Pytorch v1.0 stable is now working on Windows but fastai v1 needs some tweaks to get it work on Windows

sgtpepper · January 29, 2019, 4:10am

With the 0.7 pytorch and old course my gpu utilization was 100% at times. After upgrading to pytorch 1.0 and course v3, the gpu usage was only spikes.

artuskg · February 5, 2019, 8:54pm

@sgugger might also want to fix this for a future version of the notebooks by adding

fn_paths = [item.as_posix() for item in fn_paths]

into the https://github.com/fastai/course-v3/tree/master/nbs/dl1 notebooks that operate on file names. This would make Jeremy’s regexp work on Win and Posix without us poor Windows users having to figure out REs on themselves

sgugger · February 6, 2019, 1:53am

The as_posix is in the library now, it has been suggested as a bug fix and will be in v1.0.43 when it’s released.

xieziyan171 · March 23, 2019, 11:07am

set path = r’\([^\]+)_\d+.jpg$’ will fix it.But in the meet a issue—‘PicklingError’ until now, i can’t fix it.

hwasiti · March 24, 2019, 4:50am

I think that is because fastai0.7 has its own custom loader, while fastai1.0 uses Pytorch’s dataloader… As @mgorecki said, we should wait Pytorch fix for this…

david_c · April 29, 2019, 8:08pm

The Pytorch issue you’ve linked to is the largest issue I have using Fastai on Windows. What used to take me 20-30 seconds now takes around 2-5 minutes (minimum).