Thomas Li

Planning on implementing this as part of porting the parquet reader to pylibcudf

Can you try using the cudf.pandas.profile magic? https://docs.rapids.ai/api/cudf/stable/cudf_pandas/usage/#understanding-performance-the-cudf-pandas-profiler I think this should tell you which operations are running on the GPU and which are running on CPU.

Thanks for the reviews! I'll probably put this back in draft while your cudf.polars are getting merged. I think I'm already hitting some conflicts with your PRs, so probably best...

This needs to wait until compat with polars 1.1 is achieved.

/merge