If you design your network on a TPU, you will tend to use operators that work well on a TPU. And in the end you will have a network that works best on the TPU.

If you design your network on a TPU, you will tend to use operators that work well on a TPU. And in the end you will have a network that works best on the TPU. Lather rinse repeat for any other architecture. You can even make a network that runs best on Graphcore that way, but it won't be fun to do it. You might even get Graphcore to pay top dollar for it though as they both need some good publicity and they have lots of VC left to squander. This also tends to be true of video games where the platform on which they were developed is the best place to play them rather than their many ports.