Cutlass Fast linear Algebra - Nvidia - Header Only

[solvingj]

https://devblogs.nvidia.com/cutlass-linear-algebra-cuda/ https://github.com/NVIDIA/cutlass/blob/master/README.md

Very interesting header-only library. Looks like it's got a makefile so it's focused on linux (as is most cuda stuff). If this gets packaged, we should definitely validate it across all three major platforms with an effective test_package.