On: PCI Express on the Raspberry Pi 4

[morphle]

I suggest the RoarVM message passing Smalltalk Virtual Machine [1][2]. Erlang/OTP with actors would be my second choice.

[1]Ungar, D., & Adams, S. S. (2009). Hosting an object heap on manycore hardware. https://sci-hub.tw/10.1145/1640134.1640149

[2]RoarVM demo https://www.youtube.com/watch?v=GeDFcC6ps88