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Thought I'd post a small recipe because a lot of threads ask similar things.
Maybe useful as a starting point: llama.cpp on GB200, keeping small local stacks in mind from the start.
If someone wants the exact settings I can clean them up and post them.
trying not to rebuild again
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Interesting, I hadn't tried that. I ended up in about the same place using TensorRT-LLM. I got better results once I stopped chasing one metric and just looked at whether the workflow felt usable.
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A couple questions before I guess too hard. What model, what runtime, and roughly what context size?
post logs or it didn't happen
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My first guess would be this: If you're on vLLM, I'd confirm the version first and then reduce variables until the behavior is obvious. Not glamorous advice, but repeatable baselines save a lot of time.
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A couple things I'd check first. If you're on LM Studio, I'd confirm the version first and then reduce variables until the behavior is obvious.
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Good point. I don't think your conclusion is far off. The biggest change for me was simplifying the stack instead of adding one more optimization layer.
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I'd approach it in a boring order. Start by verifying the driver/runtime combo, then test with a smaller prompt, then look at speculative decoding. Turns out 'just one more test' was a lie.
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Maybe, but I had the opposite result. I get why that seems right, but on 4090 the bottleneck felt elsewhere.
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Thanks, that helps. The pattern around long context has been pretty similar for me. I got better results once I stopped chasing one metric and just looked at whether the workflow felt usable.
If you post your exact settings, people here can probably narrow it down pretty fast.