Hey guys i need help with my rig... im a little desperate after 2 weeks of try and error...
i have the following setting:
3*radeon hd 7990
2* 1000W PSU
2*4gb RAM
AMD Athlon II x3
Windows 8 64bit
newest catalyst and app sdk driver
everything is set up with riser cables and enough box fans for good airflow...
im mining with cgminer and i tried the following three settings:
--scrypt -I 13 -w 256 -g 2 --gpu-fan 100 --thread-concurrency 8192
--scrypt -I 18
--scrypt -I 18 -g 1 -w 256 --thread-concurrency 24000
(these three work perfectly for a friends rig with 3hd7990, the difference is that he has an octacore cpu and 2*8gb RAM but that shouldnt make any difference right?)
while running my rig the temps are good .. constantly lower than 80°C... but after 10-30 minutes the system freezes.. and the last frame is visible but the screen doesnt get dark...
below are some photos of the freezing screen... i read in this post (the
https://litecointalk.org/index.php?topic=4996.0) that "Only disabling all ATI software and processes from booting with windows" solved the problem..but how do i do that and what exactly should i disable?
sometimes before freezing the gpu no.4 shows suddenly a temp around 500°C but the whole time before that it is around 75°C
and sometimes my cpu shows an high peak and the temp of gpu4 drops to 50°C ....
i already replaced the graphics card but this is still happening
am i making any other mistake that i cant see?
it would be so sweet to hear your opinion
edit...
I gotta run:
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NOT EDITED: I will try to do so later!
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*not edited yet*
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I will take a stab at this. Let's "work the issue".
Maybe this will help, I hope...see the PSU issue first. That is likely the issue. Or lack of Powered Risers, and or lack of secondary Video Molex outlet on mobo not having any juice (voltage) to it. Also is the motherboard designed to handle 3 such beasts as those 7990's
1st - 2*4gb RAM = 8 gig correct? If so then maybe with (3) 7990's Cards your under memory requirements.
Open up Task Manager on the Task Bar at the bottom of your desktop. Then click the PROFORMACE tab in Task Manager.
That will bring up both the CPU and Memory usage data and charts. Note how much memory is being taken by the entire system the first moments after the rig is mining. This may be your problem - not quite enough memory. But maybe not?
I don't know how much memory is on the 7990's - let's look:
http://www.amd.com/us/products/desktop/graphics/7000/7990/pages/radeon-7990.aspxOKAY:
Questions:
ARE YOU USING "powered risers" and are they getting voltage (plugged in to the PSU)
And is the motherboard PCIexpress secondary voltage OUTLET PLUG (Molex likely) for extra Video Cards have a Molex cable or whatever feeding the Mobo extra juice??? Your system is running Hot Rod style cards btw, those such energy like crazy!! (a PCIexpress secondary voltage OUTLET PLUG (Molex likely) for extra Video Cards may or may not be on your board). If none is there and no powered risers either it's obvous your running a very dangerous fire hazard to say the least, and maybe why it's crashing quickly through voltage drops which triggers sky high amperage as a result (massive heat issues). And fire hazzard galore in your case, IF no powered risers plus NO secondary PCIexpress secondary voltage OUTLET PLUG on board your mobo
In your case you need BOTH I would hazzard to merely guess. Others may chime in to assist but running those beasts will result in massive current flows.
Is your power supply big enough? High Quality (Corsair Gold?, and highly rated model ? ), Is it a Single Rail, or more than one rail? Are you drawing too much from one rail on a dual rail or multi-rail PSU?
Again, Is your power supply big enough? - That's very critical. I would hazzard to even guess.
I just reviewed the link below again. (while working this issue):
Your cards require 470 watts to 490 watts EACH, according to those that reported testing them on their rigs. WOW!!!
Toss in your motherboard, hard drive, and other attached drives and what not and well one needs a 20% reserve capacity too at a minimum for safety (don't run a PSU at max output 24/7) so a 2000 watt PSU is required here!!! Or damn close to 2000watts. Or say 1 850 watt PSU for the mobo and 1st card. Then another 1200 watt for the 2nd two 7990's. That may result in solving this issue if your underpowered.
