Spreading a single build over multiple slaves

I want to write an ant script that is distributed over multiple slave开发者_开发百科s. I don't understand exactly how the hudson system works, but it seems to simply run the whole of one type of build on a single slave. I would like multiple slaves to run in parallel to do my testing. How can I accomplish this?

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You split your testing job into several jobs. 1 job per slave. Your build will then trigger all testing jobs at the same time. If you need to run an additional job, you can use the join trigger plugin.

The release notes for Hudson 1.377 list a new feature:

Queue/execution model is extended to allow jobs that consume multiple executors on different nodes

Don't know what that exactly means. But I will definitely have a look.