BUG: w/ new DAG and claymore miner.
Up until recently ... the following has worked fine:
Mining EXP and SIA or DCR on my rig on 2 7970's
As of the latest DAG .... this now causes a crash when switching to devpool (subsequently having to change epoch to ETH's epoch), the DAG creation takes 2x longer than usual and at the end of it the machine reboots w/ bug check of a hung device thread status.
Ive repeated this across multiple sets of cards - so its not hardware related.
If you use same version and it started to generate DAG slowly - reboot PC, it's not miner issue, drivers or hardware failed. I have several rigs turned on right now and they work fine with latest 7.2 on Win10.
What version of the miner do you use? What pool do you use to mine EXP?
Using win7 x64, 15.12, have tried miner 5.3 and the latest 7.2 .... same issues. I dont understand how its a hardware problem. No cards on rig exhibit this problem when generating either EXP or ETH DAG on miner start, only while mining and switching to devfeepool has the problem shown up(going from EXP mining to devfeepool mining). Could it be size of larger new dag and exp dag cant coexist on a card? ( I dont know how the ongpu dag creation works - is the old DAG discarded prior to the GPUs generate a new one? ... if not then its easily a DAG size issue)
Completely different GPU's on this rig exhibit same problem ... I doubt all the GPU's are failing ..
I just tried to mine EXP, it mines it, after a few DAG switches it still works, no rejected/invalid shares. EXP has epoch #13 and ETH has epoch #79, so it takes in about 1.5 times longer to create DAG for ETH.
Try to specify "-allcoins -1" option, see readme for details. If it does not help, ask here if someone mines EXP and has same problems, this way we can confirm that the problem is not in your hardware.
PS. If you use dwarfpool (or any pool that accepts wallet address directly) you can avoid DAG re-creation at all, miner can mine EXP in devfee too. Though it seems "-allcoins exp" option was broken in v7.x, I fixed it and I can send you an update.