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Title: 3 x HD 5970 + Ubuntu 11.04 Post by: pollus on September 01, 2011, 08:01:08 PM Hi there,
I just got this new equipment today I installed everything and it seems to be working fine but... here is a thing: When I start poclbm.py on once core (d0 ) i get about 360+ mhash/s if I start poclbm on any of the other 4 the other cores (why 4 - explanation below) is hitting max 15 mhash/s and d0 is decreasing to ~300. Any ideas what is causing this behavior? I am running SDK 2.3 and ATI drivers 11.4 Not second problem as upper mentioned 3 x 5970 ubuntu only sees 5 cores not 6 if I do list adapters i get this: pollus@RIG-5970:~/Kiv-poclbm-89f9bd4$ aticonfig --list-adapters * 0. 13:00.0 ATI Radeon HD 5900 Series 1. 12:00.0 ATI Radeon HD 5900 Series 2. 0b:00.0 ATI Radeon HD 5900 Series 3. 0a:00.0 ATI Radeon HD 5900 Series 4. 07:00.0 ATI Radeon HD 5900 Series 5. 06:00.0 ATI Radeon HD 5900 Series but if I test it for opencl i get this: pollus@RIG-5970:/opt/ati-stream-sdk-v2.3-lnx64/samples/opencl/bin/x86_64$ ./CLInfo |grep CL_DEVICE_TYPE_GPU Device Type: CL_DEVICE_TYPE_GPU Device Type: CL_DEVICE_TYPE_GPU Device Type: CL_DEVICE_TYPE_GPU Device Type: CL_DEVICE_TYPE_GPU Device Type: CL_DEVICE_TYPE_GPU Only 5 devices. Any idea what might be wrong ? Is it a software or a hardware fault? To clarify: it is not an issue with processor ( I have 6 core AMD processor to support this rig) so it has to be something else. Any help is appreciated. Thank you ! Cheers pollus Small update, I have eliminated the second issue it looks like the graphic card itself might be a culprit here. After I replaced it with a different one I can see all 6 cores. I still have the other issue though. Title: Re: 3 x HD 5970 + Ubuntu 11.04 Post by: TeaL on September 02, 2011, 02:22:35 AM You should use version 11.6 of the catalyst driver, it's faster and supports overclocking. You should also use either AMD APP SDK v 2.4 or 2.5. As for the issue it self, I believe it's related to having crossfire enabled. You can check to see if crossfire is enabled with the command:
Code: aticonfig --lscs You can disable it with: Code: aticonifg --adapter=all --cf=off You'll have to restart your X server for the changes to take effect tho. Title: Re: 3 x HD 5970 + Ubuntu 11.04 Post by: pollus on September 02, 2011, 11:51:16 PM Bullseye !
Thanks for the hint. I got everything up and running now. The culprit as you said was the crossfire option enabled. thanks for that ! Have a godo weekend. Title: Re: 3 x HD 5970 + Ubuntu 11.04 Post by: TeaL on September 03, 2011, 06:37:49 AM Just glad I could help.
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