@ngzhang
Do you plan on using test-net or main-net for testing ASIC units?
BFL has just announced that they will be using main-net for "QC" activities of their batch production. This could equate to 600GH+ per day of mining by BFL directly during the ASIC ramp up.
I would imagine that anyone testing ASIC or any new hardware would use
testnet in a box, to avoid artificially raising the difficulty of either testnet or mainnet. And BFL have not 'just announced' this - they've never said they are using mainnet for testing - link...?
Will