Multi GPU on windows

has anyone successfully got this running?

No combination of accelerator settings or even changing the script to use gloo has let me successfully fully run the script.

I did get to the point of both GPUs being loaded however the script hit an error
"RuntimeError: Trying to create tensor with negative dimension"
which I was not able to further troubleshoot.

Wondering if it is just not compatible for now basically, or even sensible as I have heard multi GPU for image training setups have issues with the seed not being properly shared between them.

Start by reproducing the reported multi-GPU run on Windows with the accelerator settings and the gloo backend mentioned in the issue. Capture the complete traceback for the negative-dimension error and determine whether the script currently supports this setup; done means a documented compatibility result or a reproducible, validated fix.

Written by the indexing model from the issue text.