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Title: Want GPU's running 100% Post by: mautobu on June 11, 2011, 06:02:31 AM So, I'm having a little issue here. Setup:
Phenom II 965 8 GB Ram 2x 5870 @ 1040/300 pulling 435 at load Temps at 55-60 C for the cards Catalyst 11.4 SDK 2.1 poclbm The issue is that my cards are not being consistently pegged. One will run at 100%, while the other hovers between 60 and 95%. I've got the machine set to sleep the display immediately, but still I see a significant drop in MHash/s. Any ideas? Do i just need dummy plugs and a crap dedi card? Title: Re: Want GPU's running 100% Post by: mautobu on June 11, 2011, 06:22:46 PM Shameless self bump...
Title: Re: Want GPU's running 100% Post by: LegitBit on June 11, 2011, 11:07:43 PM Hmm, what settings do you use?
Also what program are you measuring utilization with? I prefer HWINFO since it gives more accurate Temp readings than many of the overclocking tools out there. It could be that the second GPU is entering a power save state, you may want to disable ULPS which can be done via Sapphire Trixx. Need more info. Title: Re: Want GPU's running 100% Post by: mautobu on June 11, 2011, 11:44:05 PM Using MSI Afterburner to measure, but also just looking at my MHash. One will float around 435, while GPU 2 sits around 360-430, fluctuates with the load.
Title: Re: Want GPU's running 100% Post by: mautobu on June 12, 2011, 12:16:36 AM did this: http://www.overclock.net/amd-ati/667144-crossfire-disabling-ulps.html
no luck :( Title: Re: Want GPU's running 100% Post by: BinaryMage on June 12, 2011, 12:18:24 AM did this: http://www.overclock.net/amd-ati/667144-crossfire-disabling-ulps.html no luck :( What Aggression level are you running at? Title: Re: Want GPU's running 100% Post by: genewitch on June 12, 2011, 04:20:58 AM don't use crossfire. SLI is for video not GPGPU. i may be wrong but setting up separate threads for each GPU may be your best bet.
Title: Re: Want GPU's running 100% Post by: mautobu on June 12, 2011, 07:38:55 AM Already have separate threads, but thanks for the help :D
Title: Re: Want GPU's running 100% Post by: mautobu on June 12, 2011, 07:43:12 AM did this: http://www.overclock.net/amd-ati/667144-crossfire-disabling-ulps.html no luck :( What Aggression level are you running at? Uhhh..... Whatever the default is. I haven't looked into changing it at all. What's the setting for my batch then? --AGGRESSION=x? Title: Re: Want GPU's running 100% Post by: mautobu on June 12, 2011, 07:32:05 PM figured it out... workload at 128, set it to 256.
Title: Re: Want GPU's running 100% Post by: Saturn7 on June 16, 2011, 06:32:12 PM Also use the Phatk kernel instead of poclbm if you are using SDK 2.4
I am getting 423M/h with my 5870 at 970 MHz, If you have clocked yours to 1045 you should be getting 450M/h What voltages are you using for that speed. I killed one of my cards when i pushed it to 1000Mhz? Title: Re: Want GPU's running 100% Post by: mautobu on June 25, 2011, 08:13:21 PM Well, it turns out that my workload and -f were to blame.
new batch: poclbm0.exe -v -w256 -f 10 Catalyst 11.4 SDK 2.1 m0mchil's POCLBM Slush's pool 2 threads, 1040/300 @ 1.2V. Card 1 runs at 99%, card 2 at 97% consistently. I get 458 on thread 1 and 445ish on thread 2. Thanks for the input gents. Title: Re: Want GPU's running 100% Post by: hunter on June 29, 2011, 03:46:55 AM Which driver version has the sdk 2.1?
And is that the best version to use? I just can't seem to get > 420 on my cards, running 1GHZ on windows 7 64b using poclbm. Title: Re: Want GPU's running 100% Post by: mautobu on June 29, 2011, 06:23:41 AM Quote Which driver version has the sdk 2.1? And is that the best version to use? This: Quote Catalyst 11.4 SDK 2.1 found here (for windows 7 at any rate): Catalyst 11.4 (http://www2.ati.com/drivers/11-4_vista64_win7_64_dd_ccc_ocl.exe) SDK 2.1 (http://developer.amd.com/Downloads/ati-stream-sdk-v2.1-vista-win7-64.exe) Does not work for 6000 series cards. Title: Re: Want GPU's running 100% Post by: hunter on June 30, 2011, 01:58:23 AM Quote Which driver version has the sdk 2.1? And is that the best version to use? This: Quote Catalyst 11.4 SDK 2.1 found here (for windows 7 at any rate): Catalyst 11.4 (http://www2.ati.com/drivers/11-4_vista64_win7_64_dd_ccc_ocl.exe) SDK 2.1 (http://developer.amd.com/Downloads/ati-stream-sdk-v2.1-vista-win7-64.exe) Does not work for 6000 series cards. Thank you, I gained ~170 mhash/s total on my cards. |