# Evals and RL

Many short, identical runs. Use Spot, and let starts wait in a queue instead of failing.

```sh
harebox new --name env-base
harebox template save current --name eval-env
FLEET=$(harebox fleet new --name evals --desired 2 --tier spot --template eval-env | jq -r .id)
harebox fleet info "$FLEET"
harebox fleet set "$FLEET" --desired 0
harebox fleet rm "$FLEET"
```

Pin `template@version`, and record it with your results. **Spot and Shared vary in speed**, because they're shared. If timing itself is what you measure, use `xlarge` (whole threads) or record `cpu_steal_percent` with each result.