Somebody built "cpu-chat" based on this: https://x.com/rauchg/status/2114770919436808572?a=bBcj9AaSsl...

It supports chat via 3 separate mechanisms:

- CPU contention

- Cache eviction timing

- DRAM bandwidth contention

Very cool to see this kind of hypothetical working in practice.

I wonder if it's also possible for agents to communicate via a shared KV-cache. Maybe by spawning sub-agents with carefully crafted system-prompts/prefixes. KV-caches are often shared between many computers, so it would be a powerful communication channel.