CMB-S4 Experience with FABRIC for Data Challenge Zero

While the bulk of the computing for the CMB-S4 experiment can be satisfied by large batch facilities, such as NERSC.  There is a need for prompt processing to support daily quality checks and to produce prompt transient directions of millimeter wave astrophysical phenomena for the community.  The prompt processing system should be available each day observations are taken, be well connected to networking, and ideally supported as a part of an agency’s computing facility to gain economies related to multiple users of the facility.

This technical note  describes CMB-S4 experience with research infrastructure provided by the NSF Funded FABRIC project (NSF awards 1935966, 2029260, https://fabric-testbed.net/).  We found we were able to validate this platform’s architecture type  for potential use in CMB-S4 for prompt processing use cases.