I use a hacked/extended version of: http://delta.tigris.org/ http://delta.tigris.org/ For all kinds of reductions, mainly code which causes compiler failures.

I use a hacked/extended version of: http://delta.tigris.org/ http://delta.tigris.org/ For all kinds of reductions, mainly code which causes compiler failures. It is easy to burn a huge amount of CPU time with reductions (large C++ testcases can take a couple of days), it is just important to remember you are saving brain-time, and resist the urge to try to "help" it along.