pub const HOST_TXNS_PER_SITE: u64 = 2;Expand description
NOC transactions the HOST issues per participating site, outside the kernel choreography: the program dispatch handshake and the read-back of that site’s cycle buffer. The choreography cannot contain them — they are the runtime’s, not the kernel’s — but the meter counts them, so a model that predicts what the meter will say has to.
It is TWO, measured exactly and at every mesh the ledger holds: 16 sites 144 -> 176, 25 sites 4,400 -> 4,450, 64 sites 4,352 -> 4,480. Not a fitted constant — a count of two host operations.