Cooperative miner is almost ready. It is already working and pretty fast. Tested on ‘testnet’, my Intel Atom can manage clients >500Mhash/s without any significant load. There is just need for some web UI for users and a lot of code cleanup.
It is working with jgarzik’s cpuminer, m0mchil’s python miner and Diablo’s java miner pretty well. But I found one problem in comparing targets. As I understand their codes well, they don’t fully compare found hashes with target. So if I set difficulty pretty low, because I want many low-difficulty blocks for fair accounting, miners simply does not return correct hashes (hashes corresponding current target).
For example DiabloMiner. Even if I set target to ‘ffff..ffff00’, miner does not return hashes with less than eight zeros on the end. Am I wrong or miners really need patches to work correctly with low-difficulty targets?
When I set target with eight zeros on the end (so all tested miners work correctly with that target), computer with ~2mhash/s gives around 2 blocks per hour, which is IMHO too little for fair short-term distribution.