Start down the road of using Cilk reducers.  It doesn't really work as individual scalars.  It needs to be a struct.
Add a simple ICC test that is mysteriously segfaulting.
Try a simple strategy of parallelizing the outer for loop for folds.  Reducers are not working yet.  No extra regressions on the test suite, but nbody is having massive memory leaks.
Tip from Melanie Blower.  Convert all ICC errors number 13397 to warnings and thus fix all the 8 failures of the Cilk backend in the test-suite.  Yay