LOL, okay, well AFTER THE FACT of writing the above I see you have two 1000 watt power supplies. So your likely running two cards off one of those PSUs correct ? If so your up against the wall so to speak with it's peak output. If not a damn fine PSU it wont likely be stable, much less long term reliable from demanding it's peak output be met 24/7.
Try at least a 1200 Watt power supply (PSU) on those 2 cards that one is attached to and powering. IF THAT DOESN'T solve it then move on below. Better off though getting bigger than 1200 watt PSU since really those cards are far and away big drains. Gold Rated Corsair that is very well reviewed by users!!! Or whatever that size that is best reviewed whatever brand(s) are. But no way use any cheap PSU's that are not at least Gold Rated here.
Trouble Shootings sometimes a bitch. I worked here for you cause electrical trouble shooting is one thing that turns me on, sadly...
Do you have 3 7990's or four ? Not so clear in that above? I take it just 3 cards from further review! I base all this on 3 cards. And wow that's a beast of a rig in terms of power requirements and energy costs. But hey it's all about hash #'s too now that every coin is tough to mine and growing in value so there ya go!
NEXT:
7990 = 6GB of GDDR5
So 6gig x 3 = 18gig.
That's way more than say my 7950's (the most energy efficient cards to use). 7950's have 3gig as I recall each, or 9gig total for the 3 card rig I have.
My memory consumption with my VPN Application & Service running for encypted, secure internet, plus Kaspersky Internet 2013 and Malware Antimalware Lifetime, along with C3 GUIMiner's running all together while mining
all together in the Performance tab inside Task Manager equals = 3.21GB
Hum. I thought it would be a bit more memory consumption.
I run (2) 8 gig sticks = 16gig total since I got them free with matching motherboards and wanted spare motherboards which already came to be needed since one board ended up bad quickly.
So at any rate I don't know about this.
At first I thought maybe it's not enough memory but now not so sure.
Might want to re-install your AMD Video Drivers. Did you get them straight from AMD? That's the ticket. Same for the Uninstaller from AMD too.
Any Screen Freezes and Hard Shutdowns can cause the Video drivers damage, and until re-installed, or simply clicking the uninstaller inside control panel and then clicking repair instead of uninstall will likely fix any driver issues. If not use the AMD uninstaller app, and then do a fresh clean install again. Maybe run Ccleaners Registry cleaner though first to clear out the old left over AMD crud. But if you don't know what your doing then registry cleaning can be very dangerous.
Same for regedit and manual registry cleaning.
At any rate maybe Drivers, or not enough memory even though it is seeming possibly okay in the Performance tab. Or bad memory.
I never ran cgminer in command line by itself. But instead in GUIMiner-Scrypt which is well EASY. But I did wonder why your first card is set at 8192
but the 3rd one is at 24000, and the 2nd card doesn't display any data on your post??? :
--scrypt -I 13 -w 256 -g 2 --gpu-fan 100 --thread-concurrency 8192
--scrypt -I 18
--scrypt -I 18 -g 1 -w 256 --thread-concurrency 24000
I have read and reviewed many posts on cgminer and it's real picky/different than using it inside GUIMiner-scrypt when it comes to I (intensity settings) and also sometimes even Thread Concurrency settings.
Your I (Intensity setting) that seems to get a lot of folks in mesery with cgminer if they set it too high. Results in hardware errors. Evidently it must be lowered to result in no hardware errors for best mining results, plus of course even to resolve cgminer freezing up/screen freezes, etc.
