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hughperkins / pytorch

Python wrappers for torch and lua

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Segmentation fault OSX

aminert opened this issue · comments

commented

I got this error when trying to import PyTorch under OS X

import PyTorch
dlopen(liblua5.1.so, 10): image not found
Segmentation fault: 11

commented

Hi. I created a travis build for Mac OS X, and managed to get it building. I had to tweak a few things, and it looks like it works now. You can see the build at: https://travis-ci.org/hughperkins/pytorch/builds/112292866 Travis script is at https://github.com/hughperkins/pytorch/blob/master/.travis.yml

Do you want to try pulling down the latest version, and retrying?

commented

Thanks! I got it to work with LUA5.1 (no Luajit). Awesome, will check your build as well.

commented

Ah cool :-)

(no Luajit)

Yes. I havent come up with a theory for how to run it in luajit for now. But I'm hoping that most operations will be in c/c++/cuda, and therefore should still run reasonably well. Will see how it goes.

commented

Thanks, it runs very well with a pretty huge network! No lost in performance at all. Some possible memory leaks, will have to check on that (could be from the nn package)

commented

Thanks, it runs very well with a pretty huge network! No lost in performance at all

Ok, cool :-)

Some possible memory leaks, will have to check on that

Hmmm, thats quite possible. Memory management at the py/lua interface is a bit tricky. Let me know if you have any test-cases that demonstrate leakage, and I'll take a look.

commented

@aminert May I ask what your procedure to install was? Did you run everything in .travis.yml? Did you manage to run on Python 2.7 at all?

commented

travis job output is here: https://travis-ci.org/hughperkins/pytorch/builds and https://travis-ci.org/hughperkins/pytorch/branches

It runs from the travis.yml script eg https://github.com/hughperkins/pytorch/blob/master/.travis.yml

It doesnt currently test python 2.7, though it probably could do so. On ubuntu 15.10, it runs on 2.7 (or ... it used to :-) )

Edit: there is an example of testing against 2.7 here https://github.com/hughperkins/DeepCL/blob/master/.travis.yml , so I can probalby copy some of this across, and see what happens

commented

Added py2.7. Ignore the fact the build is marked failure: thats just a typo in a diagnostic command. You can see tha thte py2.7 tests run ok at https://travis-ci.org/hughperkins/pytorch/builds/121571884#L1990

commented

Thanks Hugh