Getting ahead of arriving miner parts... (with 25LTC bounty)

[zif33rs]

yea...surprisingly..that setting seems to be the best. I have tried 21712 and a few others...machine just seems to run "smoother" at this setting.  http://ck.kolivas.org/apps/cgminer


I even went so far as to delete EVERYTHING From cgminer.conf and then run the cmd prompt with just --scrypt command....after you enter your server, worker and and password you can tweek all the settings and then save config. restart and then set gpu core and mem speeds...then set gpu to auto. I do this because cgminer will downclock your gpu's once they reach or exceed the target temp.

config should look something like this bro.

Code:

{
"pools" : [
	{
		"url" : "YOUR SERVER",
		"user" : "USERNAME,
		"pass" : "PASSWORD"
	}
]
,
"intensity" : "13,13,13,13",
"vectors" : "1,1,1,1",
"worksize" : "256,256,256,256",
"kernel" : "scrypt,scrypt,scrypt,scrypt",
"lookup-gap" : "0,0,0,0",
"thread-concurrency" : "8192,8192,8192,8192",
"shaders" : "0,0,0,0",
"gpu-engine" : "1050-1178,1050-1178,1050-1178,1050-1178",
"gpu-fan" : "75-85,83-100,75-85.75-85",
"gpu-memclock" : "1028,1028,1028,1028",
"gpu-memdiff" : "-150,-150,-150,-150",
"gpu-powertune" : "20,20,20,20",
"gpu-vddc" : "0.000,0.000,0.000",
"temp-cutoff" : "95,95,95",
"temp-overheat" : "85,85,85",
"temp-target" : "75,75,75",
"api-port" : "4028",
"expiry" : "120",
"gpu-dyninterval" : "7",
"gpu-platform" : "0",
"gpu-threads" : "2",
"hotplug" : "5",
"log" : "5",
"no-pool-disable" : true,
"queue" : "1",
"scan-time" : "60",
"temp-hysteresis" : "3",
"shares" : "0",
"kernel-path" : "/usr/local/bin"
}

[cptmooseinc]

Oh ok that's the problem. That site was down when I tried it yesterday. I'm not setting target temps just yet as I still gotta get them under control. I got them lower on rig #1 to around 80C. Not sure what #2 will be yet. I left stock thermal paste on them to see what they bring.

Phew. So close to the finish line I can feel it. Thanks for the help guys!

[cptmooseinc]

Upgraded to cgminer 2.11.4 on the Windows 8 rig. cgminer still crashes instantly. Going to upgrade 12.8 drivers to 13.2 now (even though 13.3 is latest, since zif33rs seems to have it working on 13.2, I'm going to go along with that). So looks like Win8, 12.8 drivers, and cgminer do not get along. Let's hope that 13.2 drivers get along on my system. If not, then I'll probably have to downgrade to Win7...

[Rawted]

Upgraded to cgminer 2.11.4 on the Windows 8 rig. cgminer still crashes instantly. Going to upgrade 12.8 drivers to 13.2 now (even though 13.3 is latest, since zif33rs seems to have it working on 13.2, I'm going to go along with that). So looks like Win8, 12.8 drivers, and cgminer do not get along. Let's hope that 13.2 drivers get along on my system. If not, then I'll probably have to downgrade to Win7...

I would downgrade to win7 anyways. 12.8 legacy and 13.3 beta have worked flawlessly for me on all systems.

[cptmooseinc]

Rig #2 is operational with 5 cards on Win8 using 13.2 beta drivers. Getting a little over 500kH/s with the cards using the settings that zif33rs suggested. I'm guessing it's a power issue now with the riser cables to get the extra kH/s out of the cards. I have 4 powered riser cables on the way (should be here tomorrow or Tuesday). 4 cards were pushing much higher hashes and they dropped when a 5th card came on, hence why I expect the motherboard is being drawn too heavily on. I expect that hashes to jump to possibly 600kH/s+ once some powered risers get added.

