[](const std::string& str) {
_smpi_cfg_host_speed = xbt_parse_get_speed("smpi/host-speed", 1, str, "option smpi/host-speed");
xbt_assert(_smpi_cfg_host_speed > 0.0, "Invalid value (%s) for 'smpi/host-speed': it must be positive.",
[](const std::string& str) {
_smpi_cfg_host_speed = xbt_parse_get_speed("smpi/host-speed", 1, str, "option smpi/host-speed");
xbt_assert(_smpi_cfg_host_speed > 0.0, "Invalid value (%s) for 'smpi/host-speed': it must be positive.",