Many of the TBB algorithm implementations either do not scale well or are even outperformed by the serial implementations. The poor performers should be profiled and optimized. Using https://gitlab.kitware.com/snippets/21 on outputs obtained from running `BenchmarkDeviceAdapter_SERIAL` and `BenchmarkDeviceAdapter_TBB` on a quad core + HT processor (ideal speedup = 4) yields the results in https://gitlab.kitware.com/snippets/22.