Mining rig randomly shuts off?

[clonedone]

I finally got two of my 6990s hooked up and both of them are mining just fine now under windows 7.
but then randomly the whole computer just shuts off, but not completely.
the monitor no longer displays anything and i know they have stopped mining because i checked deepbit.


im using 11.4 cata, not sure about sdk, i never installed any so it might be what ever it is default
its also @ 100 percent cpu and 56 percent ram.

anyone know whats going on here?

[Cablesaurus]

Yes, your Power Supply is supplying insufficient power. You need a better PSU.

[eleuthria]

What size power supply are you running, and are the cards overclocked?  Sounds like the cards are crashing, and they're crashing in a way that Windows can't recover from.  Two 6990s require a MASSIVE power supply, especially if the machine isn't dedicated to mining meaning other components may be drawing a reasonable amount of power as well.

[rezin777]

If he bought the power supply from the build specs he listed before, he has ample power.

Unless it's defective. But it seems to be a very good unit.

[Tannke]

Do you have enabled the energy tweeks (shutdown monitor and sleep mode features)?

I had to disable them, that features may cause that kind of issues. 

[clonedone]

i got a 1250 watt power supply, planning on running three 6990s on it, they will not be overclocked however.

i already changed the sleep settings. anyone know how to hook up the third one using windows 7?

[grndzero]

Are you going through a regulating power strip or UPS?

Could be the power supply being sensitive to the incoming power.

[allinvain]

Single rail or multi rail power supply? If multi rail make sure you spread the load across all the available PCIE rails.

[clonedone]

yeah its connected to a power strip, as for rails im not sure what that means, but im using all but two of the pcie ports for power, since the 6990 needs 2 power cables each.

what should i do, connect it to the wall instead?

actually do you think logmein is messing with it? cus i left it alone for two hours and it hadnt shut off, then i used logmein to check up on it, and it shut off within an hour.

[allinvain]

yeah its connected to a power strip, as for rails im not sure what that means, but im using all but two of the pcie ports for power, since the 6990 needs 2 power cables each.

what should i do, connect it to the wall instead?

actually do you think logmein is messing with it? cus i left it alone for two hours and it hadnt shut off, then i used logmein to check up on it, and it shut off within an hour.

It could maybe possibly remotely cause a driver crash..also try to tone down on the aggressiveness of the miner in case the system being at 100% GPU load is somehow causing driver crashes. As for power supply how about you tell me what power supply specifically you have and I'll tell you if it has dual rails or single. OR you can google it

[clonedone]

OCZ ZX Series OCZ-ZX1250W 1250W ATX12V v2.2 / EPS12V SLI Ready CrossFire Ready 80 PLUS GOLD Certified Modular Active PFC Power Supply Compatible with Core i5 & i7

+12V Rails
    Single

thats the one.

i cant seem to stop it from being 100 percent cpu, i didnt put any flags (im using guiminer)

[ghost]

Single rail or multi rail power supply? If multi rail make sure you spread the load across all the available PCIE rails.

This post helped me tremendously. I have dual 6990s and an HX1000 power supply. The 6990s have an over-clock switch that raises the voltage and produces an extra 15% to my hash rates. It was causing the computer to freeze after a couple of minutes and I figured it might be overloading the power supply. Sure enough I didn't have the two cards spread evenly between the rails (in the case of the HX1000, it doesn't have rails but is kind of like 2 500 watt power supplies bundle together).

[allinvain]

Single rail or multi rail power supply? If multi rail make sure you spread the load across all the available PCIE rails.

This post helped me tremendously. I have dual 6990s and an HX1000 power supply. The 6990s have an over-clock switch that raises the voltage and produces an extra 15% to my hash rates. It was causing the computer to freeze after a couple of minutes and I figured it might be overloading the power supply. Sure enough I didn't have the two cards spread evenly between the rails (in the case of the HX1000, it doesn't have rails but is kind of like 2 500 watt power supplies bundle together).

I have the same power supply and even with a single 5970 it is still recommended that one spreads the load across the two 12v rails. I'm amazed the PSU handled two 6990 on the same rail. However when I think of it I am not surprised as I've read somewhere that the HX1000W is conservatively rated (ie it can deliver more than 1000W if pushed) and it really a 1200W PSU sold as 1000W (designed by an OEM called CWT)

[allinvain]

OCZ ZX Series OCZ-ZX1250W 1250W ATX12V v2.2 / EPS12V SLI Ready CrossFire Ready 80 PLUS GOLD Certified Modular Active PFC Power Supply Compatible with Core i5 & i7

+12V Rails
    Single

thats the one.

i cant seem to stop it from being 100 percent cpu, i didnt put any flags (im using guiminer)

That is more than enough to power two 6990s, unless of course the PSU is faulty. Do you happen to have a spare computer you can test it on?

[clonedone]

by testing do you mean just plugging it in and running regular computer parts? I can do that, but is there any other solution? i spent a lotta time putting that power supply in heh

[allinvain]

by testing do you mean just plugging it in and running regular computer parts? I can do that, but is there any other solution? i spent a lotta time putting that power supply in heh

That and also putting as much load on it as possible.

Also to ensure this is not a driver issue uninstall all the catalyst drivers, boot into safe mode and run driver cleaner (available for free on guru3d site or just google it) and remove all traces of the ATI drivers, boot back into windows and reinstall 11.4. If the problem persists then try downgrading to 11.3 (repeat the same procedure)

If even THAT does not work then something terribly wrong is going on. Check to make sure all the PCIE cables are solidly in place, and also do a memtest. Also keep an eye on your temps (for the 6990s) - possible overheat? Bad RAM would not cause the system to shutdown with no vide though (you'd get a blue screen) so I doubt it's the memory. So far I suspect either a faulty PSU or a catalyst driver issue.

