lowering gpu memory usage under 100% result faster speed?

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lansing
Posts: 33
Joined: Sat Apr 21, 2012 6:52 am

lowering gpu memory usage under 100% result faster speed?

Post by lansing » Wed Feb 19, 2014 9:23 pm

I've ran some benchmarks on a few 1920x1080 clips. When temporal radius was turned on and maximum allowed gpu memory usage was set lower than 100%, most of the time it will increase the speed.

My machine is a i7 4770k @ 4.3Ghz, GeForce GTX 650 Ti Boost @ 1Ghz. When I ran benchmark with use cpu+gpu, memory allowed usage to 100%, I would get around 9.6fps. But when I lower it to 35%-50%, I would get 11fps.

NVTeam
Posts: 2261
Joined: Thu Sep 01, 2005 4:12 pm
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Post by NVTeam » Fri Feb 21, 2014 2:11 pm

Please run Optimize and post log from Optimize window for cases of 100% and 50%.

Thank,
Vlad
Image Image Neat Video team
noise reduction for video and photos

lansing
Posts: 33
Joined: Sat Apr 21, 2012 6:52 am

Post by lansing » Fri Feb 21, 2014 5:55 pm

today I offloaded the AVC stream decoding work from gpu to intel gpu, therefore increased the available gpu memory, and then benchmark for 100% gpu memory allowed usage goes up to 11.8fps

available gpu memory: 657MB

100% allowed gpu memory

Code: Select all

Frame: 1920x1088 progressive, Radius: 1 frame
Running the test data set on up to 8 CPU cores and on up to 1 GPU

CPU only (1 core): 2.15 frames/sec
CPU only (2 cores): 4.31 frames/sec
CPU only (3 cores): 5.38 frames/sec
CPU only (4 cores): 7.75 frames/sec
CPU only (5 cores): 7.94 frames/sec
CPU only (6 cores): 7.87 frames/sec
CPU only (7 cores): 7.87 frames/sec
CPU only (8 cores): 7.58 frames/sec
GPU only (GeForce GTX 650 Ti BOOST): 6.37 frames/sec
CPU (1 core) and GPU (GeForce GTX 650 Ti BOOST): 6.02 frames/sec
CPU (2 cores) and GPU (GeForce GTX 650 Ti BOOST): 8 frames/sec
CPU (3 cores) and GPU (GeForce GTX 650 Ti BOOST): 9.71 frames/sec
CPU (4 cores) and GPU (GeForce GTX 650 Ti BOOST): 11.1 frames/sec
CPU (5 cores) and GPU (GeForce GTX 650 Ti BOOST): 11.6 frames/sec
CPU (6 cores) and GPU (GeForce GTX 650 Ti BOOST): 11.8 frames/sec
CPU (7 cores) and GPU (GeForce GTX 650 Ti BOOST): 11.8 frames/sec
CPU (8 cores) and GPU (GeForce GTX 650 Ti BOOST): 11.6 frames/sec

Best combination: CPU (6 cores) and GPU (GeForce GTX 650 Ti BOOST)
50% allowed gpu memory

Code: Select all

Frame: 1920x1088 progressive, Radius: 1 frame
Running the test data set on up to 8 CPU cores and on up to 1 GPU

CPU only (1 core): 2.14 frames/sec
CPU only (2 cores): 4.26 frames/sec
CPU only (3 cores): 6.02 frames/sec
CPU only (4 cores): 6.8 frames/sec
CPU only (5 cores): 7.58 frames/sec
CPU only (6 cores): 7.63 frames/sec
CPU only (7 cores): 7.52 frames/sec
CPU only (8 cores): 7.25 frames/sec
GPU only (GeForce GTX 650 Ti BOOST): 5.68 frames/sec
CPU (1 core) and GPU (GeForce GTX 650 Ti BOOST): 5.52 frames/sec
CPU (2 cores) and GPU (GeForce GTX 650 Ti BOOST): 7.75 frames/sec
CPU (3 cores) and GPU (GeForce GTX 650 Ti BOOST): 8.93 frames/sec
CPU (4 cores) and GPU (GeForce GTX 650 Ti BOOST): 9.8 frames/sec
CPU (5 cores) and GPU (GeForce GTX 650 Ti BOOST): 11 frames/sec
CPU (6 cores) and GPU (GeForce GTX 650 Ti BOOST): 10.6 frames/sec
CPU (7 cores) and GPU (GeForce GTX 650 Ti BOOST): 10.6 frames/sec
CPU (8 cores) and GPU (GeForce GTX 650 Ti BOOST): 10.6 frames/sec

