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Hello!
I am trying to get my mining rig with 3*R9 280X + R9 290 running.
The 280X's work fine. To eliminate the possibility of the other cards causing any trouble i only have my 290 installed right now.
My driver is the latest Catalyst Software Suite from the 12/18/2013 --> http://sites.amd.com/us/game/downloads/Pages/radeon_win8-64.aspx (http://sites.amd.com/us/game/downloads/Pages/radeon_win8-64.aspx)
Mining software: cgminer-3.7.0
OS: Win 7 Home premium 64 bit
MB: ASRock 990FX Extreme3
Card: Sapphire Radeon R9 290
System Ram: 2GB
CPU: AMD Athlon II X2 250

Now to my problem:
If i run the card with intenity 15-20 i won't get any shares. Sometimes i'll get the message "Stratum from pool 0 detectet now block". No stales, no error!
http://s7.directupload.net/images/140119/scfcrd7g.jpg (http://www.directupload.net)



If i run the card with 14 or less intensity ill get shares as normal but obviously less khash/s.
http://s1.directupload.net/images/140119/ml7vat3f.jpg (http://www.directupload.net)


These are my CG miner settings.

My start.bat:

I don't know what the problem could be. I would really like to run the card with 100% capacity. Could it be the Hardware?
Please help me. I'll give you 0.8 LTC if you can solve my problem, i know that is not much but that is all i have in LTC right now  :P

did you add the following to your run_cgminer.bat?


You didn't mention the amount of system RAM.

Sorry i missed that. I edited my post now.
I have 2 GB of Ram and i already have these two lines in my *.bat. Did not seem to help when i tried it :(

Increase your thread concurrency to something like 21000.
I see lots of hardware errors in the first screenshot. That`s the reason you get no shares.

upgrade your ram to 4gb (otherwise cgminer will crash when using higher concurrency).. use intensity 13 and concurrency 21712 ... .. if that works try 2 gpu threads ...

Did you play with overclocking / undervolting? If so screw it back a bit until stable at I 18 and then proceed stepwise.

Edit: My sapphire 7970 had its first stable mining when i undervolted a bit.. maybe this helps you here, too

Upgrade system ram to 4GB, try a lower intensity 18 and increase it and see if that helps. Also --gpu-memclock 1500 and --gpu-engine 880 or (something in the 820-880 range), and increase to TC 20480 or more.

add powertune 20

Where do you see errors?



Thanks for the advice i'll try it all and see if and what helped!
I set the TC low by purpose because i got errors.

One more question: Will 4 GB be enough for the whole rig?

hey buddy

R = rejected shares, (so no good)
HW = hardware errors (so no good)

you should be fine with 4gb, im thinking 2gb should be okay too but i dont know.

open the readme file (scrypt) in your cgminer folder.  follow step by step instructions (its on a 7950 i think, but you adjust for the card you have).  you may need to set memclock, etc (by trial and error).  also, dude, put --auto-fan or something like that, 85c is a bit too high for me, i like 75-80c its a bit cooler.

After you do all that, you can change your intensity to a higher level to get more kh/s.



 LSMgWTa2Vrez5kQNnVL8GKUf5hMnusvaAV

Low thread concurrency with higher intensities causes alot of hw errors on the 290s.

Try these settings without a .conf (rename cgminer.conf) to accept the rest as defaults:

./cgminer <the usual pool & u/p settings> -s1 --scrypt  --thread-concurrency 32765 -I 20 --gpu-powertune 20 --no-submit-stale

Adjust --gpu-memclock --gpu-engine & --gpu-fan as needed to tweak your khash to desired noise/heat level


LTC bounty not necessary, happy to help.  Ignore scammer feedback left for me, guy's a douche - claims I scammed him out of 7 cents worth of some shitcoin.

delete conf and try this
setx GPU_MAX_ALLOC_PERCENT 100
setx GPU_USE_SYNC_OBJECTS 1
cgminer.exe --scrypt -o stratum+tcp://coinotron.com:3334 -u Valansch.1 -p 1 -o stratum+tcp://coinotron.com:3334 -u Valansch.1 -p 2 --thread-concurrency 27000 --shaders 2560 --gpu-powertune 20 -I 18 -g 1 -w 512 --lookup-gap 2 --gpu-engine 1000 --gpu-memclock 1400

i found that --autofan is pretty crappy. It will kick in when it is already too hot then slow down when it's cold again and so on.
I'm using MSI afterburner. Is way better for that, didn't have it running at this time just to take the screenshot.

That option will wear out your fan quicker than setting the fan speed to a  constant defined one in AB or Trixx.

if the issue is not intensity, cut out all your variables & put them back in one by one.

all you need to get it started is:
cgminer --scrypt -o http://coinotron.com:3334 -u username -p password -I 13

then check your hash rate & make sure the HW (hardware error) figure is at 0. (its to the right of the hash rate)

Looking at your config though, try changing -w 256 to -w 512

Also, try running cgminer without msi afterburner running, you may have accidentally changed the settings to underclock it or something.

edit: i might have the same card as you. If changing the -w number as above doesn't work let me know & I'll give you some good settings

It works Fine.
The problem was the Ram.
I still don't know why it didn't work on low TC but on high TC and more RAM it works now.
Thank you all for the help!

just187 will get the coins since he is the first who mentions the RAM.

