WARNING:root:Torch AMP is not available on this platform

mixed-precision
1

I ran into WARNING:root:Torch AMP is not available on this platform consistently when running SlowFast on 8 V100s. And I’m not even enabling amp. Any idea where this warning comes from?

2

I haven’t seen this warning before and searching for it yields a result in fairseq. The warning “namespace” also doesn’t seem to be created in PyTorch. Are you using fairseq or another library depending on PyTorch, which might raise this warning?

3

I’ve found the source of the warning using trace and it turned out to be fairscale. I will look into it to find out why import failed, thanks a lot!

4

Met the same problem. Did you find out why?

5

Not really, it turns out I don’t need fairscale at all so I simply uninstall it and everything works well.

6

My torch version is 1.8.1 and I met the same issue when using FairScale 0.4.4. The issue was fixed by rolling back to an old version of FairScale, e.g., 0.4.1.

7

Thanks for this hint. Met the same problem and rolling back to 1.4.5+0.4.1 works.