You could try my kernel with SDK 2.6! On my 6950 I get a 30 MH/s increase in Phoenix 1.7 over current CGMINER 2.0.8. I guess some of Phateus optimisations don't work anymore, because AMD updated the OpenCL compiler to generate better performing code.
Dia
Topic: *Catalyst 12.1 Preview* Decreased performance, anyone else confirm? - page 3. (Read 20763 times)
December 21, 2011, 09:55:17 AM
December 20, 2011, 04:49:52 AM
im running 12.1p with 2.4 sdk and i get 0-6% cpu usage now and it stays closer to 0 most of the time pretty sweet i did lose some perf but not much to even worry about maybe 5mh.
December 19, 2011, 02:42:05 PM
I'm now running 11.12 with SDK 2.4 and I'm experiencing lowered CPU use (only 60% now while mining) while retaining full performance from 11.11. I'm going to try going back to SDK 2.1 tonight when I get home and see if that will get me back to <5% CPU usage.
December 18, 2011, 01:06:58 AM
I used both CGminer and GUIMiner and I got the same drop with each. I think it's card dependent.
It would be prudent to post which series and how much of a perfomance drop you experience, on 5770, it was good for -15%. Perhaps 6xxx is more optimized (or less unoptimized) in this OpenCL.
Please see my first post on this thread, I posted that already.
Since my first test I've also installed 12.1 on another machine with 3x 6870's (everything else is basically the same). I got a similar performance drop.
It's interesting that the performance is coincidentally very close to what each card would do at stock clocks. I was suspicious that maybe something with the new driver was interfering with the over/underclocking. But GPU-z reports that the cards are being clocked correctly after I dance my many-step OC/UC dance.
December 17, 2011, 09:48:44 PM
I used both CGminer and GUIMiner and I got the same drop with each. I think it's card dependent.
It would be prudent to post which series and how much of a perfomance drop you experience, on 5770, it was good for -15%. Perhaps 6xxx is more optimized (or less unoptimized) in this OpenCL.
December 17, 2011, 09:07:56 PM
Updated to 11.12 except for the app sdk. GPU usage is higher than before. I had to decrease intensity to keep the cards at the same temperatures they were running before the update. Speed is the same as before, CPU bug is gone.
December 17, 2011, 08:47:25 PM
My mhash dropped on all my boxes with 11.12/12.1. Also high aggression/intensity cpu bug still there.
December 17, 2011, 10:01:09 AM
11.12 100% CPU is gone. Performance up a few (6-8) Mhash/s per card. Fantastic. Using cgminer.
Edit: Having similar experience with multiple machines with various CPUs. This is great all around. More Mhash/s less and less energy spent. 5870s and 5850s here.
Edit: Having similar experience with multiple machines with various CPUs. This is great all around. More Mhash/s less and less energy spent. 5870s and 5850s here.
Has anyone written a gui for CG miner? because using GUIminer(poclbm kernal) my hash rate drops by an annoying amount
I used both CGminer and GUIMiner and I got the same drop with each. I think it's card dependent.
December 17, 2011, 03:46:41 AM
11.12 100% CPU is gone. Performance up a few (6-8) Mhash/s per card. Fantastic. Using cgminer.
Edit: Having similar experience with multiple machines with various CPUs. This is great all around. More Mhash/s less and less energy spent. 5870s and 5850s here.
Edit: Having similar experience with multiple machines with various CPUs. This is great all around. More Mhash/s less and less energy spent. 5870s and 5850s here.
Has anyone written a gui for CG miner? because using GUIminer(poclbm kernal) my hash rate drops by an annoying amount
December 17, 2011, 01:15:38 AM
I'm using 2 cards- a 5870 and a 5770- i use -f80 when I'm using my rig but otherwise i just use the standard -v -w64 settings when i'm away or sleeping.... i'm just glad that cpu bug is gone- it was like i only had a tri core while mining the last half a year 
December 16, 2011, 11:44:03 PM
Yup, CPU bug is finally gone, i'll take the small drop in hashing power for that 
I play BF3 and I haven't noticed any drop in performance in that game. However the previous driver version gave me horrible dissapearing of objects/terrain in skyrim that was fixable by minimizing the game then maximizing it- got very very annoying.... that has since been fixed with my update yesterday
I should mention that I am using the 11.12 drivers that were recently released
How many cards? Also are you using really high intensity/aggression, or somewhere in the middle/low end? I play BF3 and I haven't noticed any drop in performance in that game. However the previous driver version gave me horrible dissapearing of objects/terrain in skyrim that was fixable by minimizing the game then maximizing it- got very very annoying.... that has since been fixed with my update yesterdayI should mention that I am using the 11.12 drivers that were recently released
Two here, CPU bug Removed? YES 100% removed for me, YAAAAAY NO MORE 100% ON ONE OF MY CORES!
Running dual 6870's, Lost 10mhash/s on each card. Sad...... But worth it.
BF3 runs the same
HAAAAKUUUUNAAA MUUUUTAAAATAAAAAA!!!!!
IT MEANS NOOOO WORRRIIIIIIIESSSSSSS FOOOOORRRRRRRRRR THE RESSSSSSSST OFFF YOURRRR DAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAYYYYZZZZZ
Ah crap, Now i have a worry,
Using these drivers while mining at -f120, Using the internet for video/etc was all smooth and dandy, Now it's kinda....
Stuttery........
Help?