Just curious, but how much ram did you need?

I'm try to get a rig of 5 cards up and running. I initially bought 4 GB and have more on the way. Wondering if 8/16/32 is required for 5 cards. Right now I have 2 up and running with low intensity just to have something hashing. Hoping 8GB for 5 cards will be enough, but anyone's input would be appreciated.

Edit: Running ASUS R9 290 cards if it matters.
M5A99FX PRO R2.0 AM3+
GSkill Ripjaw 4GB ram
sempron 145

I am running 4x R9 290s and I had to upgrade from 4GB to 16GB to get it to run at all.

The thread concurrency for the 290s  and 290x is usually over 30000 so you need a lot of RAM for the initial startup. Once it starts, RAM doesn't matter any more.

A way to test this is to set your thread concurrency really low to see if it starts properly. Maybe something around 8192 to start. If everything starts up that way but not when you set it to the default concurrency(30592 for mine), you need more RAM.

EDIT: You should also find out what your default thread concurrency is for your cards, it can vary from card to card. The way to check this is to delete all your .bin files from your cgminer folder and start up cgminer with no thread concurrency number set(just delete the field from your config file or set to 0). Once cgminer starts running, stop the process and look at the newly created .bin file. It will have a number in it's name that gives you the default max thread concurrency for your card. If you set it higher than that, prepare to get hardware errors and rejected shares.

Thanks. I picked up 8GB over lunch and will add it this evening to see just how much I need. I'm hoping 8GB is enough, but will scale to 12 then 16 until I get it working. I heard somewhere that I cannot find now, 2GB/card usually works. Looks like I just have an evening full of playing with a rig ahead of me.

I would say that you probably would want to have your RAM resources equal to at least half of your GPU resources for startup. If you want to be really safe, I would have it as 1 to 1.

I think the 290s are 4GB cards so you'd want 20GB total to run everything with lots of leg room. You could try a 2x8 and 2x4 for a total of 24GB.

My rig right now is at the 1gig RAM:1Gig GPU speed and since upgrading I have had no problems running the max concurrency.

I'm not so sure it's the RAM.

I run 3 R9 290's on BAMT which is a 32 bit operating system, so even though I have 12GB of RAM in the system because it's a left-over board from an older computer of mine, only 2GB shows up as usable in the OS.  I have no trouble at all with hashrates.  I use the settings I suggested above...


http://i43.tinypic.com/2mdmdtw.png

The RAM was the solution to(one of) my problems. But I am running in a Windows environment, not Linux.

I'm having tons of trouble with these nonce HW errors (on win 7).  I'm putting a post together about them to seek help.  I've got 32GB stuffed in a box, reduced from 5 cards to 1 card, and still getting loads of errors.

My question for you - based on your high outputs on your cards, is what is your setup here?
Could you provide specifics on what Motherboard, cpu, PSU, ram brand you're using?  Also, what version of the radeon drivers, and are you using the amd app sdk or not?  I know after 13.6/4 it was included in the driver package, or at least that's what I've read.  Also, what cgminer version do you use?  What bamt version?  Are you using powered risers?  I guess your mobo can't be too old if it has at least 3 pcie's.

Hi,

its your main problem solved ?

My Ideas,

280 and 290 cards in one system have one big problem - the gpu threads ( variable -g 1 or -g 2 )

- for the 290er card you need to set it to -g 1 and for the 280er card need to set it to -g 2

I have 3 rigs a two card, two with 2 x 290 and one in mixed mode ( 1 x 290 + 1 x 280 ), all cards Sapphire branded AMD Cards.
To solve the problem with the gpu threads i use Multiminer and set for each card a coin configuration. In Multiminer you can set for each coin different configs and gpu threads, thats with cgminer not possible!

Here are my 280er settings:

-I 13 -g 2 -w 256 --thread-concurrency 8192 --gpu-engine 1070 --gpu-memclock 1500 --gpu-fan 85 --shaders 256

725 kH/s at 24/7


and here are my 290er settings:

-g 1 -w 256 --lookup-gap 2 --thread-concurrency 28646 -I 20 --gpu-fan 85 --gpu-engine 1000 --gpu-memclock 1500 --gpu-powertune 20

875 kH/s at 24/7


I hope you can use my infos.

Multiminer you can find here:

https://github.com/nwoolls/MultiMiner (https://github.com/nwoolls/MultiMiner)

https://bitcointalk.org/index.php?topic=248173.0 (https://bitcointalk.org/index.php?topic=248173.0)

Regards
Matthias