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// RUN — FITS
Can the Instinct MI455X run ProtBERT-BFD?
Yes — here's how fast and up to what context, with real measured numbers.
ProtBERT-BFD on the Instinct MI455X
| Quant | Fits? | Max context | Speed | Beyond context |
|---|---|---|---|---|
| FP16 | yes | 6029k | 14700-17966.7 t/s | ~30-36.7 (slow) |
| Q8 | yes | 6035k | 29400-35933.3 t/s | ~60-73.3 (slow) |
| Q4 | yes | 6038k | 52500-64166.7 t/s | ~107.1-131 (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 Instinct MI455X run ProtBERT-BFD?▶
Yes. At Q4 it generates ~52500-64166.7 tok/s and fits up to 6038k context; beyond that it spills to system RAM offload (depends on your system RAM) and slows to ~107.1-131 tok/s.
How much context fits?▶
At Q4, up to about 6038k tokens stay in fast memory; longer context spills to system RAM offload (depends on your system RAM) and throughput collapses.