Is there a limit to how many powered risers I should put on a board?

-Moose

[zif33rs]

Alright Moose!!   Good to hear man. I think that you have 5 cards running under windows is a feat in and of itself. I had heard 4 was the max for windows builds. Now that you have them up and running try tweaking those settings I gave out. Higher intensitys...ramp em up once you find stable. Also your memory speeds probably need to be adjusted. Crank em up. adjust one card at a time till stable...move to next. 2500kh/s is not bad tho.  

Put on as many as the OS will accept IMO.

Nice powersupply calc from newegg. Does not go up to 5 cards tho.

http://images10.newegg.com/BizIntell/tool/psucalc/index.html?cm_sp=SubCat48_DesktopGraphics_left-_-PowerSupplyFinder022610-_-http%3a%2f%2fpromotions.newegg.com%2fproductfinders%2fpowersupply.jpg

grats
zif

[cptmooseinc]

Bought powered risers off of cablesaurus' eBay page early last week. Still waiting for them to arrive. He claimed they shipped on the 19th but tracking shows he didn't really bring them to the post office until the 22nd. Being set back a few days. Upgraded the Win8 miner to cgminer 3.0 and am getting around 525kH/s out of it. Hoping that powered risers come soon to see if hash rate can be boosted. Honestly, I think I'd like to get extra kH/s out of it and then back off the powertune to keep it hashing where it's at. These cards seem to stay around 86-90C all the time. They've got a big fan running on high blowing air through them and the apartment is kept at 74F, not sure why they're getting so damn hot all the time. All the GPUs in rig #2 have stock thermal paste and aren't getting any better temps than the ones I changed paste on in rig #1...

[txmasut]

Bought powered risers off of cablesaurus' eBay page early last week. Still waiting for them to arrive. He claimed they shipped on the 19th but tracking shows he didn't really bring them to the post office until the 22nd. Being set back a few days. Upgraded the Win8 miner to cgminer 3.0 and am getting around 525kH/s out of it. Hoping that powered risers come soon to see if hash rate can be boosted. Honestly, I think I'd like to get extra kH/s out of it and then back off the powertune to keep it hashing where it's at. These cards seem to stay around 86-90C all the time. They've got a big fan running on high blowing air through them and the apartment is kept at 74F, not sure why they're getting so damn hot all the time. All the GPUs in rig #2 have stock thermal paste and aren't getting any better temps than the ones I changed paste on in rig #1...

I had the same issue with cablesaurus.  I paid for expedited shipping and it still took him 3-4 days to get them shipped. $200 for 10 powered risers was insane with the shipping times.  I've gone ahead now and ordered 300 from china through my brother(lives in china and speaks mandarin) for the future so I might be able to sell some for much cheaper than cablesaurus.

[cptmooseinc]

If they help my kH/s on my rigs enough, I might be interested. You should list them on eBay when they arrive and provide the link. If you want to just sell them on the forum, I'd buy a much lower quantity. I have 6 rigs I'm trying to build total right now. The other 4 won't be until after my vacation I'm going on in two weeks.

-Moose

[wmikrut]

Same thing here... I think he makes them on an as-needed basis.

However, I can say that every cable I have ordered from him has worked flawlessly.  
I used one other vendor who provided two faulty cables... (but replaced them quickly).

[cptmooseinc]

Bounty will be divided up and paid out sometime on Wednesday. I need to decide how much to pay to which people. Not everyone who responded will get a donation. Thanks everyone for your help! (:

-Moose

[rbbrdckybk]

You may want to try removing one GPU from your rig, just to see what your hashrate looks like with 4 cards. I suspect that you'll see the same hashrate with 4 GPUs that you're currently seeing with 5. Windows does some funny things when you go beyond 4 GPUs, and having the 5th card in your rig might not be helping at all.

