Chronos Known Issue

1. Issue 1

Problem description

Numpy.ndarray size changed, may indicate binary incompatibility. Expected 88 from C header, got 80 from PyObject.

Solution

  • pip install -y pycocotools

  • pip install pycocotools --no-cache-dir --no-binary :all:

  • conda install –c conda-forge pycocotools


2. Issue 2

Problem description

NotImplementedError: Cannot convert a symbolic Tensor (encoder_lstm_8/strided_slice:0) to a numpy array.

Solution

  • pip install numpy==1.19.5


3. Issue 3

Problem description

StanModel object has no attribute ‘fit_class’, cause of pip, may be.

Solution

  • pip uninstall pystan prophet –y

  • conda install –c conda-forge prophet=1.0.1


4. Issue 4

Problem description

Exception: No active RayContext. Please call init_orca_context to create a RayContext.

ray_ctx = RayContext.get()
ray_ctx = RayContext.get(initialize=False)

Solution

  • Make sure all operations are before stop_orca_context.

  • No other RayContext exists before init_orca_context.


5. Issue 5

Problem description

Sed: error while loading shared libraries: libunwind.so.8: cannot open shared object file: No such file or directory.

Only happens when you run source bigdl-nano-init.

Solution

  • apt-get install libunwind8-dev