OFFICIAL CGMINER mining software thread for linux/win/osx/mips/arm/r-pi 4.11.1

[uniman]

Hello Folks,

I'm running cgminer 3.0.1 on Ubuntu 12.04 with AMD APP SDK 2.4.  I'm using whatever proprietary driver installs by default with either a 5450 or 6850 video card.

I have in the recent past been able to successfully use the 5450 and the above software with Slush's pool.  Although rather unimpressive at a doddering 10MHash/S, this setup does indeed work.  However, when i try this with the 6850 I have problems.

The basic problem is that although cgminer says the 6850 is humping along at about 190 MHash/S, neither Slush's pool or 50btc report any shares returned.  If I turn on debug mode while cgminer is executing, every few minutes I will see the following sequence of messages: "GPU 0 found something?" then "OCL NONCE nnnnnnnnnnnnn found in slot 0" then "GPU0 invalid nonce" and finally "Discarded cloned or rolled work."  I've been attempting to study the source code myself and have found where these messages are coming from, but do not presently understand the code well enough to solve my problem.

Although I saw the "invalid nonce" message long ago, I was hoping that given the bazillions of hashes that are being calculated, surely a handful of hardware errors would be of no concern.  However, I've since amended my guess such that this error sequence occurs when I should have a share ready to report, but something about it flunks a test, due to a hardware error.  Hence the entire share is no good and thus nothing is ever reported back to the pools I'm using.

Any insight about this would be greatly appreciated.

[EskimoBob]

has something changed?

cgminer 3.0.1
fresh from github, compiles fine and

Code:

scrypt...............: Enabled

if I run

Code:

$ ./cgminer --scrypt -o....etc 

I get :

Code:

cgminer: --scrypt: unrecognized option 

 

[stevegee58]

Don't you have to build it to include scrypt?

[EskimoBob]

Don't you have to build it to include scrypt?

I  did and this is what "scrypt...............: Enabled"  means

[stevegee58]

That's what I get for not reading.

[Schleicher]

When stopping cgminer there are some garbage characters at the end:

Code:

 [2013-04-25 23:06:14] New blocks detected on network: 1

 [2013-04-25 23:06:14] Summary of per device statistics:

 [2013-04-25 23:06:14] GPU0                | (5s):0.000 (avg):74.41Mh/s | A:1 R:
m I: 6
 [2013-04S-h2u5t d2o3w:n0 6s:i1g4n]a lS trreacteuimv ecdo.n
ne

I suspect that this only happens with stratum pools.
Other than that cgminer is working fine. No problems.

[ProfNova]

Just updated to version 3.0.1 my 7970 runs fine but my 5770 just gives error.
invalid nonce - HW error.

I'm using ccc version 13.4 on windows 7 64bit.

[Marrs]

One of the limiting factors for Litecoin mining speed is the amount of memory that can be allocated by the OpenCL process. Currently, there is a limitation that OpenCL processes can allocate a maximum of 2GB. That limitation is slated to be removed in the next release of the APP SDK: http://devgurus.amd.com/thread/166292

That means, at least in theory, that anyone with a GPU that has more than 2GB per core should be able to raise their combination of thead-concurrency and gpu-threads to fill up even more GPU memory, possibly resulting in higher hash rates.

Does cgminer impose any limits on the amount of OpenCL memory it tries to allocate, or does it just pass the parameters to the SDK?

[-ck]

Does cgminer impose any limits on the amount of OpenCL memory it tries to allocate

no

[kano]

When stopping cgminer there are some garbage characters at the end:

Code:

 [2013-04-25 23:06:14] New blocks detected on network: 1

 [2013-04-25 23:06:14] Summary of per device statistics:

 [2013-04-25 23:06:14] GPU0                | (5s):0.000 (avg):74.41Mh/s | A:1 R:
m I: 6
 [2013-04S-h2u5t d2o3w:n0 6s:i1g4n]a lS trreacteuimv ecdo.n
ne

I suspect that this only happens with stratum pools.
Other than that cgminer is working fine. No problems.

curses ...

It says:
 [2013-04-25 23:06:14] Stratum conne (plus whatever you chopped off)
Shut down signal received.

[kujina]

Hi!

Any chance cgminer will support voltage control of "Boost Edition" 79xx cards in the near future? I have a msi 7950 Twin Frozr III (3GD5/OC BE) card that is voltage unlocked but only the latest v3.0.0 Beta 9 of MSI Afterburner will actually change the voltage (and Sapphire Trixx too). For example Afterburner 2.3.1 lets you adjust the voltage but it doesn't actually change it. I've tried to change the voltage in cgminer 3.0.1 but it doesn't actually change it (did try drivers 12.8, 13.1, & 13.4).

[kano]

BFL SC Jalapeno arrived a short while ago

http://www.kano-kun.net/

[-ck]

BFL SC Jalapeno arrived a short while ago

http://www.kano-kun.net/

Get to work on the driver then you lazy sod.

* ckolivas tosses kano some peanuts

[MineForeman.com]

BFL SC Jalapeno arrived a short while ago

http://www.kano-kun.net/

When are you putting the code into git so I can get a hold of it, Josh said there should be one in the mail for me as well, I will be your verify if you want .

[-ck]

BFL SC Jalapeno arrived a short while ago

http://www.kano-kun.net/

When are you putting the code into git so I can get a hold of it, Josh said there should be one in the mail for me as well, I will be your verify if you want .

Hackathon is underway. As soon as the code is in git master and working, I will inform the forum.

EDIT: I've received one too now.

[MineForeman.com]

EDIT: I've received one too now

I am jealous!  Who is it shipped through?

[-ck]

EDIT: I've received one too now

I am jealous!  Who is it shipped through?

Fedex

[crazyates]

BFL SC Jalapeno arrived a short while ago

EDIT: I've received one too now.

[bobbobobbo]

Can anyone help me with a noob question? I know my setup is common so maybe someone can chime in with their ideal parameters..

I have 3x Sapphire 7950s 100352-4l, attempting to mine litecoin.

I have powertune set to +20. I'm looking for the OC clock speeds as well as the full CGminer input.

I've been entering and testing a ton. I can't seem to get it dialed in right..

edit:: I found this thread very helpful. will test tomorrow.
https://forum.litecoin.net/index.php/topic,620.15.html
https://github.com/litecoin-project/litecoin/wiki/Mining-hardware-comparison

[ProfNova]

Just updated to version 3.0.1 my 7970 runs fine but my 5770 just gives error.
invalid nonce - HW error.

I'm using ccc version 13.4 on windows 7 64bit.

Anyone have any idea how to fix this issue?