Functions hanging on OS X

[96imranahmed]

Hey all,

Thanks for the awesome python module 👍 I was just wondering, have any of you run into an issue where the mfcc function hangs (and presumably other functions such as fbank) hang on OSX? I was running some multi-processed code and these functions confusingly never completed on my Mac. However, when I ran the equivalent function in Ubuntu 16.04 on the same data, the functions returned as expected.

Have any of you run into this before? I'm not sure what would could cause this - especially seeing that the source code seems to primarily call numpy operations. I'll investigate this further and hopefully post more details here. Unfortunately the code I was running was heavily multi-processed, so it might take a bit of refactoring to allow me to properly debug things. I just wanted to post on here and see if anybody else had run into a similar issue? 😃

[jameslyons]

I've never heard of this happening, it is fairly simple numpy code after all. If i had to guess, i suspect it might be the rolling_window function in sigproc.py, the docs say as_strided is a bit risky. Try setting the flag in framesig to false so that strided is not used (youll have to edit the code) and see if it still happens

[96imranahmed]

Interesting - exactly, that is what I thought! Right, thank you for pointing that out me - that'll help with my debugging efforts! I haven't looked back it as yet (it keeps hanging so I switched to ubuntu) but when I do, I'll let you know!

[kiwiloveskiwis]

Same issue here. the mfcc never returns... Any update?

[morenoh149]

this test passes for me on osx https://github.com/morenoh149/python_speech_features/blob/hm-add-mfcc-test/test/test_sigproc.py#L35 does it fail for you @kiwiloveskiwis @96imranahmed ?

[96imranahmed]

Sorry for the delay in getting back to you - I just ran the test and oddly enough it works fine for me (all tests returned with no errors). Is the function hanging due to an edge-case then?

[morenoh149]

If you can think of a more comprehensive test lets get it into the tests