XBT_PRIVATE MPI_Comm* smpi_deployment_comm_world(const std::string& instance_id);
XBT_PRIVATE void smpi_deployment_cleanup_instances();
XBT_PRIVATE int smpi_deployment_smpirun(const simgrid::s4u::Engine* e, const std::string& hostfile, int np,
XBT_PRIVATE MPI_Comm* smpi_deployment_comm_world(const std::string& instance_id);
XBT_PRIVATE void smpi_deployment_cleanup_instances();
XBT_PRIVATE int smpi_deployment_smpirun(const simgrid::s4u::Engine* e, const std::string& hostfile, int np,