• 版本、环境信息：

   1）PaddlePaddle版本：1.8.4 和 2.0.0rc1
   2）CPU：I7 6900K使用 MKL/MKLDNN
   4）系统环境：Ubuntu 16.04，GCC 5.4.0 20160609
-预测信息
   1）C++预测：
GIT COMMIT ID d82d59e
WITH_MKL: ON
WITH_MKLDNN: ON
WITH_GPU: OFF
CXX compiler version: 5.4.0

 2）CMake包含路径的完整命令
cmake .. -DWITH_PYTHON=OFF -DWITH_GPU=OFF -DWITH_TESTING=OFF -DCMAKE_BUILD_TYPE=Release -DON_INFER=ON -DFLUID_INFERENCE_INSTALL_DIR=/home/jiachx/thunisoft_ocr_dev/paddle_inference_install_dir_forcpu -DWITH_MKLDNN=ON -DWITH_MKL=ON
   3）预测库来源：源码编译

• 复现信息：使用的是ppocr的server模型
• 问题描述：多次运行，有时次成功有时报错

terminate called after throwing an instance of 'paddle::platform::EnforceNotMet'
what(): In user code:

File "tools/export_model.py", line 75, in
main()
File "tools/export_model.py", line 51, in main
config, eval_program, startup_prog)
File "/paddle/PaddleOCR/PaddleOCR/tools/program.py", line 215, in build_export
image, outputs = model(mode='export')
File "/paddle/PaddleOCR/PaddleOCR/ppocr/modeling/architectures/det_model.py", line 135, incall
conv_feas = self.backbone(image)
File "/paddle/PaddleOCR/PaddleOCR/ppocr/modeling/backbones/det_resnet_vd.py", line 117, incall
name=conv_name)
File "/paddle/PaddleOCR/PaddleOCR/ppocr/modeling/backbones/det_resnet_vd.py", line 239, in basic_block
name=name + "_branch2a")
File "/paddle/PaddleOCR/PaddleOCR/ppocr/modeling/backbones/det_resnet_vd.py", line 138, in conv_bn_layer
bias_attr=False)
File "/root/anaconda3/envs/deploy/lib/python3.7/site-packages/paddle/fluid/layers/nn.py", line 1585, in conv2d
"data_format": data_format,
File "/root/anaconda3/envs/deploy/lib/python3.7/site-packages/paddle/fluid/layer_helper.py", line 43, in append_op
return self.main_program.current_block().append_op(args,kwargs)
File "/root/anaconda3/envs/deploy/lib/python3.7/site-packages/paddle/fluid/framework.py", line 2880, in append_op
attrs=kwargs.get("attrs", None))
File "/root/anaconda3/envs/deploy/lib/python3.7/site-packages/paddle/fluid/framework.py", line 1977, ininit*
for frame in traceback.extract_stack():

InvalidArgumentError: The Input Variable(Input) of (conv2d) Operator used to determine kernel data type is empty or not LoDTensor or SelectedRows or LoDTensorArray.
[Hint: Expected data_type != dafault_data_type, but received data_type:-1 == dafault_data_type:-1.] (at /CPPproject/Paddle/paddle/fluid/framework/operator.cc:1479)
[Hint: If you need C++ stacktraces for debugging, please set FLAGS_call_stack_level=2 .]
[operator < conv2d > error]
已放弃 (核心已转储)