I think there are some embedded platforms that used message passing as a primary form of communication. However those are really out there and not at all mainst

I think there are some embedded platforms that used message passing as a primary form of communication. However those are really out there and not at all mainstream. I think what you're talking about is coming. For example, for ARM there is a network on chip architecture that I could see being used as a back bone for this type of system. However, you need software support for it. It's not enough to just build the hardware.