com/shortcuts/#loc_weather