Created by: liucc09

• 版本、环境信息：    1）PaddlePaddle版本：1.8    2）系统环境：aistudio环境，不管cpu还是gpu都报这个错

错误复现

定位之后发现只要使用了BatchNorm就会报这个错，代码如下：

from paddle.fluid.dygraph.base import to_variable
import paddle.fluid as fluid
from paddle.fluid.dygraph import Sequential,Conv2D,BatchNorm
from paddle.fluid.regularizer import L2Decay
from paddle.fluid.param_attr import ParamAttr

x = np.zeros((8,1,100,100),dtype=np.float32)
conv = Conv2D(
            num_channels=1,
            num_filters=48,
            filter_size=5,
            stride=1,
            padding=2,
            groups=1,
            param_attr=ParamAttr(
                initializer=fluid.initializer.Normal(0., 0.02)),
            bias_attr=False,
            act=None)
batch_norm = BatchNorm(
            num_channels=48,
            is_test=False,
            param_attr=ParamAttr(
                initializer=fluid.initializer.Normal(0., 0.02),
                regularizer=L2Decay(0.)),
            bias_attr=ParamAttr(
                initializer=fluid.initializer.Constant(0.0),
                regularizer=L2Decay(0.))
            )

with fluid.dygraph.guard():
    xv = to_variable(x)
    y1 = conv(xv)
    y2 = batch_norm(y1)

报错内容

---------------------------------------------------------------------------EnforceNotMet Traceback (most recent call last) in 18 act=None) 19 batch_norm = BatchNorm( ---> 20 num_channels=48, 21 #is_test=False, 22 #param_attr=ParamAttr( /opt/conda/envs/python35-paddle120-env/lib/python3.7/site-packages/paddle/fluid/dygraph/nn.py in init(self, num_channels, act, is_test, momentum, epsilon, param_attr, bias_attr, dtype, data_layout, in_place, moving_mean_name, moving_variance_name, do_model_average_for_mean_and_var, use_global_stats, trainable_statistics) 1232 shape=param_shape, 1233 dtype=self._dtype, -> 1234 default_initializer=Constant(1.0)) 1235 self.weight.stop_gradient = use_global_stats and self._param_attr.learning_rate == 0. 1236 /opt/conda/envs/python35-paddle120-env/lib/python3.7/site-packages/paddle/fluid/dygraph/layers.py in create_parameter(self, shape, attr, dtype, is_bias, default_initializer) 260 temp_attr = None 261 return self._helper.create_parameter(temp_attr, shape, dtype, is_bias, --> 262 default_initializer) 263 264 # TODO: Add more parameter list when we need them /opt/conda/envs/python35-paddle120-env/lib/python3.7/site-packages/paddle/fluid/layer_helper_base.py in create_parameter(self, attr, shape, dtype, is_bias, default_initializer, stop_gradient, type) 345 type=type, 346 stop_gradient=stop_gradient, --> 347 **attr._to_kwargs(with_initializer=True)) 348 else: 349 self.startup_program.global_block().create_parameter( /opt/conda/envs/python35-paddle120-env/lib/python3.7/site-packages/paddle/fluid/framework.py in create_parameter(self, *args, **kwargs) 2568 pass 2569 else: -> 2570 initializer(param, self) 2571 param.stop_gradient = False 2572 return param /opt/conda/envs/python35-paddle120-env/lib/python3.7/site-packages/paddle/fluid/initializer.py in call(self, var, block) 145 'force_cpu': self._force_cpu 146 }, --> 147 stop_gradient=True) 148 149 if var.dtype == VarDesc.VarType.FP16: /opt/conda/envs/python35-paddle120-env/lib/python3.7/site-packages/paddle/fluid/framework.py in _prepend_op(self, *args, **kwargs) 2668 kwargs.get("outputs", {}), attrs 2669 if attrs else {}, -> 2670 kwargs.get("stop_gradient", False)) 2671 else: 2672 op_desc = self.desc._prepend_op() /opt/conda/envs/python35-paddle120-env/lib/python3.7/site-packages/paddle/fluid/dygraph/tracer.py in trace_op(self, type, inputs, outputs, attrs, stop_gradient) 41 self.trace(type, inputs, outputs, attrs, 42 framework._current_expected_place(), self._train_mode and ---> 43 not stop_gradient) 44 45 def train_mode(self): EnforceNotMet:

C++ Call Stacks (More useful to developers):

0 std::string paddle::platform::GetTraceBackString<std::string const&>(std::string const&, char const*, int) 1 paddle::platform::EnforceNotMet::EnforceNotMet(std::string const&, char const*, int) 2 paddle::platform::DeviceContextPool::Instance() 3 paddle::operators::FillConstantKernel::Compute(paddle::framework::ExecutionContext const&) const 4 std::Function_handler<void (paddle::framework::ExecutionContext const&), paddle::framework::OpKernelRegistrarFunctor<paddle::platform::CPUPlace, false, 0ul, paddle::operators::FillConstantKernel, paddle::operators::FillConstantKernel, paddle::operators::FillConstantKernel, paddle::operators::FillConstantKernel, paddle::operators::FillConstantKernel, paddle::operators::FillConstantKernelpaddle::platform::float16 >::operator()(char const*, char const*, int) const::{lambda(paddle::framework::ExecutionContext const&)#1 (closed)}>::M_invoke(std::Any_data const&, paddle::framework::ExecutionContext const&) 5 paddle::imperative::PreparedOp::Run(std::map<std::string, std::vector<std::shared_ptrpaddle::imperative::VarBase, std::allocator<std::shared_ptrpaddle::imperative::VarBase > >, std::lessstd::string, std::allocator<std::pair<std::string const, std::vector<std::shared_ptrpaddle::imperative::VarBase, std::allocator<std::shared_ptrpaddle::imperative::VarBase > > > > > const&, std::map<std::string, std::vector<std::shared_ptrpaddle::imperative::VarBase, std::allocator<std::shared_ptrpaddle::imperative::VarBase > >, std::lessstd::string, std::allocator<std::pair<std::string const, std::vector<std::shared_ptrpaddle::imperative::VarBase, std::allocator<std::shared_ptrpaddle::imperative::VarBase > > > > > const&, std::unordered_map<std::string, boost::variant<boost::blank, int, float, std::string, std::vector<int, std::allocator >, std::vector<float, std::allocator >, std::vector<std::string, std::allocatorstd::string >, bool, std::vector<bool, std::allocator >, paddle::framework::BlockDesc*, long, std::vector<paddle::framework::BlockDesc*, std::allocatorpaddle::framework::BlockDesc* >, std::vector<long, std::allocator >, boost::detail::variant::void, boost::detail::variant::void, boost::detail::variant::void, boost::detail::variant::void_, boost::detail::variant::void_, boost::detail::variant::void_, boost::detail::variant::void_>, std::hashstd::string, std::equal_tostd::string, std::allocator<std::pair<std::string const, boost::variant<boost::blank, int, float, std::string, std::vector<int, std::allocator >, std::vector<float, std::allocator >, std::vector<std::string, std::allocatorstd::string >, bool, std::vector<bool, std::allocator >, paddle::framework::BlockDesc*, long, std::vector<paddle::framework::BlockDesc*, std::allocatorpaddle::framework::BlockDesc* >, std::vector<long, std::allocator >, boost::detail::variant::void_, boost::detail::variant::void_, boost::detail::variant::void_, boost::detail::variant::void_, boost::detail::variant::void_, boost::detail::variant::void_, boost::detail::variant::void_> > > > const&) 6 paddle::imperative::OpBase::Run(paddle::framework::OperatorBase const&, std::map<std::string, std::vector<std::shared_ptrpaddle::imperative::VarBase, std::allocator<std::shared_ptrpaddle::imperative::VarBase > >, std::lessstd::string, std::allocator<std::pair<std::string const, std::vector<std::shared_ptrpaddle::imperative::VarBase, std::allocator<std::shared_ptrpaddle::imperative::VarBase > > > > > const&, std::map<std::string, std::vector<std::shared_ptrpaddle::imperative::VarBase, std::allocator<std::shared_ptrpaddle::imperative::VarBase > >, std::lessstd::string, std::allocator<std::pair<std::string