hls_model.compile() fails to compile project

[tengkianen]

Quick summary

hls_model.compile() runs an exception from tutorial notebook part 1

Details

hls_model.compile()
X_test = np.ascontiguousarray(X_test)
y_hls = hls_model.predict(X_test)

Actual behavior

Writing HLS project
Done
---------------------------------------------------------------------------
Exception                                 Traceback (most recent call last)
Input In [13], in <cell line: 1>()
----> 1 hls_model.compile()
      2 X_test = np.ascontiguousarray(X_test)
      3 y_hls = hls_model.predict(X_test)

File D:\Anaconda\lib\site-packages\hls4ml\model\hls_model.py:534, in HLSModel.compile(self)
    532 ret_val = os.system('bash build_lib.sh')
    533 if ret_val != 0:
--> 534     raise Exception('Failed to compile project "{}"'.format(self.config.get_project_name()))
    535 lib_name = 'firmware/{}-{}.so'.format(self.config.get_project_name(), self.config.get_config_value('Stamp'))
    536 if self._top_function_lib is not None:

Exception: Failed to compile project "myproject"

[vloncar]

There's a notebook log that should say the reason for the compilation failure, can you share that as well?

[tengkianen]

Hey I can't seem to locate the log file, do you have an idea of where it's located?

[avinashiiitb]

Any update on the above issue

[LuisSpader]

Any update?

[vloncar]

No log -> no help. Simple.

[LuisSpader]

I found this answer in stackoverflow: [https://stackoverflow.com/questions/66919012/how-can-this-issue-with-hls4ml-be-resolved]

Disclaimer : I asked this question before looking into compilation error details. This question contains the answer to the problem explained here. In short, variable type definition errors in exception definitions prevent synthesis from happening properly.

Unless you are willing to find the correct gcc compiler to run Vivado Synthesis without errors on, I recommend going to Linux for this task.

[jmduarte]

Thanks @LuisSpader for the additional information. I tried to reproduce this on Linux and I couldn't, so I suppose it's a Windows-specific issue. Our developer/maintainer efforts are focused on Linux so I'm sorry we can't be of more help.

If somebody has a fix for Windows, we'd be willing to consider it as a pull request, but it won't be a high priority for us to fix at the moment. Thanks!