(LTC Reward) Gigabyte 7950 - Settings Nightmare

Datto

full member

Activity: 140

Merit: 100

Thanks for your settings

elgeo

full member

Activity: 200

Merit: 100

Quote from: Chiz on May 05, 2013, 09:05:53 PM

Alright I am trying so many different combinations of settings for the 7950 in CGMiner from this site here
https://github.com/litecoin-project/litecoin/wiki/Mining-hardware-comparison#wiki-ATI_AMD_GPUs

I already did the MAX_ALLOC_PERCENT 100 thing in just a normal CMD (btw I am on Windows)
but first off, I cant have a thread concurrency of over 11,000, I get the disabling gpu/thread kernel error, even though it says 22400 when I do the auto tune type test for it. So Idk the problem there.

Tells me Memory click of 1600 is outta the safe zone, I got it to over 600 at one point but the thing got to 95 damn degrees, even on Intensity 16, I got it up to like 78-80 degrees. Can you guys help me figure out why it's getting so damn hot, btw when it does or I change some of these settings, the card just locks up and I have to reboot. So really would like answers/settings, it's the Gigabyte 3 fan 7950, using latest CGminer, my .bat I just keep switching around. Getting annoyed

25 LTC reward to whoever gives me the best solutions (if its a tie I'll split it up accordingly)

EDIT: Also, when I change the memory inside of CGMiner when it's running, the display I have hooked up to it goes black and my mouse freezes on the display thats hooked up to my Nvidia card
EDIT: Like right now, I have it working. If I just leave the stock clock and mem at 1000/1250 and 10600 threads at an intensity of 18, I get almost 600K/hash but the temp is 84C, like this is ridiculous.

use setx GPU_MAX_ALLOC_PERCENT 100 on window
mine cgminer settings for ubuntu is
--gpu-engine 930 --gpu-memclock 1250 --auto-fan --temp-target 78 --lookup-gap 2 -I 18 -g 1 -w 256 --thread-concurrency 24000

and i have 600 kh/s with no HW errors

good luck...

btw mine is saphire with cpu at 810 mhz

FullLife

hero member

Activity: 503

Merit: 500

Quote from: Wepp on May 06, 2013, 12:16:05 PM

Regarding the MAX_ALLOC_PERCENT environment variable:

This setting is CASE SENSITIVE! I got stuck on this for a while. Go to your Environment Variables Settings panel:
Click the Start Button
In the search box type "var" without quotes.
Choose the "Edit the system environmental variables" option.
Click on [Environment Variables...]

Verify that MAX_ALLOC_PERCENT is present in ALL CAPS with a value of 100.

This will allow you to increase the thread-concurrency.

Wow, I can't believe it was something as simple as that! I have literally tried everything I can think of to figure out why the hell I couldn't get any thread concurrency above 8192 to work in cgminer. You are the man! What's your LTC address? I'm gonna send you some.

0150r

newbie

Activity: 58

Merit: 0

I haven't seen much discussion on cooling here...If you have the card running inside a case with poor cooling, it will surely get hot. When I had a 7950 inside my gaming pc before the rest of my parts arrived, it would overheat and turn off. Cooling is much more of an issue with LTC mining vs BTC mining.

This is how my miner is set up right now. 3 Gigabyte 7950's spaced apart in a milk crate with a box fan blowing air in from outside. I live in San Diego so the outside air is pretty warm (I live inland, not by the coast).
http://farm8.staticflickr.com/7454/8730220674_0a0f6781fd.jpg

The cards run between 65 and 70 with my current config getting 1.773mhash/sec. I can crank it up an extra 150-200khash/sec by increasing the gpu-mem speed, but I like my fans running slower/quieter. I used to run with constant fan/gpu values and it would yield better temps at night (58-62*) when the outside air was cooler, but with the auto-fan and auto-gpu, it will keep it 70* or less and turn the fans down.

Here is my config:

Code:

{
"pools" : [
	{
		"url" : "POOL HERE",
		"user" : USER NAME HERE",
		"pass" : "PASSWORD HERE"
	}
]
,
"intensity" : "20,20,20",
"vectors" : "1,1,1",
"worksize" : "256,256,256",
"kernel" : "scrypt,scrypt,scrypt",
"lookup-gap" : "2,2,2",
"thread-concurrency" : "24768,24768,24768",
"shaders" : "1792,1792,1792",
"gpu-engine" : "0-1000,0-1000,0-1000",
"gpu-fan" : "0-85,0-85,0-85",
"gpu-memclock" : "1000,1000,1000",
"gpu-memdiff" : "0,0,0",
"gpu-powertune" : "0,0,0",
"gpu-vddc" : "0.000,0.000,0.000",
"temp-cutoff" : "85,85,85",
"temp-overheat" : "80,80,80",
"temp-target" : "70,70,70",
"api-port" : "4028",
"auto-fan" : true,
"auto-gpu" : true,
"expiry" : "15",
"gpu-dyninterval" : "7",
"gpu-platform" : "0",
"gpu-threads" : "1",
"hotplug" : "5",
"log" : "5",
"no-pool-disable" : true,
"queue" : "1",
"scan-time" : "15",
"scrypt" : true,
"temp-hysteresis" : "3",
"shares" : "0",
"kernel-path" : "/usr/local/bin"
}

p4xil

full member

Activity: 214

Merit: 100

delete any *.bin files in cgminer folder and try again.

