QLoRA resource reality check with TensorRT-LLM

[sparrowbrook]

Did a bit of testing and thought I'd post the result here.

Short version: SGLang behaved well for me, but only after I stopped ignoring prefix caching.

Nothing scientific here, just practical notes from a real setup.

I care more about stability than squeezing the last possible tokens/sec out of it.

[northgrid33]

I think the bottleneck is somewhere else. I wouldn't optimize around that first. On my side the bigger swing came from the runtime and not the model.

[benchplease]

Good point. The pattern around quant drift has been pretty similar for me.