Hello guys, I successfully compiled caffe with CUDA_8.0.44-2 and clang-3.8 (the current default clang). Maybe we can replace GCC-5 with Clang-3.8 to solve this problem.
That means Stretch still has chance to ship CUDA8, and users are expected to compile with Clang/LLVM instead of GCC-6, as long as the CUDA rDepends compile with clang. I only tested caffe-contrib.