On v8 , constant gpu usage interruptions on a HD 6950, know issue ?

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The_Matrix
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Message 1758097 - Posted: 22 Jan 2016, 7:13:01 UTC
Last modified: 22 Jan 2016, 7:13:12 UTC

Hello, above topic.

Noticed with gpu-z with core2duo and amd card HD 6950 under Windows 7 64-bit.

I used app_config.xml because , the gpu usage (with one wu) is constantly at 0% percent.

With three wus the usage is sometimes on 100 percent, but falls back to zero.

Dont know whats wrong with it.

Any guesses ?
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Profile Sutaru Tsureku
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Message 1758100 - Posted: 22 Jan 2016, 7:27:50 UTC - in response to Message 1758097.  
Last modified: 22 Jan 2016, 7:28:24 UTC

Which driver software you have installed?

Old Catalyst or new Crimson, which version?

In your PCs/results overview stay 1800.8, so I guess it's Catalyst v.x?

In your setiathome.berkeley.edu project folder should be a file like mb_cmdline_win_x86_SSE2_OpenCL_ATi.txt (currently I'm at my non AMD/ATI VGA card PC. ;-)

Open it with Notepad (german OS: Editor) and insert:
-hp
...save and exit.

This will give the GPU app more priority (high).

I would test it first just with 1 WU/GPU, then with 2 WUs/GPU and so on... - not to overload the Duo CPU.
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Message 1758106 - Posted: 22 Jan 2016, 7:46:13 UTC
Last modified: 22 Jan 2016, 8:42:49 UTC

THX !!!

That helped much.

And increase of 300-400 percent usage (at 100%)in timeline are back.

Catalyst 15.7.1

sorry, it was ONLY temporarly, back to the drops.

using lesser wus wont change it to the better.


-------------

OK, are there options in the driver versions ? Which one should I use ?

14.4 changes nothing on it.
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Message 1758128 - Posted: 22 Jan 2016, 9:08:55 UTC - in response to Message 1758106.  
Last modified: 22 Jan 2016, 9:10:32 UTC

Here is an interesting thread about: Radeon Software Crimson

Currently it looks like: Message 1754968
my guess is that 280/380/7990 are somewhat related and you can run multiple wu per gpu

my other guess is that 290/390/fiji are related and cannot run multiple wu per gpu on current drivers without errors

with 290x i was able to roll back driver to 14.4 and run multiple wu per gpu but it wasn't very fast. it seemed faster to just use a more recent driver and run just one wu per gpu

i tried running 390x with 14.4 but it doesn't work, either driver too old or card too new


On my FuryX's PC I have Crimson 16.1 installed, same driver 1912.5 in it like in Crimson 15.12, until now not tested if 2 WUs/GPU would be possilbe with the newest one.

I guess, you could install Crimson 16.1 and let run multiple WUs/GPU on your HD6950 (if it's identical to the 280/380/7990 series).


AFAIK it have to do which Graphics Core Next (GCN) version your GPU is/have.
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Message 1758132 - Posted: 22 Jan 2016, 9:29:55 UTC
Last modified: 22 Jan 2016, 9:48:35 UTC

ok, I will do that shortly.

guess what ? no GPU found, I go back to 15.7.1

and continue crunshing, an ignore this gpu-z thing.

Allright ?

Greetings, and thanks for helping.
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Message 1758136 - Posted: 22 Jan 2016, 10:00:01 UTC - in response to Message 1758132.  
Last modified: 22 Jan 2016, 10:34:06 UTC

Strange.

Here is written:
AMD Radeon™ HD 8470, Radeon™ HD 8350, Radeon™ HD 8000 (​D/G variants), Radeon™ HD 7000 Series (HD 7600 and below), Radeon™ HD 6000 Series, and Radeon™ HD 5000 Series Graphics products have been moved to a legacy support model and no additional driver releases are planned.


Catalyst 15.7.1
or
Crimson 16.1 Beta
This driver is provided "as is"​ and will not be supported with further updates, upgrades or bug fixes.

It looks like it's a specially driver for non GCN series.

You downloaded the software from there?


MSI Afterburner is a well tool for ATI/AMD VGA cards.
If you like, try it and look the GPU Load.
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Message 1758142 - Posted: 22 Jan 2016, 10:33:32 UTC - in response to Message 1758136.  

Additional...

I you would like to install a new driver,
you should uninstall the old one first and use DDU (Display Driver Uninstaller) for to delete old stuff which could hinder the new driver.
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Message boards : Number crunching : On v8 , constant gpu usage interruptions on a HD 6950, know issue ?


 
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