Best combination: CPU (5 cores) and GPU (GeForce GTX 650 Ti BOOST)

________________________________________________________


available gpu memory: 482MB

100% allowed gpu memory

Code: Select all

Frame: 1920x1080 progressive, Radius: 1 frame
Running the test data set on up to 8 CPU cores and on up to 1 GPU

CPU only (1 core): 2.16 frames/sec
CPU only (2 cores): 4.33 frames/sec
CPU only (3 cores): 5.46 frames/sec
CPU only (4 cores): 6.85 frames/sec
CPU only (5 cores): 7.75 frames/sec
CPU only (6 cores): 7.87 frames/sec
CPU only (7 cores): 7.69 frames/sec
CPU only (8 cores): 7.41 frames/sec
GPU only (GeForce GTX 650 Ti BOOST): 4.1 frames/sec
CPU (1 core) and GPU (GeForce GTX 650 Ti BOOST): 4 frames/sec
CPU (2 cores) and GPU (GeForce GTX 650 Ti BOOST): 5.99 frames/sec
CPU (3 cores) and GPU (GeForce GTX 650 Ti BOOST): 9.09 frames/sec
CPU (4 cores) and GPU (GeForce GTX 650 Ti BOOST): 7.94 frames/sec
CPU (5 cores) and GPU (GeForce GTX 650 Ti BOOST): 7.94 frames/sec
CPU (6 cores) and GPU (GeForce GTX 650 Ti BOOST): 7.75 frames/sec
CPU (7 cores) and GPU (GeForce GTX 650 Ti BOOST): 7.87 frames/sec
CPU (8 cores) and GPU (GeForce GTX 650 Ti BOOST): 7.75 frames/sec

Best combination: CPU (3 cores) and GPU (GeForce GTX 650 Ti BOOST)

50% allowed gpu memory

Code: Select all

Frame: 1920x1080 progressive, Radius: 1 frame
Running the test data set on up to 8 CPU cores and on up to 1 GPU

CPU only (1 core): 2.16 frames/sec
CPU only (2 cores): 4.31 frames/sec
CPU only (3 cores): 5.78 frames/sec
CPU only (4 cores): 6.94 frames/sec
CPU only (5 cores): 7.69 frames/sec
CPU only (6 cores): 7.87 frames/sec
CPU only (7 cores): 7.69 frames/sec
CPU only (8 cores): 7.52 frames/sec
GPU only (GeForce GTX 650 Ti BOOST): 5.92 frames/sec
CPU (1 core) and GPU (GeForce GTX 650 Ti BOOST): 5.62 frames/sec
CPU (2 cores) and GPU (GeForce GTX 650 Ti BOOST): 7.75 frames/sec
CPU (3 cores) and GPU (GeForce GTX 650 Ti BOOST): 9.17 frames/sec
CPU (4 cores) and GPU (GeForce GTX 650 Ti BOOST): 10.6 frames/sec
CPU (5 cores) and GPU (GeForce GTX 650 Ti BOOST): 11.2 frames/sec
CPU (6 cores) and GPU (GeForce GTX 650 Ti BOOST): 11 frames/sec
CPU (7 cores) and GPU (GeForce GTX 650 Ti BOOST): 10.9 frames/sec
CPU (8 cores) and GPU (GeForce GTX 650 Ti BOOST): 10.8 frames/sec

Best combination: CPU (5 cores) and GPU (GeForce GTX 650 Ti BOOST)

Also there's a typo, in the performance tab, megabyte should be MB, not Mb

NVTeam
Posts: 2261
Joined: Thu Sep 01, 2005 4:12 pm
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Post by NVTeam » Fri Feb 21, 2014 6:09 pm

Thank you.

The results look normal in the 657MB case.

What did make the available GPU memory to go down to 482MB?

Thank you,
Vlad
Image Image Neat Video team
noise reduction for video and photos

lansing
Posts: 33
Joined: Sat Apr 21, 2012 6:52 am

Post by lansing » Fri Feb 21, 2014 6:37 pm

well, I opened an archive video in twich.tv

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