December 16, 2011, 11:33:02 PM
Yup, CPU bug is finally gone, i'll take the small drop in hashing power for that I play BF3 and I haven't noticed any drop in performance in that game. However the previous driver version gave me horrible dissapearing of objects/terrain in skyrim that was fixable by minimizing the game then maximizing it- got very very annoying.... that has since been fixed with my update yesterday
I should mention that I am using the 11.12 drivers that were recently released
How many cards? Also are you using really high intensity/aggression, or somewhere in the middle/low end? I play BF3 and I haven't noticed any drop in performance in that game. However the previous driver version gave me horrible dissapearing of objects/terrain in skyrim that was fixable by minimizing the game then maximizing it- got very very annoying.... that has since been fixed with my update yesterdayI should mention that I am using the 11.12 drivers that were recently released
December 16, 2011, 10:49:07 PM
Yup, CPU bug is finally gone, i'll take the small drop in hashing power for that I play BF3 and I haven't noticed any drop in performance in that game. However the previous driver version gave me horrible dissapearing of objects/terrain in skyrim that was fixable by minimizing the game then maximizing it- got very very annoying.... that has since been fixed with my update yesterday
Thanks, Updating my sh!t now, I'll let everyone know. I play BF3 and I haven't noticed any drop in performance in that game. However the previous driver version gave me horrible dissapearing of objects/terrain in skyrim that was fixable by minimizing the game then maximizing it- got very very annoying.... that has since been fixed with my update yesterday December 16, 2011, 10:47:27 PM
Yup, CPU bug is finally gone, i'll take the small drop in hashing power for that I play BF3 and I haven't noticed any drop in performance in that game. However the previous driver version gave me horrible dissapearing of objects/terrain in skyrim that was fixable by minimizing the game then maximizing it- got very very annoying.... that has since been fixed with my update yesterday
I should mention that I am using the 11.12 drivers that were recently released
I play BF3 and I haven't noticed any drop in performance in that game. However the previous driver version gave me horrible dissapearing of objects/terrain in skyrim that was fixable by minimizing the game then maximizing it- got very very annoying.... that has since been fixed with my update yesterdayI should mention that I am using the 11.12 drivers that were recently released
December 16, 2011, 10:43:26 PM
i also have a slight drop in hashing power since the new drivers but the CPU bug is gone
The CPU bug is gone?!?!?!! Really?! Your not bullshitting?
So guys, take a look here, Apparently AMD notcied the Failure of 12.1...
They've now got some BIG RED TEXT at the top
However i still fear TOUCHING my BF3 drivers.... Last fucking thing i want is Stuttering
Info on the BIG RED TEXT? Was it there before? Is this a non-mentioned hotfix/quickswap?
December 16, 2011, 10:33:53 PM
i also have a slight drop in hashing power since the new drivers but the CPU bug is gone
December 16, 2011, 10:04:04 PM
oh my god I have tried like 4 times now to revert to 2.5 sdk and i cant revert! I've tried uninstalling -everything- amd related and used driver sweeper every time too, but i simply cant revert it! its like it just decides to keep the most recent sdk "just in case".
\Same here... and it didnt solve the cpu bug for me.
I already figured out how to revert back to the faster SDK. Just scroll down. I even posted a compressed archive of the files you'll need to revert back to 2.5 (2.6 is the new, slower, sdk)
There are extremely few, if any, modern games that utilize opencl. OpenCL is aimed more towards scientific applications like WPA cracking. If a game needs numbers calculated for something like physics, it'll either be offloaded to the CPU in order to keep game framerate high, or if you have an nvidia card and the game specificly uses physx, it'll be offloaded to that instead.
You're probably thinking of OpenGL, which coincidentally got a version bump to 4.2 in 11.12 and 12.1 preview.
Nah, Definitly know the differance between openComptuingLanguage and OpenGraphicsLanguage,
Why would you think that it would be offloaded to the CPU unless you have an nvidia card running PhysX?
In BF3, My cpu is up around 80% usage on each core ([email protected]) While my dual 6870's are just kinda "lulling" at 60% while they run the graphics for battlefield.
I would assume that OpenCL would take some of this CPU load off, And run it in my GPU.
December 16, 2011, 09:31:41 PM
oh my god I have tried like 4 times now to revert to 2.5 sdk and i cant revert! I've tried uninstalling -everything- amd related and used driver sweeper every time too, but i simply cant revert it! its like it just decides to keep the most recent sdk "just in case".
\Same here... and it didnt solve the cpu bug for me.
I already figured out how to revert back to the faster SDK. Just scroll down. I even posted a compressed archive of the files you'll need to revert back to 2.5 (2.6 is the new, slower, sdk)
There are extremely few, if any, modern games that utilize opencl. OpenCL is aimed more towards scientific applications like WPA cracking. If a game needs numbers calculated for something like physics, it'll either be offloaded to the CPU in order to keep game framerate high, or if you have an nvidia card and the game specificly uses physx, it'll be offloaded to that instead.
You're probably thinking of OpenGL, which coincidentally got a version bump to 4.2 in 11.12 and 12.1 preview.
December 16, 2011, 12:45:52 PM
oh my god I have tried like 4 times now to revert to 2.5 sdk and i cant revert! I've tried uninstalling -everything- amd related and used driver sweeper every time too, but i simply cant revert it! its like it just decides to keep the most recent sdk "just in case".
\Same here... and it didnt solve the cpu bug for me.
I already figured out how to revert back to the faster SDK. Just scroll down. I even posted a compressed archive of the files you'll need to revert back to 2.5 (2.6 is the new, slower, sdk)
December 16, 2011, 09:47:22 AM
oh my god I have tried like 4 times now to revert to 2.5 sdk and i cant revert! I've tried uninstalling -everything- amd related and used driver sweeper every time too, but i simply cant revert it! its like it just decides to keep the most recent sdk "just in case".
\Same here... and it didnt solve the cpu bug for me.
I already figured out how to revert back to the faster SDK. Just scroll down. I even posted a compressed archive of the files you'll need to revert back to 2.5 (2.6 is the new, slower, sdk)
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