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Old 4th July 2019, 12:20   #56761  |  Link
chros
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Quote:
Originally Posted by huhn View Post
this is an 960 in idle playing an UHD file... not a 1060 not a 1080 ti they are supposed to be faster you don't pay more for less performance.
it's 5 % at 1 ghz on an 960.
So there IS a diff for You as well not just for us! (the used clock speed doesn't matter until it's the same for both tests)

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you want to know the difference between 2 decoding option why would you care about NGU?
Because until we don't use the *exact* same test setup we can't be sure about the outcome. (and see below)

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you want to know the processing difference between ways to get the data to the renderer nothing else.
But the problem is: the bigger the data that has to go to the system ram the difference is higher!

So, in summary, if you are still interested testing this on your system, I can provide you the test file and all the madvr setting to use (!) during the weekend.
(Otherwise I don't see the point to talk about this anymore , no offense.)
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Old 4th July 2019, 12:31   #56762  |  Link
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so you can't read the memory load?

and what bigger data the decoded frame size from a youtube video with the same size as a BD have 100 % the same size. system ram what are you talking about...

yeah everyone has to use my test settings and file or there test is wrong...
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Old 4th July 2019, 12:47   #56763  |  Link
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Quote:
Originally Posted by huhn View Post
system ram what are you talking about...
dxva2 copyback uses sytem ram, doesn't it?
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Old 4th July 2019, 14:02   #56764  |  Link
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RAM is there to be used.

Native is obviously more efficient than copyback. But the performance impact, while noticeable, isn't that huge that makes it a necessity to use.
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Old 4th July 2019, 14:07   #56765  |  Link
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the system memory shouldn't have an impact on the GPU performance as long as it can do it in realtime. maybe if it is still not clear i tested an UHD file not an SD file here.

the down and upload operation are effecting the GPU.
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Old 4th July 2019, 14:08   #56766  |  Link
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Quote:
Originally Posted by Charky View Post
the immediate future is mostly HDMI 2.1 (and 4k 60 Hz RGB full chroma) and no current GPU supports it.
DisplayPort 1.4 to HDMI 2.1 converter
That would be compatible with AMD Navi, NVIDIA RTX, and Intel Gen11 (IceLake).
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Old 4th July 2019, 14:35   #56767  |  Link
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Quote:
Originally Posted by huhn View Post
the system memory shouldn't have an impact on the GPU performance as long as it can do it in realtime.
...
the down and upload operation are effecting the GPU.
That's correct, but the ram on the GPU is waaaay faster than the system ram, and it seems that the GPU has to wait for the data.

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if it is still not clear i tested an UHD file not an SD file here.
No, it wasn't for me, maybe I missed something on the screenshot.

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Native is obviously more efficient than copyback. But the performance impact, while noticeable, isn't that huge that makes it a necessity to use.
Actually, it is: that was our point with (at least) Manni.
Even the cropped picture (with black bar detection) using dxva2 copyback is slower (!) than processing the whole image with d3d11 native (using the same settings in madvr)

Anyway, I stop this conversion for now, this is how it works on our systems, I/we don't want to convince anybody, everyone can try it for themselves and do/think/believe whatever they like
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Old 4th July 2019, 16:05   #56768  |  Link
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Maybe there's some kind of 'stall' somewhere that blocks the GPU doing other tasks while it's doing texture transfer for copyback, and you don't notice the difference unless you have heavy rendering settings?
On my old Core 2, copyback with 2160p24 HDR maxes out the GPU and rendering times shoot up to 50-65 ms (can't test the Haswell unfortunately as my Radeon doesn't do HEVC).
System RAM definitely has a big impact on copyback performance, so I think it doesn't depend on if you have a 960 or a 1080 Ti but on how fast your memory subsystem is. Maybe also the CPU being busy with other stuff has an impact? For example, did you test if disabling black bar detection changes anything?
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Old 4th July 2019, 16:26   #56769  |  Link
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there are multiply issues with that too.
you don't have PCIe 3 and so your ram should be faster then your PCIe 2.0.
the CPU speed could cripple it too but i doubt blackbar detection could effect it much because it is not the same program and you have more then 1 core there still worth investing.
the first consumer grade CPU with PCIe 3 was ivy bridge AFAIK.
and just have a look at the bus load.

you don't have to test HEVC and and HDR doesn't help here anyway h264 should be good enough.
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Old 4th July 2019, 22:03   #56770  |  Link
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Quote:
Originally Posted by clsid View Post
DisplayPort 1.4 to HDMI 2.1 converter
That would be compatible with AMD Navi, NVIDIA RTX, and Intel Gen11 (IceLake).
Don't bet on these converters, for example, alot of dp1.4 to hdmi 2.0 converts today will output the wrong gamma curve.
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Old 4th July 2019, 22:04   #56771  |  Link
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Has anyone tested 4K-> 8k madvr performance ? 1080ti enough ?
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Old 5th July 2019, 03:52   #56772  |  Link
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For which settings?

My 2080 Ti can do 4Kp60 to 8Kp60 with NGU medium for both chroma and luma (~12ms), NGU high takes ~16ms, while very high takes ~44ms. Using Bicubic for chroma upscaling instead drops rendering times by about 2.5ms. This is without HDR, artifact removal, post processing, or trade quality for performance options.
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Old 5th July 2019, 05:17   #56773  |  Link
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Is NGU very high for luma worth sacrificing other settings, if your GPU can manage ? Or NGU high is good enough ?

Last edited by nsnhd; 5th July 2019 at 05:21.
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Old 5th July 2019, 08:11   #56774  |  Link
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Dear Friends

How madVR is dealing with AMD CPU and GPU? I am going to buy Ryzen 7 3700 and RX5700XT. Will it be enough for better settings in madVR?

Sincerely
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Old 5th July 2019, 09:37   #56775  |  Link
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Noone here has touched either of those, so we don't know. That said CPU is mostly irrelevant for madVR. GPU, we'll have to see. Polaris was somehow rather bad for madVR, if that continues with NAVI we won't know until someone tests.
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Old 5th July 2019, 10:05   #56776  |  Link
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Quote:
Originally Posted by el Filou View Post
For example, did you test if disabling black bar detection changes anything?
I don't remember But for me the only advantage of using copyback would be to utilise black bar detection+cropping to save performance, and that's not the case. Otherwise I don't mind the full image processing and it will make to write profile rules easier.
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Old 5th July 2019, 13:08   #56777  |  Link
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Quote:
Originally Posted by Asmodian View Post
For which settings?

My 2080 Ti can do 4Kp60 to 8Kp60 with NGU medium for both chroma and luma (~12ms), NGU high takes ~16ms, while very high takes ~44ms. Using Bicubic for chroma upscaling instead drops rendering times by about 2.5ms. This is without HDR, artifact removal, post processing, or trade quality for performance options.
Can it do 4k 24p + Lanczos chroma + NGU Luma + HDR-SDR + 3DLut , Not worried about 60p material, only 4K Bluray remuxes
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Old 5th July 2019, 13:12   #56778  |  Link
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Is NGU very high for luma worth sacrificing other settings, if your GPU can manage ? Or NGU high is good enough ?
No, put everything into NGU Luma first.
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Old 5th July 2019, 13:55   #56779  |  Link
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No, put everything into NGU Luma first.
I mean Luma in my question
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Old 5th July 2019, 16:48   #56780  |  Link
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Is NGU very high for luma worth sacrificing other settings, if your GPU can manage ? Or NGU high is good enough ?
Trust your own eyes. Can you see the difference ? If you can't, then it's good enough
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