Non-blocking
A network that can carry full bandwidth between all node pairs simultaneously with no internal contention (1:1).
Current numbers
1:1 vs 2:1training back-end fabric non-blocking; 2:1 'optimized' cuts back-end cost ~31% (contested — single-source)
2:1-3:1inference fabric oversubscription (vs 1:1 non-blocking for training); 2:1 cuts back-end cost ~31% (contested — single-source)
1:1 vs 2:1–3:1training non-blocking vs inference oversubscribed; 2:1 cuts back-end cost ~31% (contested — single-source); Meta ran 7:1 on 24k H100