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andy99today at 2:12 PM4 repliesview on HN

> Qwen3.8-Flash-Next features a 125B-parameter main model, supplemented by an additional 51B N-gram embeddings, with 6B parameters activated per token.

Didn’t see this mentioned yet. I wonder what this means for the effective size. It’s evidently ~176B paramètres, but how does that get quantized. A 4-bit quant under 100GB seems unlikely, I’m suspecting this won’t run in 128GB unified memory

In principle I like the idea of trading more memory for compute though, even if there’s a memory shortage right now


Replies

NitpickLawyertoday at 2:43 PM

It is 125B A6B. vLLM is already out with support, ngrams can be offloaded to RAM so you only need ~96GB VRAM for nvfp4 w/ full context.

Likely soon we'll see nvme offloading for ngrams as well. They're just an index, so that should be plenty fast for what it does. LLama.cpp support should come soon as well, and they might do some things with offloading first.

pbmonstertoday at 2:23 PM

The N-gram parameters can be fetched from SSD, with maybe the hottest ones staying in memory.

show 1 reply
khalictoday at 2:20 PM

Gonna have to wait a few days to see what the wizards of the HF community come up with…

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cmrdporcupinetoday at 5:44 PM

I have nvfp4 quant fitting fine in 128GB on DGX Spark, but with paging (from nVME) of the n-gram table. Resident ~80GiB for weights & context.

On branch of https://github.com/rdaum/eider (for DGX Spark). ~12 tok/sec decode without speculative decoding (will come later)

Still actively working on this. Prefill currently sucks. Will merge to main by end of day.

EDIT: This has now landed on main. Still haven't done MTP speculative decoding boost, but:

80tok/sec prefill, 12 tok/sec decode. ~90GiB or so resident. n-grams paged from disk.