-1 13 sounds correct for my 7950's as about as far as one is said to safely go with cgminer in the command line by itself, as I recall but am not too sure
Where as with cgminer inside GUIMiner-Scrypt I can usually run all the way dialed up to I 20, or at least I 19 without too many Stales resulting (<~3%). Much higher then I reduce the Intensity, but inside the GUI of GUIMiner for cgminer we have no reporting of hardware errors itself. I still wont switch to the bare cgminer since GUIMiner-Scrypt is so nice, easy, stable and well I can quickly switch from pool to different coins on the fly or even mine three different coins and three different pools quite easily. I don't know if cgminer alone can do that trick near as easy, I doubt it. Oddly some settings such as I for cgminer vary drastically if used with GUIMiner-scrypt compared to using it alone in the command line setting.
The I 18 setting of yours may be far too high, or not
Verify that if your not certain.
And why??? do you have the 1st card at I 13 but the 3rd at I 18, makes no sense if their identical cards or even the same series (7990's)
The best thread-concurrency for all my many scrypt mining has been 24000 btw, but that is for 7950's and whats best for them. See below at the link to find your ideal settings or at least what's been effective. That's ideal. But 8191 is far too low for say my 7950's, let alone your fire breathing hot rod 7990's! Just remember that thread-concurrency must always divide by 64 resulting in a whole number (no fractions) for smooth mining results, for whatever reason(s).
See the Link below and other threads (do a search) to find the best cgminer settings for your 7990's. That also may be where the issue is unless your certain your setting are correct. But for the life of me I know 8192 is not correct ?!!?
The -g 2 what is that??? GPU threads maybe? For the correct settings there see the link below as well but even though some mining software sets that at 2 GPU threads for my 7950's they work ever so slightly better at 1 GPU thread. Not sure why or whatever but yours may well be very different for that settings. See below.
You got some trouble shooting to do. Work the problem. One step at a time. Verify everything down this list if need be.
The first place I would zoom to is test the rig again and check in the Performace tab for total memory usage and what's available still. That likely will check good? Maybe, or NOT!!!
Then adjust the -I down to 13 or even 12 for ALL Cards, just to see if that helps, if so then find the correct I settings for your card. In fact find the correct settings (VERIFY below) to make certain that is correct before doing any more risky settings adjustments!
https://litecoin.info/Mining_Hardware_Comparison...
7990, CGAX-7999 1125 1075 1700 cgminer v 2.11.4 -I 13 --thread-concurrency 14336 84C, Catalyst 13.1,
https://imageshack.us/scaled/large/607/proof7990.png7990, CGAX-7999 1150 1090 1725 cgminer v 3.1.0 -I 13 -g 1 -W 256 --thread-concurrency 8192 87C, Catalyst 13.1,
http://img24.imageshack.us/img24/5343/imagetfc.jpg7990, GV-R799D5-6GD-B 1250 980 1350 1.050 N cgminer 3.4.0 -I 13 -g 2 -w 256 --thread-concurrency 14336 --gpu-powertune 20 Windows 8, 70-80C, i5-2500k, ASUS P8P67
7990, 102-C47601-00-AT 1325 1025 1500 1.075 N cgminer 3.4.0 -I 20 -g 1 --thread-concurrency 24000 --gpu-powertune 20 Windows 7 2061, 66-79C, 6Z77-V DELUXE, 3770K, 16GB RAM
(M379B5273DH0-YK0), 2 x 7990, CoolerMaster Sniper case, AX1200 PSU, 660-670kH/s per GPU, 113-C47601M0-101 firmware
7990, R7990-6GD5 1344 965 1360 1.050 U 470 cgminer 3.7.2 -I 13 -g 2 -w 256 --thread-concurrency 8192 Windows 7, 87C, Celeron G530
7990, AX7990 6GBD5-M4DH 1363 N 490 cgminer 3.7.2 500GB HDD, RAMdrive, 80C, i7-4770K, 16GB RAM, 2x7990 @ 2721kH/s
7990, HD7990-6GD5 1518 1100 1480 cgminer 3.2.2 -I 13 -g 2 -w 256 --thread-concurrency 8192 --gpu-powertune 10 60C, Catalyst 13.9, FX-8320, 3x7990, watercooled
Caveat emptor - let the buyer beware!
