[sfepy] Two problems in one process

I'm trying to solve two problems consecutively in the same program. Each problem defines its own field and variables. Specifically, I do this for testing (same problem creation and operation code run consecutively with different parameters), just for the context.

It fails when the second problem defines its field:

 ValueError: order 0 already used!

which means that somewhere, there's a global mapping of numbers to variables which I need to clean.

I don't know how to do it, and if there are other such global states that need to be cleaned. So my question is whether there's some "nuke everything" function, or a checklist of things to clean, or some other way to do it?

My current workaround is to stick each run under a different process using the multiprocessing module. This works but I hope there's a less cumbersome way.

Thanks, Yosef Meller.