在AIStUDIo中运行代码，paddle版本是2.2.0，运行环境是CPU，执行代码是：
inp = paddle.to_tensor([1], dtype='float32', stop_gradient=False)
y = paddle.sin(inp)
y_x = paddle.grad(y, inp, create_graph=True, retain_graph=True)
报错：
(NotFound) The Op sin_grad doesn't have any grad op. If you don't intend calculating higher order derivatives, please set create_graph to False.
[Hint: double_grad_node should not be null.] (at /paddle/paddle/fluid/imperative/partial_grad_engine.cc:908)
2条答案
按热度按时间gcuhipw91#
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7kqas0il2#
报错提示sin OP没有二阶梯度计算kernel
如果您只需要计算一阶梯度，可以设置create_graph=False