I run a few rigs with 3x 7950, and I get hashrates of just over 1900 kH/sec total. If I added a 4th GPU, I'd expect to see the same hashrate that you're currently seeing with 5.

Rig #2 is operational with 5 cards on Win8 using 13.2 beta drivers. Getting a little over 500kH/s with the cards using the settings that zif33rs suggested. I'm guessing it's a power issue now with the riser cables to get the extra kH/s out of the cards. I have 4 powered riser cables on the way (should be here tomorrow or Tuesday). 4 cards were pushing much higher hashes and they dropped when a 5th card came on, hence why I expect the motherboard is being drawn too heavily on. I expect that hashes to jump to possibly 600kH/s+ once some powered risers get added.

Is there a limit to how many powered risers I should put on a board?

-Moose

[Eric Rye]

I'm not sure how you're going with this as the thread is a bit hard to follow. I have a Powercolor 7950, the most I can get out of it is 630 kh/s using the following settings:

Code:

{
"pools" : [
	{
		"url" : "server",
		"user" : "username,
		"pass" : "password"
	}
]
,
"intensity" : "20",
"worksize" : "256",
"kernel" : "scrypt",
"thread-concurrency" : "22336",
"shaders" : "2048",
"gpu-engine" : "0-1050",
"gpu-fan" : "0-100",
"gpu-memclock" : "1250",
"gpu-memdiff" : "0",
"gpu-powertune" : "20",
"temp-cutoff" : "95",
"temp-overheat" : "85",
"temp-target" : "75",
"algo" : "scrypt",
"api-port" : "4028",
"auto-fan" : true,
"auto-gpu" : true,
"expiry" : "120",
"gpu-dyninterval" : "7",
"gpu-platform" : "0",
"gpu-threads" : "1",
"log" : "1",
"no-pool-disable" : true,
"queue" : "1",
"scan-time" : "1",
"scrypt" : true,
"temp-hysteresis" : "3",
"shares" : "0",
"kernel-path" : "/usr/local/bin"
}

Deviation from some of those settings by even a little bit causes the hashrate to drop a lot. I hope this is of some use.

[cptmooseinc]

I managed to get 638kH/s roughly out of it running Windows 8 with 5 cards with something like 950 engine, 1490 mem clock, and +10 power tune. Can't used powered risers with these settings though as it makes it draw too much power and trip the powerstrip. It ran stable as hell though on my non-powered risers. It just pumps too much heat for my little apartment's A/C to deal with. When I get a place to put all my rigs in May, I'm going to attempt exhausting to the atmosphere to use less A/C and run with the optimal settings.

[cptmooseinc]

I can't remember if thread concurrency was 8192 with I:13 or 21712 with I:20. I was using cgminer 3.0 for sure though.

[cptmooseinc]

Here's who is getting parts of the bounty:

zif33rs: 10 LTC - Sent Already, Tx Hash: 8207582fc1c67f8248068b1ba245c98ca530b96890ec0638412812ae4ef78d3b
LivesUnderTheBridge: 5 LTC - Sent Already, Tx Hash: 2cdc7aa5cd0c4f8e0f2a00775d9b3e45b9a9ee5cc87c839f22fabb67f8bf588e
Ryu.Hayabusa: 5 LTC - Sent Already, Tx Hash: 1ab49349ce29e289ba7ee6e27e7bd6c96ced0a82e8a34f9d77b300aa535b628a
laSeek (he helped me through BTC-e PMs): 5 LTC - b0184e01e2e8b37566e89c13d34ad3f2befa153410c7bc0440e635ed30c7ddc0

Thanks for the help everyone! Enjoy your part of the bounty and please don't be angry if you did not get any bounty payout. I paid out as I felt was fair.

Thanks!
-Moose

[zif33rs]

Dude...10 ltc received 


Thanks very much Moose. Glad I could help.

zif

[Ryu.Hayabusa]

That's where the 5 came from, thank you!