[Carpet] CarpetRegrid testsuites

[Thomas Radke]

Erik Schnetter wrote:
> Of course, the old test cases used IOBasic instead of CarpetIOBasic,  
> and these days IOBasic does not work with Carpet any more since it  uses 
> the new reduction interface.  So the old output isn't very  useful any 
> more, except for archaeology.

Not quite. In such cases (which I came across often enough) I reversed 
back to a version of IOBasic from before 1 Nov 2005 and ran the 
testsuites. If they passed I could safely substitute IOBasic's reduction 
output files with their equivalents produced by CarpetIOScalar. The 
procedure is awkward but works, I could "fix" a couple testsuites that way.

However, I wish we'd never have switched to using the new reduction 
flesh API in IOBasic in the first place. For more than a year now its 
reference implementation for PUGH is still incomplete. Carpet had good 
reasons to wait with its own implementation.

> I have updated the test cases, but they produce now nans with the  
> development version of Carpet.  I'll have a look.

Thanks !

-- 
Cheers, Thomas.