momentum_sgd.py 文件源码

def update_one_gpu(self, param, state):
        cuda.elementwise(
            'T grad, T lr, T momentum',
            'T param, T v',
            '''v = momentum * v - lr * grad;
               param += v;''',
            'momentum_sgd')(param.grad, self.lr, self.momentum,
                            param.data, state['v'])