Multi thread GPU

[nanoprobe]

How many WU's are you running now on each GPU(type of GPU?)
I had this problem while running 2 and 4 but it dissappared when I switched to 6, three could stop/get stuck while one keeps going or all stopped.

7970s. Tried 4,5,6,7 WUs per GPU. Had stuck ones at each setting.

[nanoprobe]

Is anyone getting a constant >90% GPU usage?
I still get periods of 0-60% between WUs even when running 6 at a time.

If they all or part go to the CPU part to finish you'll see lower GPU usage.

[Mydog]

7970s. Tried 4,5,6,7 WUs per GPU. Had stuck ones at each setting.

Weird, I only run GPU WU's in my 7970 rig with this setup:
GPU: HD7970(Ref. PCB not sure which brand as GPU-z only shows ATI) stock 925/1325MHz OC'ed to 1000/1325MHz on stock volts.
CPU: 3770K OC'ed to 4,7GHz(Water cooled)
Mobo: Asus Maximus V Gene
Memory: 8GB G.Skill RipjawsZ 2133 CL 9
SSD: 120GB OCZ Vertex3
PSU: cheap 450W
running on Win7 ultimate with Boinc 7.0.28 and the AMD app_info.xml

[bluestang]

I get around 75% with 2 7970's sharing a 980x at 4.5. I'm not sure how you are measuring GPU useage but GPU-z has a useful "average" feature. Go to the sensors tab and click on the little GPU load drop down menu and select "show average reading". Let it run for several hours to get a good average reading.

I don't think it's possible to get >90% average on these high end AMD cards. I feed my 7870 with 8 threads of a 980x at 3.8GHz and it only averages 87% GPU load.

You run 8 GPU WU's on the 7870?

[Rob_B]

It looked to be working fine running 2 WU's. But it got stuck right after I checked it this morning. When I got home from work it was stuck on 2 WU's for 10 hours.

It worked fine a lot longer, but it isn't fixed yet after the registry change.

[pirogue]

For anyone using firefox and having weird hanging/driver not responding errors, check this:
https://support.mozilla.org/en-US/questions/935632

I just disabled it because I started having problems and it seemed to always be while I was browsing. I don't know if it's the solution, but it appears the hardware acceleration is not ready for prime time.

[Bun-Bun]

It looked to be working fine running 2 WU's. But it got stuck right after I checked it this morning. When I got home from work it was stuck on 2 WU's for 10 hours.

It worked fine a lot longer, but it isn't fixed yet after the registry change.

Check your reg setting. I had put my EaRecovery to 1 instead of 0 which is an easy mistake to do.

[fallwind]

You run 8 GPU WU's on the 7870?

Yep, it's been working great for a few days now. These high end cards need alot of CPU threads going to keep them busy.

[Bun-Bun]

So my 7950 I have in a box beside me should handle 8 threads...

[fallwind]

For sure! When I first fire it up I like to pause all the WU and then resume them 2 at a time in stages so the get spread out in their start and finish times.

[Bun-Bun]

That's a good idea.

Vinas's multi client method takes care of that itself fairly nicely. I don't feel like setting up 8 seperate clients though. Think I will stick to app_info for this one lol

EDIT:

Hey fellow SK'er where you located?

[kik]

My 5870 stays at 98% all the time with 4 threads running because they are not synced up. However, I see that most of the time, 3 threads will sync up for some reason and the 4th is slightly faster and therefore runs out of sync. I don't know why the other 3 threads would sync up.

I get around 75% with 2 7970's sharing a 980x at 4.5. I'm not sure how you are measuring GPU useage but GPU-z has a useful "average" feature. Go to the sensors tab and click on the little GPU load drop down menu and select "show average reading". Let it run for several hours to get a good average reading.

I don't think it's possible to get >90% average on these high end AMD cards. I feed my 7870 with 8 threads of a 980x at 3.8GHz and it only averages 87% GPU load.

If they all or part go to the CPU part to finish you'll see lower GPU usage.

Thanks for the input.
Most of my threads tend to sync up after a while, even when I try to delay some of them.

fallwind: After 30mins I'm getting 70% average GPU load.

[bluestang]

You run 8 GPU WU's on the 7870?

Yep, it's been working great for a few days now. These high end cards need alot of CPU threads going to keep them busy.

Great, nice to know. Is the PC still usable running 4? May have to try it out until I get my 2nd card and use up all 8 of my threads.

So my 7950 I have in a box beside me should handle 8 threads...

For sure! When I first fire it up I like to pause all the WU and then resume them 2 at a time in stages so the get spread out in their start and finish times.

Thanks for the tip on staggering the WU to keep the GPU loaded at all times. Should help keep temps more stabalized.

[pirogue]

For anyone using firefox and having weird hanging/driver not responding errors, check this:
https://support.mozilla.org/en-US/questions/935632

I just disabled it because I started having problems and it seemed to always be while I was browsing. I don't know if it's the solution, but it appears the hardware acceleration is not ready for prime time.

Nevermind. It doesn't seem to help. Maybe it's just the driver.???

[Rob_B]

Check your reg setting. I had put my EaRecovery to 1 instead of 0 which is an easy mistake to do.

I took the info from the first page of this thread. And that said to put it to 1. I will change that now.

[bluestang]

Nevermind. It doesn't seem to help. Maybe it's just the driver.???

Everytime I had a crash with my 7870 it was always when browsing or idle, never under load. Make me think an issue with 2D clocks/volts or even a DirectX issue. I'm cleaning out my drivers and going back to 12.3 as I've read it doesn't happen on that driver version. Who knows, but we'll see soon enough.

[Bun-Bun]

I took the info from the first page of this thread. And that said to put it to 1. I will change that now.

Here is the link to the actual microsoft article

http://msdn.microsoft.com/en-us/libr...(v=vs.85).aspx

Even says in there the code is complex and could cause compatibility issues with drivers. I am surprised this isn't a more widely known fix to the 1000's of people having issues with this.

[fallwind]

Thanks for the input.
Most of my threads tend to sync up after a while, even when I try to delay some of them.

fallwind: After 30mins I'm getting 70% average GPU load.

Sounds about right. Leave it run for a few hours and the % may go up a bit. You can give it more threads if needed.

@bluestang: PC is perfectly useable for everyday stuff. I get the occasional stutter but nothing serious.

[nanoprobe]

I took the info from the first page of this thread. And that said to put it to 1. I will change that now.

Mine was set @ 1 too. Changed it. I'm assuming we leave DisableBugCheck=1?

[Bun-Bun]

Mine was set @ 1 too. Changed it. I'm assuming we leave DisableBugCheck=1?

that's correct.

[nanoprobe]

that's correct.

[0ne.shot]

I'm pretty jealous of you all. I'm trying to sell my GTX 570 to get a 7950 to take advantage of the just announced game bundle and to get some crazy numbers on WCG. The 570 struggles on this app.

[Rob_B]

Some call it HCC GPU and others call it a game bundle.

[Movieman]

Some call it HCC GPU and others call it a game bundle.

be nice to the poor lad. He just got his first million today and is still in 7th heaven!

Congrats one.shot..I remember my first million and walking around with a smile on my face all day!

[Rob_B]

Yeah, congrats One.shot. That first one is a nice one. And the start of more and more points...............and rigs............and upgrades..........