Andreas Olofsson of Adapteva pointed out an embedded test suite I was not aware of:

The Bristol/Embecosm Embedded Benchmark Suite (BEEBS) are a set of benchmarks are designed to test the performance of deeply embedded systems, particularly with regard to energy consumed. As such they assume the presence of no OS and in particular no output stream.

http://arxiv.org/abs/1308.5174
https://github.com/mageec/beebs