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Out of the loop - how to maximise PPD? - Page 2

post #11 of 19
Still trying to break back into the top 200, eh?

I keep trying to fold but then I keep getting my electricity bill. frown.gif
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post #12 of 19
Things have changed a lot since you were around.

I think it really depends on what GPU you're using and what generation.

For me in Windows anyway (sort of need it especially since I'm a Surround user), it seems that Pascal is basically a resource hog and the Nvidia drivers with Pascal seem to require a lot of CPU overhead. Meaning, while folding on my 1080ti's each card uses about a core and a half on my i7-4790k. I was pretty disappointed to say the least. Before this I had a pair of R9-Fury's in my system, and I mined on them more than I folded, but I recall when I did fold on them that the driver overhead wasn't so bad.

Are you still going to be using a GTS 450 or do you have something else now?
post #13 of 19
Quote:
Originally Posted by neurotix View Post

Things have changed a lot since you were around.

I think it really depends on what GPU you're using and what generation.

For me in Windows anyway (sort of need it especially since I'm a Surround user), it seems that Pascal is basically a resource hog and the Nvidia drivers with Pascal seem to require a lot of CPU overhead. Meaning, while folding on my 1080ti's each card uses about a core and a half on my i7-4790k. I was pretty disappointed to say the least. Before this I had a pair of R9-Fury's in my system, and I mined on them more than I folded, but I recall when I did fold on them that the driver overhead wasn't so bad.

Are you still going to be using a GTS 450 or do you have something else now?

Thats the case of every OpenCL app. NV uses more CPU to do the same work as AMD.
post #14 of 19
Quote:
Originally Posted by mmonnin View Post

Thats the case of every OpenCL app. NV uses more CPU to do the same work as AMD.

Er, yeah, but back when zodac was around and folding editor (2010~2011) this wasn't the case. I recall quite clearly back then (when 5870s and 580s were king) being told that Nvidia had pretty much no driver overhead, whereas AMD used 1 core per card. I just had a 6870 then but wanted to do CPU folding, and had to drop down to 5 core folding on my 1090T as my 6870 required a core to fold.

Now it seems to be the opposite with Pascal. hertz confirmed this for me in the Brass Bottom Boys thread.

No idea how it would be now if zodac is still using a GTS 450.
post #15 of 19
Quote:
Originally Posted by neurotix View Post

Er, yeah, but back when zodac was around and folding editor (2010~2011) this wasn't the case. I recall quite clearly back then (when 5870s and 580s were king) being told that Nvidia had pretty much no driver overhead, whereas AMD used 1 core per card. I just had a 6870 then but wanted to do CPU folding, and had to drop down to 5 core folding on my 1090T as my 6870 required a core to fold.

Now it seems to be the opposite with Pascal. hertz confirmed this for me in the Brass Bottom Boys thread.

No idea how it would be now if zodac is still using a GTS 450.

Back then NV and AMD had their own cores and WUs. Moving to OpenCL allowed every GPU to run the same WU.
post #16 of 19
Quote:
Originally Posted by zodac View Post
 
Quote:
Originally Posted by tictoc View Post

I would say it is worth it to run CPU tasks in a Linux VM. With one core on your machine sitting idle, any overhead from the VM will be covered, and when I ran the new CPU tasks on my 2P the ppd was higher in Linux.

Away from my computer at the moment, but I can dig up the Linux to Windows comparison later tonight.

Cheers, I'd appreciate it. thumb.gif

 

Looks like I never finished the Windows/Linux comparison.  I do remember the Linux numbers being quite a bit better, but I never went back to Windows to test with the same configuration that I was using in Linux.  

 

I have a few days of BOINC tasks to crunch and then I can fire up a few VMs and let them run for a few days.  With all of the focus on GPUs there isn't much info on CPU tasks anymore.

post #17 of 19

Who spelled the thread title? :applaud:

 
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post #18 of 19
Quote:
Originally Posted by BWG View Post

Who spelled the thread title? applaud.gif

Someone not in our neighborhood!

^^With the correct spelling.
post #19 of 19
Thread Starter 
Quote:
Originally Posted by BWG View Post

Who spelled the thread title? applaud.gif

I spelted it good.
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