logicus

newbie

Activity: 57

Merit: 0

I try

Code:

color 07
setx GPU_MAX_ALLOC_PERCENT 100
setx GPU_USE_SYNC_OBJECTS 1
cgminer --scrypt -o stratum+tcp://stratum.give-me-ltc.com:3333 -u user.1 -p 1 --thread-concurrency 24000 --lookup-gap 2 --gpu-engine 1155 --gpu-memclock 1250 --gpu-powertune 20 -w 256 -I 19 -g 1

but i only get

Code:

Error -5: Enqueueing kernel onto command queue. (clEnqueueNDRangeKernel)

I add 1GB RAM,try TC 16384 and 21712, but problem is still Sad

Now i mining with old settings --thread-concurrency 10240 -I 13 -g 2 -w 256 1140/1420 608kh/s

p4xil

full member

Activity: 214

Merit: 100

Quote from: logicus on May 11, 2013, 10:50:38 AM

I bild new PC with 1xGigabyte 7950 GV-R795WF3-3GD
The new card is 1x6 + 1x8 pin power
1.25V 1000/1250
I install win 7 x64,MB drivers and latest drivers from amd.com
Download and install Trixx.
Flash VGA bios from FX1 to F43 with winflash http://www.overclock.net/t/1353325/tutorial-atiwinflash-how-to-flash-the-bios-of-your-ati-cards

I make 2 bat files
start1.bat:
setx GPU_MAX_ALLOC_PERCENT 100
setx GPU_USE_SYNC_OBJECTS 1

and
start2.bat:
timeout 25
color 07
cgminer --scrypt -o stratum+tcp://stratum.give-me-ltc.com:3333 -u user.1 -p 1 --shaders 1792 --thread-concurrency 10240 -I 13 -g 2 -w 256

I put two files in cgminer's folder,make 2 shortcuts and put then in windows Startup

I open Trixx and set 1140 core and 1420 memory.Save in profil 1.
Set custom fan profill 70% 70 C,100% 80C.
Set Trix start with Windows.
I restart pc and after 40s vga start mining LTC with 608Kh/s.

P.S.
with "--thread-concurrency" over 11000 cgminer wont start.
Power "on the wall" is 295W at 1.09 70%fan 70C and 330W at 1.25 80%fan 73C

PC
MB G33/RAM 2GB/CPU C2D 5300/HDD 500GB 2,5"/7950 GV-R795WF3-3GD/Corsair TX650W

you can not go over 11000 TC because you use -g 2
just make one BAT file with this config:

Code:

color 07
setx GPU_MAX_ALLOC_PERCENT 100
setx GPU_USE_SYNC_OBJECTS 1
cgminer --scrypt -o stratum+tcp://stratum.give-me-ltc.com:3333 -u user.1 -p 1 --thread-concurrency 24000 --lookup-gap 2 --gpu-engine 1155 --gpu-memclock 1250 --gpu-powertune 20 -w 256 -I 19 -g 1

This gives me 670 kh/s on all WF3 cards ... I have 9 now ... flashed with F43 BIOS.
https://forum.litecoin.net/index.php/topic,2641.0.html

P.S.: you can also try TC 16384 and 21712. It works even better for some. I got 20 kh/s more per GPU with 16384 but I also got around 5 HW errors/day, so it seems 24000 is optimal for my setup.

poohbah

newbie

Activity: 59

Merit: 0

My MSI and Sapphire 7950's run well at the following clock/voltage combos, depending on the heat in the house.

950v/950mhz
975v/1025mhz
1000v/1050mhz

cgminer gets me about 500khash each (config #1 below) in a closed case system at the lower settings with ~70C/75C, and 1100khash at the higher settings (also config #1 below), depending on the room temp. A single card can reach much higher khash with lower temps, but you should try these voltage/core clocks. Memory is 1500mhz @ 1.6v.

This cgminer config leaves the system more usable:
"intensity" : "13,13",
"kernel" : "scrypt",
"gpu-threads" : "2",
"thread-concurrency" : "8192,8192",
"lookup-gap" : "2,2",
"scrypt" : true

This cgminer config gives about 50-60 higher khash per card, at the cost of system usability:
"intensity" : "18,18",
"kernel" : "scrypt",
"gpu-threads" : "1",
"thread-concurrency" : "20992,20992",
"lookup-gap" : "2,2",
"scrypt" : true

logicus

newbie

Activity: 57

Merit: 0

I bild new PC with 1xGigabyte 7950 GV-R795WF3-3GD
The new card is 1x6 + 1x8 pin power
1.25V 1000/1250
I install win 7 x64,MB drivers and latest drivers from amd.com
Download and install Trixx.
Flash VGA bios from FX1 to F43 with winflash http://www.overclock.net/t/1353325/tutorial-atiwinflash-how-to-flash-the-bios-of-your-ati-cards

