Hardware trading pits

They use the graphics chip for the bulk of heavy lifting in ordering the  two incoming queues.

The chips operate off line from the pit processor, so the pit boss just reads in the latest batch and begins round robin betting and price compression. Process hundreds tens of thousands of bids per second. Let the trading bots have an entry point into the graphics chip to read current distribution state.

But any off line risk processor will do, the key is that it run without scheduler for array and block moves.

Block chain efficiency anhancements

The pit is the custodial holder, so all ledger transactions are from it to others and others to it. The ledger calls are partially constructed blocks.