const, std::vector<std::shared_ptrpaddle::imperative::VarBase, std::allocator<std::shared_ptrpaddle::imperative::VarBase > > > > > const&, std::unordered_map<std::string, boost::variant<boost::blank, int, float, std::string, std::vector<int, std::allocator >, std::vector<float, std::allocator >, std::vector<std::string, std::allocatorstd::string >, bool, std::vector<bool, std::allocator >, paddle::framework::BlockDesc*, long, std::vector<paddle::framework::BlockDesc*, std::allocatorpaddle::framework::BlockDesc* >, std::vector<long, std::allocator >, boost::detail::variant::void_, boost::detail::variant::void_, boost::detail::variant::void_, boost::detail::variant::void_, boost::detail::variant::void_, boost::detail::variant::void_, boost::detail::variant::void_>, std::hashstd::string, std::equal_tostd::string, std::allocator<std::pair<std::string const, boost::variant<boost::blank, int, float, std::string, std::vector<int, std::allocator >, std::vector<float, std::allocator >, std::vector<std::string, std::allocatorstd::string >, bool, std::vector<bool, std::allocator >, paddle::framework::BlockDesc*, long, std::vector<paddle::framework::BlockDesc*, std::allocatorpaddle::framework::BlockDesc* >, std::vector<long, std::allocator >, boost::detail::variant::void_, boost::detail::variant::void_, boost::detail::variant::void_, boost::detail::variant::void_, boost::detail::variant::void_, boost::detail::variant::void_, boost::detail::variant::void_> > > > const&, paddle::platform::Place const&) 7 paddle::imperative::Tracer::TraceOp(std::string const&, std::map<std::string, std::vector<std::shared_ptrpaddle::imperative::VarBase, std::allocator<std::shared_ptrpaddle::imperative::VarBase > >, std::lessstd::string, std::allocator<std::pair<std::string const, std::vector<std::shared_ptrpaddle::imperative::VarBase, std::allocator<std::shared_ptrpaddle::imperative::VarBase > > > > > const&, std::map<std::string, std::vector<std::shared_ptrpaddle::imperative::VarBase, std::allocator<std::shared_ptrpaddle::imperative::VarBase > >, std::lessstd::string, std::allocator<std::pair<std::string const, std::vector<std::shared_ptrpaddle::imperative::VarBase, std::allocator<std::shared_ptrpaddle::imperative::VarBase > > > > > const&, std::unordered_map<std::string, boost::variant<boost::blank, int, float, std::string, std::vector<int, std::allocator >, std::vector<float, std::allocator >, std::vector<std::string, std::allocatorstd::string >, bool, std::vector<bool, std::allocator >, paddle::framework::BlockDesc*, long, std::vector<paddle::framework::BlockDesc*, std::allocatorpaddle::framework::BlockDesc* >, std::vector<long, std::allocator >, boost::detail::variant::void_, boost::detail::variant::void_, boost::detail::variant::void_, boost::detail::variant::void_, boost::detail::variant::void_, boost::detail::variant::void_, boost::detail::variant::void_>, std::hashstd::string, std::equal_tostd::string, std::allocator<std::pair<std::string const, boost::variant<boost::blank, int, float, std::string, std::vector<int, std::allocator >, std::vector<float, std::allocator >, std::vector<std::string, std::allocatorstd::string >, bool, std::vector<bool, std::allocator >, paddle::framework::BlockDesc*, long, std::vector<paddle::framework::BlockDesc*, std::allocatorpaddle::framework::BlockDesc* >, std::vector<long, std::allocator >, boost::detail::variant::void_, boost::detail::variant::void_, boost::detail::variant::void_, boost::detail::variant::void_, boost::detail::variant::void_, boost::detail::variant::void_, boost::detail::variant::void_> > > >, paddle::platform::Place const&, bool)

Error Message Summary:

Error: Need to Create DeviceContextPool first! [Hint: pool should not be null.] at (/paddle/paddle/fluid/platform/device_context.h:456)