There is field called poolArgs <https://github.com/apache/beam/blob/c445fdfdfab4a191aa780210564199f2873f85d8/sdks/python/apache_beam/runners/dataflow/internal/clients/dataflow/dataflow_v1b3_messages.py#L5653> in the definition of a WorkerPool. How was this intended to be used? Are there known allowed keys for the various runners? In particular, I would like to know if the DataFlow API supports specifying attaching GPUs to workers.
Cheers, C
