Can we use this model with nvfp4 kv cache?

#1
by positiveone - opened

I had the same question. I'm using vLLM which supports this via --kv-cache-dtype nvfp4, haven't tested deploying GLM-5.2 with it yet.

I had the same question. I'm using vLLM which supports this via --kv-cache-dtype nvfp4, haven't tested deploying GLM-5.2 with it yet.

I don't think vLLM supports nvfp4 as kv cache type. Where have you seen this?

I had the same question. I'm using vLLM which supports this via --kv-cache-dtype nvfp4, haven't tested deploying GLM-5.2 with it yet.

I don't think vLLM supports nvfp4 as kv cache type. Where have you seen this?

It was added two releases ago in v0.21.0. The pull request is here: https://github.com/vllm-project/vllm/pull/40177

Docs are here: https://docs.vllm.ai/en/latest/cli/serve/#-kv-cache-dtype

I had the same question. I'm using vLLM which supports this via --kv-cache-dtype nvfp4, haven't tested deploying GLM-5.2 with it yet.

I don't think vLLM supports nvfp4 as kv cache type. Where have you seen this?

It was added two releases ago in v0.21.0. The pull request is here: https://github.com/vllm-project/vllm/pull/40177

Docs are here: https://docs.vllm.ai/en/latest/cli/serve/#-kv-cache-dtype

Ah very cool! Thanks for updating me.

No, you can't even though this kvcache quantization is supported in vllm. It is not supported for this model.

Value error, nvfp4 KV cache is not supported with MLA (Multi-head Latent Attention) backends.

No, you can't even though this kvcache quantization is supported in vllm. It is not supported for this model.

Value error, nvfp4 KV cache is not supported with MLA (Multi-head Latent Attention) backends.

Thanks, I reported this to vLLM.

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