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// RUN — FITS
Can the NVIDIA DGX Spark run ERNIE-4.5-21B-A3B?
Yes — here's how fast and up to what context, with real measured numbers.
ERNIE-4.5-21B-A3B on the NVIDIA DGX Spark
| Quant | Fits? | Max context | Speed | Beyond context |
|---|---|---|---|---|
| FP16 | yes | 274k | 4.7-5.7 t/s | ~0.2-0.2 (slow) |
| Q8 | yes | 354k | 9.5-11.3 t/s | ~0.3-0.4 (slow) |
| Q4 | yes | 389k | 16.9-20.2 t/s | ~0.6-0.7 (slow) |
Estimate (memory-bound). Beyond "max context" the KV cache spills to SSD swap and speed drops to the "beyond" figure.
FAQ
Can the NVIDIA DGX Spark run ERNIE-4.5-21B-A3B?▶
Yes. At Q4 it generates ~16.9-20.2 tok/s and fits up to 389k context; beyond that it spills to SSD swap and slows to ~0.6-0.7 tok/s.
How much context fits?▶
At Q4, up to about 389k tokens stay in fast memory; longer context spills to SSD swap and throughput collapses.