[Boost-users] boost mpi message truncated error

Subject: [Boost-users] boost mpi message truncated error
From: Kyle Joseph Berger (Kyle.Berger_at_[hidden])
Date: 2012-12-10 12:20:48

Hello,

I am using boost mpi and I am having issues getting the message truncation error upon receiving a message. It is not always the same message, but it does always happen and I have been unable to figure out why. Here is the code of interest:

//send particles
              for(int i=0;i<world.size();i++)
              {
                     world.isend(i,i,particles_to_be_sent[i]);
              }

              //receive particles
              int receive_counter=0;
              boost::optional<boost::mpi::status> msginfo=world.iprobe(mpi::any_source, world.rank());
              while (receive_counter<world.size())
              {
                     if (msginfo)
                     {
                           world.recv(msginfo->source(),world.rank(),particles_received);
                           for (unsigned int i=0;i<particles_received.size();i++)
                                  {
                                         //add particle to its associated box in the particle grid
                                         particle_grid[particles_received[i].location_number()].insert(pair<int,Particle>(particles_received[i].global_part_num(),particles_received[i]));
                                         //check to see if the particle is contained within the box
                                         if (particles_received[i].position().y()>grid_locations[particles_received[i].location_number()].bottom()
                                                && particles_received[i].position().y()<grid_locations[particles_received[i].location_number()].top()
                                                && particles_received[i].position().x()>grid_locations[particles_received[i].location_number()].west()
                                                && particles_received[i].position().x()<grid_locations[particles_received[i].location_number()].east()
                                                && particles_received[i].position().z()>grid_locations[particles_received[i].location_number()].south()
                                                && particles_received[i].position().z()<grid_locations[particles_received[i].location_number()].north())
                                         {
                                                //if particle is in box, then denote it as such in the particle properties
                                                particle_properties[particles_received[i].global_part_num()].particle_in_box()[particles_received[i].location_number()]=true;
                                         }
                                  }
                           receive_counter++;
                     }
                     msginfo=world.iprobe(mpi::any_source, world.rank());
              }

I have left out variable definitions, but everything has the right type (including sending and receiving the same type-particles_to_be_sent[i] and particles_received are both vector<Particle>, where Particle is a type I've created).

I thought that boost mpi is supposed to take care of making the receive buffer the right size on its own, but something isn't working here. Any help would be appreciated.

Thanks,
Kyle