SMPI_app_instance_register(smpi_default_instance_name.c_str(), nullptr, rank_counts);
MPI_COMM_WORLD = *smpi_deployment_comm_world(smpi_default_instance_name);
SMPI_app_instance_register(smpi_default_instance_name.c_str(), nullptr, rank_counts);
MPI_COMM_WORLD = *smpi_deployment_comm_world(smpi_default_instance_name);