SageMaker training with FSx: what is "directory_path"

FSx for Lustre is a file system that you can use to provide high performance for ML training workloads. The directory_path should point to the location on your file system where your dataset is stored.

In the example in the docs: directory_path='/fsx/tensorflow',

/fsx is the directory you define on your compute instances where you are mounting the file system /tensorflow would represent a folder within the fsx directory

If you are using an S3-linked FSx for Lustre file system /tensorflow would be a prefix within your S3-linked bucket.