def execute(self):
        self.total = self.x**2+self.y**2+self.z**2
Set the input / output data of the model
dataset/ETHPy150Open OpenMDAO/OpenMDAO-Framework/openmdao.lib/src/openmdao/lib/drivers/test/test_opt_genetic.py/SphereFunction.execute--crossover with--dataset/ETHPy150Open SheffieldML/GPy/GPy/core/gp.py/GP.set_XY