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lowering gpu memory usage under 100% result faster speed?

 
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lansing



Joined: 21 Apr 2012
Posts: 33

PostPosted: Wed Feb 19, 2014 9:23 pm    Post subject: lowering gpu memory usage under 100% result faster speed? Reply with quote

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.
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NVTeam



Joined: 01 Sep 2005
Posts: 2237

PostPosted: Fri Feb 21, 2014 2:11 pm    Post subject: Reply with quote

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

Thank,
Vlad
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lansing



Joined: 21 Apr 2012
Posts: 33

PostPosted: Fri Feb 21, 2014 5:55 pm    Post subject: Reply with quote

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:

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:

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:

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:

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
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NVTeam



Joined: 01 Sep 2005
Posts: 2237

PostPosted: Fri Feb 21, 2014 6:09 pm    Post subject: Reply with quote

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
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noise reduction for video and photos
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lansing



Joined: 21 Apr 2012
Posts: 33

PostPosted: Fri Feb 21, 2014 6:37 pm    Post subject: Reply with quote

well, I opened an archive video in twich.tv
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