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// RUN — FITS
Can the Instinct MI455X run ProGen2-xlarge?
Yes — here's how fast and up to what context, with real measured numbers.
ProGen2-xlarge on the Instinct MI455X
| Quant | Fits? | Max context | Speed | Beyond context |
|---|---|---|---|---|
| FP16 | yes | 2923k | 964.7-1179.1 t/s | ~2-2.4 (slow) |
| Q8 | yes | 2972k | 1929.4-2358.1 t/s | ~3.9-4.8 (slow) |
| Q4 | yes | 2993k | 3445.3-4210.9 t/s | ~7-8.6 (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 ProGen2-xlarge?▶
Yes. At Q4 it generates ~3445.3-4210.9 tok/s and fits up to 2993k context; beyond that it spills to system RAM offload (depends on your system RAM) and slows to ~7-8.6 tok/s.
How much context fits?▶
At Q4, up to about 2993k tokens stay in fast memory; longer context spills to system RAM offload (depends on your system RAM) and throughput collapses.