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+--- Thread: system prompt habits that helped for Mixtral (/showthread.php?tid=933)
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system prompt habits that helped for Mixtral - mintstation99 - 10-08-2026
Maybe I'm missing something obvious.
I'm trying to decide whether to keep the current stack or change course. Main question is how people here are handling VRAM headroom.
If you've tested something similar, what did you keep and what did you stop bothering with?
This is mostly for local work rather than public serving.
Re: system prompt habits that helped for Mixtral - localpatch - 10-08-2026
Quote:Maybe I'm missing something obvious.
I'd approach it in a boring order. Start by verifying the driver/runtime combo, then test with a smaller prompt, then look at tail latency. Once you know the plain path works, then add the faster path back in piece by piece.
Re: system prompt habits that helped for Mixtral - thetaarch43 - 10-08-2026
Not sure I agree there. I wouldn't optimize around that first. On my side the bigger swing came from the runtime and not the model.
Re: system prompt habits that helped for Mixtral - quiettoken - 10-11-2026
That matches what I was seeing. The pattern around long context has been pretty similar for me. The biggest change for me was simplifying the stack instead of adding one more optimization layer.
Re: system prompt habits that helped for Mixtral - quantyard - 10-12-2026
I'd approach it in a boring order. Before rebuilding anything, I'd test one clean baseline with Phi and compare from there. Once you know the plain path works, then add the faster path back in piece by piece.
Re: system prompt habits that helped for Mixtral - mlxgarden - 10-13-2026
I'd approach it in a boring order. On GB200, the easiest win is often to back off the aggressive settings and see whether the problem survives.
Re: system prompt habits that helped for Mixtral - quiettoken - 10-13-2026
Quote:I'd approach it in a boring order. On GB200, the easiest win is often to back off the aggressive settings and see whether the problem survives.
Appreciate the detail. I ended up in about the same place using vLLM. Worth rechecking your defaults though, because one bad assumption can make the rest of the thread look confusing.
Re: system prompt habits that helped for Mixtral - mintstation99 - 10-13-2026
Appreciate the detail. That matches what I saw on 7900 XTX. I got better results once I stopped chasing one metric and just looked at whether the workflow felt usable.
There are a few different conversations hiding inside this thread, so being explicit about the goal helps.
Re: system prompt habits that helped for Mixtral - mlxgarden - 10-13-2026
following this because I'm in the same boat.
Re: system prompt habits that helped for Mixtral - torchdesk - 10-13-2026
Quote:following this because I'm in the same boat.
same here on my side.