AtlasG4SyncEventUserInfo Node1 AtlasG4SyncEventUserInfo - m_rng_engine - m_event_factory - m_sync_interface + AtlasG4SyncEventUserInfo() + AthenaEventID() + HepRandomEngine() + EventFactory() + SyncInterface() Node2 AtlasG4EventUserInfo - m_eventContext - m_eventStore - m_theEvent - m_currentPrimaryGenParticle - m_currentGenParticle - m_hitCollectionMap - m_lastProcessedTrackID - m_lastProcessedStep + AtlasG4EventUserInfo() + GetHepMCEvent() + SetHepMCEvent() + GetCurrentPrimaryGenParticle() + SetCurrentPrimaryGenParticle() + GetCurrentGenParticle() + GetCurrentGenParticle() + SetCurrentGenParticle() + GetLastProcessedTrackID() + SetLastProcessedTrackID() and 7 more... + GetEventUserInfo() Node2->Node1 Node3 G4VUserEventInformation     Node3->Node2