poclbm using CPU 100% even though using GPU?

[Grinder]

That doesn't help for the problem with 100% CPU on multi GPU setups.

[jalen]

I know this is an ATI focused thread, but I'm seeing the same behavior on my nVidia cards. 

Two seperate systems.

1 - quad core 2.66ghz core2, GTX 260, drivers 270.61. OS Win7 64.
2 - Dual core 2.93ghz core2, GTX 460, drivers 270.61. OS WinXP 32.

On system 2, poclbm.exe hits 50% cpu (all of 1 core) and causes the temperatures to skyrocket when running only on GPU.
On system 1, poclbm.exe hits 25% cpu (again 1 core). 

Since I do not have multiple GPUs in each of these systems, I can't confirm if its the same problem, but considering the other symptoms marked here...

So, it seems that each instance of the miner is using the GPU, but also maxing out 1 core of the CPU per GPU client loaded.  This has been stated many times by m0mchil to not be proper behavior.  Seems it's not relegated just to the ATI cards any more.

[nster]

I'm lucky to have an i7 920 with HT and 2 cards, so both together do 13% after affinity adjustment....

Has anyone found the fix yet?

[Ali_Ze]

im running 4 identical rigs. and on 2 of them im having this issue.

what gives.?

[frankiebits]

Same issue here, tried a bunch of stuff , nothing worked so far. Only thing I haven't tried are different miners.

Anyone else try any?

I guess that is what I will do, I'll come back with the results.

[allinvain]

Same issue here, tried a bunch of stuff , nothing worked so far. Only thing I haven't tried are different miners.

Anyone else try any?

I guess that is what I will do, I'll come back with the results.

Apparently the miner doesn't make any difference. I have the same issue with both guiminer (essentially poclbm with a pretty gui on top) and phoenix.

[gat3way]

GPU_USE_SYNC_OBJECTS works only for SDK2.3 and above. With older SDKs you are out of luck.

[allinvain]

Any way to turn this variable on in Windows? Modify poclbm?

[Ddraig]

I'm having the same issue here.

Running:
ATI 4870 - Single Card w/ 1gig of ram.
Win XP 64bit
8 Gigs RAM
AMD Phenom II x4 940 CPU

[Fiyasko]

Same problem here,
Got two 6990's so 4 gpu's and the each rape a core without me slapping affinity

[BitAlBit]

my problematic situation:
I have on ATI 4670 11.3 & 2.3 SDK. But CPU100% (and GUP with guiminer on always 70°C, too much?).
i seen other posts about cpus but 100% still remain.. 
any solution?

thanks

[allinvain]

So far no matter what I tried in windows I cannot fix this problem. I will try linux mining over the weekend to see if that fixes it.

Guys give this a try:

https://www.bitcoin.org/smf/index.php?topic=7374.0

not saying that it fixes it ...just to try it.

[Fiyasko]

there are ALOT of people in the world that dont know JACK about linux
Very honestly here is my Entire knowledge of Linux

Good for wireless cracking
almost completely open source
If your a noob GTFO
Uses some differnt HDD encryption thingy
and uhhh, Has a penguin, no windows key.
Lots of weird "Buntu" things

Literally that is Everything i know about Linux

[Nythain]

there are ALOT of people in the world that dont know JACK about linux
Very honestly here is my Entire knowledge of Linux

Good for wireless cracking
almost completely open source
If your a noob GTFO
Uses some differnt HDD encryption thingy
and uhhh, Has a penguin, no windows key.
Lots of weird "Buntu" things

Literally that is Everything i know about Linux

I lol'd

[nster]

there are ALOT of people in the world that dont know JACK about linux
Very honestly here is my Entire knowledge of Linux

Good for wireless cracking
almost completely open source
If your a noob GTFO
Uses some differnt HDD encryption thingy
and uhhh, Has a penguin, no windows key.
Lots of weird "Buntu" things

Literally that is Everything i know about Linux

I lol'd

I facepalmed :/

[allinvain]

rofl!!

But seriously Linux and other open source operating systems (OpenBSD, FreeBSD, NetBSD) kick ass. I used to be all hardcore into linux from back in the days of the 2.0 kernel. I was a big slackware fan and was so into compiling all my programs. Along the way the evil M$ empire got me and I installed Windows XP on my main machine (I wanted to play games) and the rest as they say is history. I still use Linux as my server operating system and I refuse to use Windows for that purpose.

You gotta admit that Linux has come a long way - a VERY long way. I don't think M$ is shaking in their boots yet though.

For mining Linux is perfect. It uses minimal resources (can be trimmed to run with very small amounts of ram) and if you use a more user friendly distro like Ubuntu it can be very well suited to quickly putting together a mining system.

Long live Linux!!!

[kstepyra]

Hi!

About CPU usage - i just mounted 1 GPU on core 2 duo and it was 0% on poclbm. Installed another - both uses 1 core at 100% (consuming whole processor at 100%).

Is here any way to stop this? got 2 comps running win 7 (one 64 bit another 32 bit) and both have same problem with multiple GPU's

[huayra.agera]

I would also like to share the same issue: 2 5850s Crossfire 16x and 4x. Two threads of poclbm uses around 25% of CPU each making the whole cpu 50% utilized. On my other mining rig a single 6850 and CPU is @ 12% utilization. I hope this get's fixed.

[kstepyra]

I heard changing GPU_USE_SYNC_OBJECTS  variable to 1 puts cpu's on 0-5% state while mining. Any idea how to change it? in ANY sdk, can be 2.3 or 2.4 even.

[nster]

I heard changing GPU_USE_SYNC_OBJECTS  variable to 1 puts cpu's on 0-5% state while mining. Any idea how to change it? in ANY sdk, can be 2.3 or 2.4 even.

its an environment variable... I tried in Windows didn't help... seems to be only Linux