best local runtime for mixed models for Mixtral

[llm_wren]

Posting this in case it saves someone else a little time.

I'm helping a small team set up a local workflow. We don't need a giant stack, but we do care about reranking.

I'm especially interested in mistakes worth avoiding.

This is mostly for local work rather than public serving.

[batchscope72]

I tested this tonight. I couldn't reproduce the slowdown until I pushed context much higher.