Hi there, I do think that .local/share is the system cache directory. This is a bit of an issue because we have limited space on our login node to 25 GB and ~/cache/wandb/artifacts/staging will often go over my memory capacity. Within this dir there are many files like tmp4xngbfu5 , which I assume is some temporary file for uploading artifacts to wandb server. This does seem to be distinct from WANDB_CACHE_DIR because I have started manually setting this to a different directory within my python scripts. For now I just delete this dir when it gets too large but this is not a sustainable solution.
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