I make 2 bat files
start1.bat:
setx GPU_MAX_ALLOC_PERCENT 100
setx GPU_USE_SYNC_OBJECTS 1

and
start2.bat:
timeout 25
color 07
cgminer --scrypt -o stratum+tcp://stratum.give-me-ltc.com:3333 -u user.1 -p 1 --shaders 1792 --thread-concurrency 10240 -I 13 -g 2 -w 256

I put two files in cgminer's folder,make 2 shortcuts and put then in windows Startup

I open Trixx and set 1140 core and 1420 memory.Save in profil 1.
Set custom fan profill 70% 70 C,100% 80C.
Set Trix start with Windows.
I restart pc and after 40s vga start mining LTC with 608Kh/s.

P.S.
with "--thread-concurrency" over 11000 cgminer wont start.
Power "on the wall" is 295W at 1.09 70%fan 70C and 330W at 1.25 80%fan 73C

PC
MB G33/RAM 2GB/CPU C2D 5300/HDD 500GB 2,5"/7950 GV-R795WF3-3GD/Corsair TX650W

Spetznaaz

newbie

Activity: 56

Merit: 0

I would almost guarantee this will solve your problem, a thread i wrote yesterday: https://bitcointalksearch.org/topic/low-hashrate-on-7970-scrypt-under-700khs-heres-what-to-do-200777

If it works don't worry about the reward though cause i'm not the first to suggest this

Cryptocables

full member

Activity: 270

Merit: 220

CQ - I make High Voltage glowy things.

Quote from: Chiz on May 05, 2013, 09:05:53 PM

25 LTC reward to whoever gives me the best solutions (if its a tie I'll split it up accordingly)

OP, are you backing out of the reward? :P

logicus

newbie

Activity: 57

Merit: 0

No one told us how many System RAM you have Grin

here is some info https://bitcointalksearch.org/topic/m.1256502
"The memory requirements for 7xxx cards are also higher because of larger thread_concurrency values, for instance a thread_concurrency of 24000 means 1.5GB system RAM per card is required"
"Set thread_concurrency to somewhere slightly below 64 * bus_width_of_card_in_bits. So, for a 7950, that would be 64 * 384 = 24576; ideal values are 21712 or 24000"

Are you flash you cards?

Ryu.Hayabusa

member

Activity: 84

Merit: 10

Those temps sound insanely high for stock. The only thing I can recommend beyond getting a replacement card is to get some high quality thermal paste and replace the crap that is currently on it.

Chiz

newbie

Activity: 42

Merit: 0

Quote from: Ryu.Hayabusa on May 07, 2013, 02:30:44 PM

I'm thinking there might be an issue with the cooler on the card. What temps do you get at Intensity 20 for stock clocks?

Well since it has to run on stock clocks, at 20 it will get to 93-95, I can hear and see the fans running. But the voltage is stock to at 1.225 I believe.

Also problem if you anyone can help me, sometimes letting it run all night, I wake up and I noticed my screens have frozen ( only assume the card has crashed) but the PC doesnt shut down, is there a way to set it so my PC resets or CGminer resets when this happens (which doesnt really help cause if the card is crashing, I cant see it opening CGminer again) any help in this field helps a lot

Ryu.Hayabusa

member

Activity: 84

Merit: 10

I'm thinking there might be an issue with the cooler on the card. What temps do you get at Intensity 20 for stock clocks?

Chiz

newbie

Activity: 42

Merit: 0

Well right now my intensity is 19 and my thread concurrency is 21712, Intensity isnt 20 cause the card pushes 90 degrees if I go that route, righyt now its 86 at 19. I used AMD catalyst to change the engine and clock settings, thats the problem, maybe MSI Afterburner will work better. Or maybe I have to do this bios flashing thing first to help resolve these issues.

Ryu.Hayabusa

member

Activity: 84

Merit: 10

You're better off using the ATI control panel or another tool such as Sapphire TRIXX or MSI Afterburner IMO. Try setting the Core to 1100 MHz and Mem to 1500MHz, and set the powertune to 20%. Set thread concurrency to 23777 or 22111. Also set Intensity to 20.

Chiz

newbie

Activity: 42

Merit: 0

My Gigabyte 7950 is the three fan one with I believe a locked voltage, will flashing the bios still help? No one told me how important System RAM was, I couldnt get thread concurrency over 10k with 2gigs, put a 4gig stick in and I am at 21712 and now I get no HW errors which is great. But card still runs at 84 degrees to pull around 600 K/hash, probably cause of the voltage and I still cannot change the memclock without the card crashing, maybe I have to overclock it in MSI, catalyst worked I think but when I put those same overclock settings (and even without) in CGminer, soon as I launched it the card froze up and I had to reboot.

logicus

newbie

Activity: 57

Merit: 0