Hello,

from time to time I got very long and, if not cancelled before, longer than 100 % running WU on my 7950 GPU. On example is:

http://milkyway.cs.rpi.edu/milkyway/result.php?resultid=178798443 (aborted by me today in the morning (Austian time)) Please look in the stderr.out :)

It seemed that the WU ran on the CPU instead of the GPU.

I´m using the 1.02 OpenCL-client with anonymous platform for running 2 tasks parallel. Driver is the release driver of 7950: 8.921.2-120119a-132101E-ATI
Boinc 7.0.25
Win 7
Two 7950 not crossfired for BOINC.

Do you have any suggestions?

Thanks

Nowi

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You should update your catalyst driver to 12.3.
There is a known bug in cat < 12.3 related to Tahiti gpus, which could cause the behavior you described.

Thank you! I will give the driver a try.

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I have tried 12.3 and 12.4 but it was no solution of the problem.

I posted this in the AMD and OpenCL-dev forum:

Hello,

I have problems with every newer driver than the release driver (8.921.2-120119a-132101E-ATI). I encounter the following problems with the OpenCL-Application:

Some tasks are not ending or send to CPU instead.
Often I encounter the message: "amdkmdap not responding and was restartet" (translated from german)
The screen is gone black and cannot be restored except of doing a reset.

System Information:

C2Q 9550 @ 3.4 GHz, Asus P5Q-E, 8GB, Win7 64 Bit, Boinc-Version 7.0.25

2 Gigabyte 7950 WF3 (not crossfired when using BOINC, second card has a dummy plug instead of a display)

Hope that I will get an answer.

Do you have answers here, too.

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