Two Config Tweaks Boost Ling-3.0-flash INT4 Inference Speed by 85%
AcanthisittaOk1699 · reddit · 2026-08-10
Developer sudoingX successfully ran the official INT4 quantization of Ling-3.0-flash on a single DGX Spark, boosting inference speed from 20.8 tok/s to 38.7 tok/s with two key adjustments.
Optimizations include:
- Enabling cudagraphs: Dropping the --enforce-eager flag.
- Speculative decoding: Activating bailinghybridv3mtp with 1 speculative token using the checkpoint's built-in draft layer.
Critical Warning: Stock vLLM lacks V3 architecture support and will silently fall back to the wrong attention path, producing fluent but incorrect text. You must use the specific fork (inclusionAI/vllm-ling-v3) to run it properly.
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