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Running GPT-OSS-120B at 500 tokens per second on Nvidia GPUs

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131–140 of 180 posts

Re: Running GPT-OSS-120B at 500 tokens per second on Nvidia GPUs

#131

I just used GPT-OSS-120B on a cross Atlantic flight on my MacBook Pro (M4, 128GB RAM). A few things I noticed: - it’s only fast with with small context windows and small total token context; once more than ~10k tokens you’re basically queueing everything for a long time - MCPs/web search/url fetch have already become a very important part of interacting with LLMs; when they’re not available the LLM utility is greatly…

How long did your battery last?!

Re: Running GPT-OSS-120B at 500 tokens per second on Nvidia GPUs

#133
post #8

What's the best speed people have gotten on 4090s?

You can't fit the model into 4090 without quantization, its like 64 gigs. For home use, Gemma27B QAT is king. Its almost as good as Deepseek R1

You don't really need it to fit all in VRAM due to the efficient MoE architecture and with llama.cpp

The 120B is running at 20 tokens/sec on my 5060Ti 16GB with 64GB of system ram. Now personally I find 20 tokens/sec quite usable, but for some maybe it's not enough.

Re: Running GPT-OSS-120B at 500 tokens per second on Nvidia GPUs

#134
post #36

Earlier quoted context omitted.

Its also easy to do 120b on CPU if you have the resources. I had 120b running on my home LLM CPU inference box in just as long as it took to download the GGUFs, git pull and rebuild llama-server. I had it running at 40t/s with zero effort and 50t/s with a brief tweaking. Its just too bad that even the 120b isn't really worth running compared to the other models that are out there. It really is amazing what ggerganov…

What hardware do you have? 50tk/s is really impressive for cpu.

I'm getting 20 tokens/sec on the 120B model with a 5060Ti 16GB and a regular desktop Ryzen 7800x3d with 64GB of DDR5-6000.

Re: Running GPT-OSS-120B at 500 tokens per second on Nvidia GPUs

#136
post #95

Earlier quoted context omitted.

We could call the consumer ones GFX cards, and keep GPU for the matrix multiplying ones.

GPU stands for "graphics processing unit" so I'm not sure how your suggestion solves it. Maybe renaming the device to an MPU, where the M stands for "matrix/math/mips" would make it more semantically correct?

I think that G was changed to "general", so now it's "general processing unit".

Re: Running GPT-OSS-120B at 500 tokens per second on Nvidia GPUs

#137

I just used GPT-OSS-120B on a cross Atlantic flight on my MacBook Pro (M4, 128GB RAM). A few things I noticed: - it’s only fast with with small context windows and small total token context; once more than ~10k tokens you’re basically queueing everything for a long time - MCPs/web search/url fetch have already become a very important part of interacting with LLMs; when they’re not available the LLM utility is greatly…

M3 Max 128GB here and it’s mad impressive. Im spec’ing out a Mac Studio with 512GB ram because I can window shop and wish but I think the trend for local LLMs is getting really good. Do we know WHY openAI even released them?

If the new gpt 5 is actually better, then this oss version is not really a threat to Openai's income stream, but it can be a threat to their competitors.

Re: Running GPT-OSS-120B at 500 tokens per second on Nvidia GPUs

#138
GPT-OSS will run even faster on Blackwell chips because of its hardware support for fp4.

If anyone is working on training or inference in Rust, I'm currently working on adding fp8 and fp4 support to cudarc[0] and candle[1]. This is being done so I can support these models in our inference engine for Mixlayer[2].

[0] https://github.com/coreylowman/cudarc/pull/449 [1] https://github.com/huggingface/candle/pull/2989 [2] https://mixlayer.com

Re: Running GPT-OSS-120B at 500 tokens per second on Nvidia GPUs

#139
post #55

> widely-available H100 GPUs Just looked in the parts drawer at home and dont seem to have a $25,000 GPU for some inexplicable reason.

>Just looked in the parts drawer at home and dont seem to have a $25,000 GPU for some inexplicable reason.

It just means you CAN buy one if you want, as in they're in stock and "available", not that you can necessarily afford one.

Re: Running GPT-OSS-120B at 500 tokens per second on Nvidia GPUs

#140
post #59
post #55

> widely-available H100 GPUs Just looked in the parts drawer at home and dont seem to have a $25,000 GPU for some inexplicable reason.

Does it even make sense calling them 'GPUs' (I just checked NVIDIA product page for the H100 and it is indeed so)? There should be a quicker way to differentiate between 'consumer-grade hardware that is mainly meant to be used for gaming and can also run LLMs inference in a limited way' and 'business-grade hardware whose main purpose is AI training or running inference for LLMs".

I think apple calls them NPUs and Broadcom calls them XPUs. Given they’re basically the number 2 and 3 accelerator manufacturers one of those probably works.
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