Google TPU
The Tensor Processing Unit is what happens when the weight-stationary systolic array from Systolic Arrays and Dataflow is scaled up to a datacenter training and inference accelerator, with a compiler stack and an interconnect built around it from the start. It is worth its own page separately from the general dataflow discussion because using a TPU well means accepting a programming model that looks nothing like CUDA: you do not write kernels for it at all.