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MicahVillmow
Staff
Staff

Bug- 100% CPU usage when >1 GPU installed & used

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gat3way
Journeyman III

Bug- 100% CPU usage when >1 GPU installed & used

Thanks again, I will collect what's needed and submit that tomorrow (it's 1:30 already here, need some sleep)

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anglik666
Adept I

Re: Bug- 100% CPU usage when >1 GPU installed & used

Any news with this bug, I have two 7870 cards and when using OpenCL for GPU my 2 CPU are 100% busy.

Any solutions ?

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himanshu_gautam
Grandmaster

Re: Bug- 100% CPU usage when >1 GPU installed & used

Nice work finding such a old thread. Let me try asking some people on the current status.

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anglik666
Adept I

Re: Bug- 100% CPU usage when >1 GPU installed & used

I tried few combinations:

Drivers 12.8, 13.1, 13.4, 13.6 and bitcoin miner (from GUI mining - updated Dec 3 with 7970 bugfix, also supports Stratum!) 20121203 / 20120219

All drivers above 12.8 give me 100% CPU usage after some time (never longer then 5min), also with 20121203 client after next few min/sec performance went down from Mhash to khash so decrease 1000 times....

Only combination of 12.8 and 20120209 gives me comfortable set to maining. Important is that 12.8 always gives max speed and when U run the some game doesn't slow down a game performance. All later drivers prefer

OpenCL engine rather then DirectX/OpenGL so simple U cannot play the game, U have to stop the 'miner'.

When I was checking that, I always uninstall old drivers by AMD uninstalling tool, after restart I used Driver Fusion, and manually deleted opencl.dll and amdocl.dll from Windows folders then after next restart I installed new drivers.

System: Win 7 Ultimate  64bit

CPU: AMD FX 8150

MOBO: ASUS M5A97 fresh BIOS

RAM: 8GB

HDD: 3x512GB RAID 5

GFX: 2x 7870 1.1GHz and 1.0GHz (manufacturer overclocking)

Greetz

M.

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himanshu_gautam
Grandmaster

Re: Bug- 100% CPU usage when >1 GPU installed & used

Dowloaded your software on a multi-gpu setup, have a few questions though:

1. Is the source of bitcoin available? I did saw some kernel files, so i guess atleast kernels are available.

2. Is the 100% CPU usage issue happen with any kernel that run on a multi-gpu setup, or some specific kernel?

3. I tried to run the software on a multigpu set-up, but in the "device" textbox, i could select only one device(out of 1 CPU and 2 GPUs). How to run it for multi-gpu.

4.  Also the software seems to rely on some external server, and it was not running for me (IMHO), with the default server. Getting Error: Object in JSON format could not read (or something similar). Any ideas?

4. I am planning to modify SimpleMultiDevice sample to reproduce the issue. Any comments? Maybe you wanna do that

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anglik666
Adept I

Re: Bug- 100% CPU usage when >1 GPU installed & used

Hello himanshu.gautam,

himanshu_gautam
Grandmaster

Re: Bug- 100% CPU usage when >1 GPU installed & used

anglik666,

Seems to be some issue with your post. I only see "Hello Himanshu Gautam".anglik666

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anglik666
Adept I

Re: Bug- 100% CPU usage when >1 GPU installed & used

Hello himanshu.gautam,

Thursday, June 6, 2013, 7:53:16 AM, you wrote:

> 1. Is the source of bitcoin available? I did saw some kernel files,

> so i guess atleast kernels are available.

GUIMiner  is  only  a  frond  end (GUI) for other miners, I use poclbm

which is writen in pyton, source there:

https://github.com/theRealTacoTime/poclbm

Also after installation OpenCL parts are in plain text in program DIR.

> 2. Is the 100% CPU usage issue happen with any kernel that run on a

> multi-gpu setup, or some specific kernel?

I use only poclbm, but in few posts lads had this problem as well.

> 3. I tried to run the software on a multigpu set-up, but in the

> "device" textbox, i could select only one device(out of 1 CPU and 2

> GPUs). How to run it for multi-gpu.

Go to File=>New Miner=>OpenCL, You will have a new tab for new 'Miner'.

> 4.  Also the software seems to rely on some external server, and it

> was not running for me (IMHO), with the default server. Getting

> Error: Object in JSON format could not read (or something similar). Any ideas?

U have to register, btcguild.com is OK.

If U don't want use my:

anglik666_4 and anglik666_5

pass is any (must be some but is whichever).

Server: Any BTCGuild from the list.

> 4. I am planning to modify SimpleMultiDevice sample to reproduce

> the issue. Any comments? Maybe you wanna do that

Sounds  to  me like a Mars expedition, maybe better I'll go for a pint

and U do that ?

>  

>        

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Best regards,

Marek                            mailto:anglik666@gmail.com

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himanshu_gautam
Grandmaster

Re: Bug- 100% CPU usage when >1 GPU installed & used

This is cool. I did not know you could just reply to the e-mail to post here....

but yeah -- It looks like it gives away your e-mail address though...

-

Bruhaspati

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