[Buildbot-devel] how to have more than one builder/buildslave?

[Jim Rowan]

I have a generic task that I have a builder for (let's call it  
"testrunner").  We need to run several instances of this task  
simultaneously.  Right now, I run several buildslaves on a single  
machine so that each of those buildslaves can run an instance of the  
testrunner builder.  The testrunner builder is quite low-impact, a  
single machine can easily handle many instances of it.  It's a pretty  
awkward situation to have to have a buildslave for each one, and we  
need to scale further...

What would be involved in getting the same buildslave to run more than  
one copy of a builder?  Obviously, I have to set the base directory so  
that they don't stomp on each other... but I don't know where else to  
poke or what might be involved.  How hard will this be?