The Salishan Conference on High-Speed Computing is an annual, invitation-only conference. It is organized by NNSA folks and always hosted at the Salishan Coastal Lodge a few hours west of Portland.1
This conference is where leaders across the global HPC community get together to talk about heady things and play golf. Though invitation-only, all materials presented are made public on the conference website. It’s a good source of detailed information about what’s going on in the HPC community.