AMD's NVLink is infinity fabric (MI60, MI50) isnt it? with 200gb card to card transfer rate... Did you take that into account? I agree the toolset is light years ahead of what I seen from AMD, but I'm not much into that.
Ah, I hadn't seen that announcement. It looks like this was announced recently (November 2018) and it's still 100Gb/s slower throughput than the latest NVLink. Either way, it could certainly be interesting if they compete on price, but I cannot find any information yet on actually using it to sync with OpenCL / ROCm.