auto host_model = std::make_shared<simgrid::kernel::resource::HostL07Model>("Host_Ptask", system);
auto* engine = simgrid::kernel::EngineImpl::get_instance();
engine->add_model(host_model);
auto host_model = std::make_shared<simgrid::kernel::resource::HostL07Model>("Host_Ptask", system);
auto* engine = simgrid::kernel::EngineImpl::get_instance();
engine->add_model(host_model);