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Title: [0-4] Cayman ALWAYS fails verification, regardless of card or slot Post by: Fuzzy on November 05, 2011, 07:11:27 AM I have 5 cards hooked up to one machine right now. When I go to start all the cards up, the fifth card "[0-4] Cayman" always fails verification.
Disconnecting either the 2nd, 3rd, 4th or 5th card gets rid of the problem and the remaining 4 cards mine perfectly fine, meaning all the slots/cable/cards are ok, but adding a fifth card will make "[0-4] Cayman" ALWAYS fail verification, even when it's the only card mining and all other cards are stopped. I'm using GUIminer 082011 Title: Re: [0-4] Cayman ALWAYS fails verification, regardless of card or slot Post by: DeathAndTaxes on November 05, 2011, 02:24:01 PM I have 5 cards hooked up to one machine right now. When I go to start all the cards up, the fifth card "[0-4] Cayman" always fails verification. Disconnecting either the 2nd, 3rd, 4th or 5th card gets rid of the problem and the remaining 4 cards mine perfectly fine, meaning all the slots/cable/cards are ok, but adding a fifth card will make "[0-4] Cayman" ALWAYS fail verification, even when it's the only card mining and all other cards are stopped. I'm using GUIminer 082011 What driver version, what OS? The older drivers had problem w/ more than 4 GPU in Windows. Title: Re: [0-4] Cayman ALWAYS fails verification, regardless of card or slot Post by: Fuzzy on November 05, 2011, 06:23:31 PM 11.9 resolves the Verification problem, but now I'm getting the Split Hashrate issue. (https://bitcointalk.org/index.php?topic=50397.0)
Title: Re: [0-4] Cayman ALWAYS fails verification, regardless of card or slot Post by: Fuzzy on November 06, 2011, 02:09:23 AM 11.10 either BSODs, crashed the VPU driver or GUI Miner
Installing Win7 x64 to see if anything helps. Gonna try CGminer afterwards. Title: Re: [0-4] Cayman ALWAYS fails verification, regardless of card or slot Post by: grubles on November 19, 2011, 09:51:11 AM You can't have more than 4 gpus in Windows.
Title: Re: [0-4] Cayman ALWAYS fails verification, regardless of card or slot Post by: DeathAndTaxes on November 19, 2011, 02:41:10 PM You can't have more than 4 gpus in Windows. Yes you can. I am running 8 right now. The older drivers were limited to 4. I am not sure which version lifted that cap to 8 but it was a while ago... 11.5? 11.6? Title: Re: [0-4] Cayman ALWAYS fails verification, regardless of card or slot Post by: cablepair on November 28, 2011, 11:53:44 AM have to tried to ditch guiminer and switch to cgminer?
it is much better at handling multiple gpus Title: Re: [0-4] Cayman ALWAYS fails verification, regardless of card or slot Post by: cablepair on November 28, 2011, 01:10:29 PM yeah it matters a lot.
32 bit windows sucks at handling multiple gpu setups |