As of this writing, access to S3DF is still by invitation. You can self-register following instructions here.
This page gives a very brief introduction to SLAC's new S3DF (SLAC Shared Scientific Data Facility) cluster to help you get started. We assume you already have a Unix account and your main intent is to run the Fermitools/Fermipy. During the transition, issues are discussed in the #s3df-migration slack channel.
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