[clonedone]

hmm well i had put in a fresh clean windows 7 with 11.4 cata and NO sdk, it seems fine but only for a couple of hours. im scared to logmein cus i dont wanna taint the testing. ill try out the psu on my other computer , but im afraid i dont have enough to overload it. i have 3 6990s but the third one wont fit into my computer case im gonna have to cut out a hole just for the third one.

thanks for your help though ill test the ram tomorrow and the cata if this problem persists. so far it has been running for an hour with no problem i only logmein once to start it up.

turns out i didnt need to use a dummy monitor with crossfire hope people make use outta this info.

Single rail or multi rail power supply? If multi rail make sure you spread the load across all the available PCIE rails.

This post helped me tremendously. I have dual 6990s and an HX1000 power supply. The 6990s have an over-clock switch that raises the voltage and produces an extra 15% to my hash rates. It was causing the computer to freeze after a couple of minutes and I figured it might be overloading the power supply. Sure enough I didn't have the two cards spread evenly between the rails (in the case of the HX1000, it doesn't have rails but is kind of like 2 500 watt power supplies bundle together).

glad someone made use out of this thread other than me.

ill give an update tomorrow so hopefully it can be useful

[ghost]

Single rail or multi rail power supply? If multi rail make sure you spread the load across all the available PCIE rails.

This post helped me tremendously. I have dual 6990s and an HX1000 power supply. The 6990s have an over-clock switch that raises the voltage and produces an extra 15% to my hash rates. It was causing the computer to freeze after a couple of minutes and I figured it might be overloading the power supply. Sure enough I didn't have the two cards spread evenly between the rails (in the case of the HX1000, it doesn't have rails but is kind of like 2 500 watt power supplies bundle together).

I have the same power supply and even with a single 5970 it is still recommended that one spreads the load across the two 12v rails. I'm amazed the PSU handled two 6990 on the same rail. However when I think of it I am not surprised as I've read somewhere that the HX1000W is conservatively rated (ie it can deliver more than 1000W if pushed) and it really a 1200W PSU sold as 1000W (designed by an OEM called CWT)

One of the cards was split between the rails, so one rail had 3 of the 4 PCIe cables plugged into it, and the other rail had 1. Even still, the power supply was pulling over 800 (I believe close to 900) watts from the socket.

[allinvain]

Single rail or multi rail power supply? If multi rail make sure you spread the load across all the available PCIE rails.

This post helped me tremendously. I have dual 6990s and an HX1000 power supply. The 6990s have an over-clock switch that raises the voltage and produces an extra 15% to my hash rates. It was causing the computer to freeze after a couple of minutes and I figured it might be overloading the power supply. Sure enough I didn't have the two cards spread evenly between the rails (in the case of the HX1000, it doesn't have rails but is kind of like 2 500 watt power supplies bundle together).

I have the same power supply and even with a single 5970 it is still recommended that one spreads the load across the two 12v rails. I'm amazed the PSU handled two 6990 on the same rail. However when I think of it I am not surprised as I've read somewhere that the HX1000W is conservatively rated (ie it can deliver more than 1000W if pushed) and it really a 1200W PSU sold as 1000W (designed by an OEM called CWT)

One of the cards was split between the rails, so one rail had 3 of the 4 PCIe cables plugged into it, and the other rail had 1. Even still, the power supply was pulling over 800 (I believe close to 900) watts from the socket.

Nice, you got yourself one serious space heater there However I'd be concerned running the PSU at 80 to 90% rated capacity. I think that will shorten its lifespan.

Did you also try to underclock the memory on those cards? You can save 20-40 watts per card doing so.


Hey btw, checkout this picture to see how the rails are distributed on the HX1000W:

http://forum.corsair.com/forums/showthread.php?t=70317

[allinvain]

hmm well i had put in a fresh clean windows 7 with 11.4 cata and NO sdk, it seems fine but only for a couple of hours. im scared to logmein cus i dont wanna taint the testing. ill try out the psu on my other computer , but im afraid i dont have enough to overload it. i have 3 6990s but the third one wont fit into my computer case im gonna have to cut out a hole just for the third one.

thanks for your help though ill test the ram tomorrow and the cata if this problem persists. so far it has been running for an hour with no problem i only logmein once to start it up.

turns out i didnt need to use a dummy monitor with crossfire hope people make use outta this info.

Single rail or multi rail power supply? If multi rail make sure you spread the load across all the available PCIE rails.

This post helped me tremendously. I have dual 6990s and an HX1000 power supply. The 6990s have an over-clock switch that raises the voltage and produces an extra 15% to my hash rates. It was causing the computer to freeze after a couple of minutes and I figured it might be overloading the power supply. Sure enough I didn't have the two cards spread evenly between the rails (in the case of the HX1000, it doesn't have rails but is kind of like 2 500 watt power supplies bundle together).

glad someone made use out of this thread other than me.

ill give an update tomorrow so hopefully it can be useful

I don't think you necessarily need to overload it. Even with those two 6990s you aren't overloading it. Just put as much strain on it as possible in a different system to see whether the fault lies with one of the components of the other system or with the PSU.

Btw, have you tried using something like VNC or RDP instead of logmein? I would be surprised of logmein caused all this.