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Title: dual 5850 causing nearly 100% cpu use?!?!? Post by: CyberPhunk on July 06, 2011, 08:55:39 PM I couldn't find any specific solution for this issue, I'm using GUIMiner, and running two 5850 cards, and I'm getting nearly 100% cpu core usage on core 1, if I uncheck cpu affinity on both, then I get nearly 50% usage across all four cpu cores!
Help! Title: Re: dual 5850 causing nearly 100% cpu use?!?!? Post by: malevolent on July 06, 2011, 09:20:35 PM Got the same problem, got with 2 5850s and a 6850
with 1 5850 and 1 6850 I didnt have this problem on phoenix, only on poclbm after adding 2nd 5850 1st core has got 100% load. :/ Title: Re: dual 5850 causing nearly 100% cpu use?!?!? Post by: xurious on July 07, 2011, 12:46:52 AM I'm too lazy to dig up the thread, but this is apparently a driver bug. Just keep the affinity to 1 core. There is a work around here somewhere for it....
Title: Re: dual 5850 causing nearly 100% cpu use?!?!? Post by: cryptomint on July 07, 2011, 01:43:31 AM I'm too lazy to dig up the thread, but this is apparently a driver bug. Just keep the affinity to 1 core. There is a work around here somewhere for it.... This. I tried very hard to fix this problem on my one windows rig. I ended up unlocking the second core of my Sempron processor so the rig would be usable as a desktop. If you have multiple cores/processors: 1. start the miners 2. go to the task manager (ctrl+shift+esc) 3. in the processes tab right click each miner process and click "Set Affinity..." 4. put all of the miner processes on the same cpu Title: Re: dual 5850 causing nearly 100% cpu use?!?!? Post by: Auspician on July 07, 2011, 01:49:47 AM This problem is generally driver based. Try a different version of Catalyst (avoid 11.2 and 11.3) or a different version of Stream SKD and it is likely to solve the problem. You do want some CPU usage though (25% or so) to stabilize your computer in case your GFX cards try to do more than 100% occasionally. This is fairly frequent; fortunately the software most commonly used takes this potential problem into account and runs the CPU at a reasonable rate to keep everything in line.
I'm using Catalyst 11.1 and Stream SKD 2.1 and I'm using 20% CPU on my Intel i7. Title: Re: dual 5850 causing nearly 100% cpu use?!?!? Post by: haydent on July 29, 2011, 02:51:26 AM i have started a thread at amd dev forum - opencl section about the 100% cpu usage bug with >1 gpu installed. feel free to jump over there and post your support for this issue being addressed...
http://forums.amd.com/devforum/messageview.cfm?catid=390&threadid=153211&enterthread=y |