Adapteva's Parallela. I don't follow the semiconductor industry that closely, so perhaps very similar architectures are becoming more common, but as someone wit

Adapteva's Parallela. I don't follow the semiconductor industry that closely, so perhaps very similar architectures are becoming more common, but as someone with a passing interest in HPC I was very excited about their crowd-sourced board for playing with parallel programming on an architecture built just for that, but it suffered from many problems typical of crowd-sourcing. It was delivered late with a lot of business problems leading up to it. I played with it a bit and haven't heard of it otherwise since.