The gpu lane is now a NODE POOL (this Mac + remote workers from nodes.json) instead
of a single-Metal semaphore. A gpu job runs on whichever node is free:
- server/remote.py: ssh+rsync dispatch — mkdir remote dirs, rsync inputs out, run
the operator's run.py over ssh with repo-relative paths (HF_TOKEN sourced from the
node's .env.remote, off the process table), rsync outputs back, clean up. Cached
health checks; per-node operator allowlist.
- runner: _acquire_gpu_node picks the first free node that supports the op (local
runs anything; a remote must list it + be reachable → auto-fallback to local).
_run_job branches local/remote; the M1 never touches the M3's DB.
- sysinfo/Dashboard: gpu lane limit = pool size; per-node status cards.
- nodes.json (gitignored, primary-only): M1 worker, allowlist excludes trellis_mac
(bf16 unverified on M1) + brush_train (not installed there).
Verified: two FLUX jobs from one queue split M3(local, 10.3s) + M1(remote via ssh,
21.2s), both images rsync'd back and registered on the M3.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>