NCCL all_reduce is always attempted when 2+ GPUs are selected; a failure
leaves InterconnectScore=0 (no bonus, no penalty) and OverallStatus
unaffected. Exposing the checkbox implied NCCL is optional and made a
failed run look like a deliberate skip.
- Remove benchmark-run-nccl checkbox and its change listener from pages.go
- Client sends run_nccl: selected.length > 1 (automatic)
- api.go default runNCCL=true is unchanged
- Selection note now mentions NCCL automatically for multi-GPU runs
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Michael Chus
9482ba20a2