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Can the NVIDIA B200 run mBART-50?
Yes — here's how fast and up to what context, with real measured numbers.
mBART-50 on the NVIDIA B200
| Quant | Fits? | Max context | Speed | Beyond context |
|---|---|---|---|---|
| FP16 | yes | 2654k | 4786.9-5704.9 t/s | ~23.9-28.5 (slow) |
| Q8 | yes | 2663k | 9573.8-11409.8 t/s | ~47.9-57 (slow) |
| Q4 | yes | 2667k | 17096-20374.7 t/s | ~85.5-101.9 (slow) |
Estimate (memory-bound). Beyond "max context" the KV cache spills to system RAM offload (depends on your system RAM) and speed drops to the "beyond" figure.
FAQ
Can the NVIDIA B200 run mBART-50?▶
Yes. At Q4 it generates ~17096-20374.7 tok/s and fits up to 2667k context; beyond that it spills to system RAM offload (depends on your system RAM) and slows to ~85.5-101.9 tok/s.
How much context fits?▶
At Q4, up to about 2667k tokens stay in fast memory; longer context spills to system RAM offload (depends on your system RAM) and throughput collapses.