Cant find library and locate the .so file

[Johsamue]

Hi, I have an PYNQ image v2.4 and have cloned this repo, but cant run the 3thed step:

I get this error but when I go there I can see the file and its executable, do I need to set a path or how do I solve the error?

OSError: cannot load library '/usr/local/lib/python3.6/dist-packages/bnn/libraries/pynqZ1-Z2/python_hw-cnvW1A1-pynqZ1-Z2.so': /usr/local/lib/python3.6/dist-packages/bnn/libraries/pynqZ1-Z2/python_hw-cnvW1A1-pynqZ1-Z2.so: undefined symbol: cma_alloc. Additionally, ctypes.util.find_library() did not manage to locate a library called '/usr/local/lib/python3.6/dist-packages/bnn/libraries/pynqZ1-Z2/python_hw-cnvW1A1-pynqZ1-Z2.so'

[giuliogamba]

Hi, on which board are you executing this?

[Johsamue]

On a Pynq Z2 board

[giuliogamba]

Did you install the package using pip (as in the quick start) or just cloned the repo? In order to execute the available jupyter notebooks on the board you should install the package.

[Johsamue]

Yes I followed the quick start and did pip install, found bnn in my jupiter notebook.

[giuliogamba]

Are you executing one of the jupyter notebooks or you're experiencing this issue in new code? If it's in a new codebase, are you importing the bnn library (import bnn) and experiencing the error during import?

[giuliogamba]

@Johsamue do you have any update? Is the issue fixed?