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I'm trying to sanity-check my setup.
I'm mostly working with Llama in SGLang on 4090. The part I'm trying to understand is prefill/decode split.
Not looking for the perfect answer, mostly what worked in real use.
This is mostly for local work rather than public serving.
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What worked for me was pretty simple. Before rebuilding anything, I'd test one clean baseline with Gemma and compare from there.
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My first guess would be this: Start by verifying the driver/runtime combo, then test with a smaller prompt, then look at batch size.
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that fixed it for me too.
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Did a small comparison this afternoon. I couldn't reproduce the slowdown until I pushed context much higher. The surprise was that memory pressure showed up before throughput collapsed.
learning in public
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that fixed it for me too.
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I hit almost the same issue last night.
retrieval before vibes
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I tested this tonight. I couldn't reproduce the slowdown until I pushed context much higher.