dual gpu- not what you think

[drobo]

@Ipopov50

I think apocracy is right about the GeForce 8800 GTX being CUDA supported and DharmaBummed69 may be on to something also about DVDFab option recognition and its relation to OS. Nvidia says the 8800 GTX is CUDA supported and GPU-Z recognizes the card as a CUDA supported card. I believe the problem lies in the fact the G80 chip in this card only uses CUDA to encode not decode. I know it works because I have used apps that implement CUDA to encode h.264 codec that have a switch to use CUDA or not. With CUDA on the encode is 3.5 to 4 times faster than with no CUDA engaged. OK, I will say it, Muvee (ban me). I am guessing DVDFab only recognizes and uses CUDA in a card that can both encode and decode and doesn't see the encode only option. I am not a GFX expert and it's only a guess.

[DharmaBummed69]

Just have to say something based on my experiences. DVDFab doesn't see all the options depending on what operating system your using. This is for DXVA not CUDA but does happen. On my ATI Raedeon HD 5770 DXVA is available on Windows XP and Windows 7 but not on Vista 32-bit or 64-bit. I've posted this but had no reply as to why in one version of Windows DVDFab will support DXVA on my card but on another it's not available. Obviously my card supports DXVA, wether DVDFab supports it depends on the OS I'm using. And no offense but the stock moderator answer is always that it's a problem with your computer not a problem with DVDFab until a new version comes out that fixes the problem that wasn't DVDFab's.

[IPopov50]

If you do not have CUDA option in any of the A/V Codec settings, your card is not CUDA. Period. You can talk to nVIDIA and ask them a question. However, I do reserve right to be wrong though
I wish I'm wrong, really...

[apocracy]

according to nvidia it is

[IPopov50]

i ended up taking the nvidia card out because dvd fab would not let me turn on any cuda functions

It's because there's nothing to turn on. Your card isn't CUDA enabled, that's it.

[apocracy]

i ended up taking the nvidia card out because dvd fab would not let me turn on any cuda functions

[IPopov50]

drobo,
I hope you have change your opinion towards DVDFab, and that was my goal. I have almost unlimited faith in DVDFab and ready to defend it using any means (including my patience
Please forgive me, I knew that your CUDA is OK from your post #7 where you said your speed was 1.95 MB/s, I just wanted you to come to this conclusion on your own. I was puzzled (still am) by the fact that your card lacks capability to communicate with monitors. I have read a few forums, and I think on Guru3D forum I have read that earlier cards do not have built-in sensors reporting capability, nor (some of them) because of that, do not have variable speed fans. Anyway, it's not important at this point.
Now, if you really want to see difference between CoreAVC and CUDA - take AVC content and run it with (a) CoreAVC set for H264 and (b) CUDA set fir H264. Leave everything else intact. You can go even further and set your encoder for "software" and create "clean" environment for CoreAVC/CUDA decoder.
BTW, all cards are enabled for both CUDA encoding and decoding, only lower-performance cards (like 8 and 9 series) can't keep up with the process. That's why DVDFab developers recommend to use acceleration only with encoder. Your settings I found optimal for your configuration
So, you are good for now... I hope you wouldn't jump to conclusion before you get all facts together anymore. Thx for your patience and willingness.
And hey, don't be a stranger, visit forum and participate in discussions

[drobo]

Sorry. I know I hijacked this thread somewhat but I still think most of it was relevant. Because I own one, I do know the GeForce 8800 GTX does only CUDA encode or decode, but not both, I can't remember which. DVDFab does not recognize it. I just could never figure out why DVDFab wouldn't recognize it for whichever process it does do.

[AGJ]

I wonder what happened to apocracy the member who started this thread as it looks as if they just posted and left. Wonder if they learned from what was done here

[drobo]

Bingo, Captain. I set everything to software and processed the same MPEG4/AVC movie as before and after 2% in the rate settled at 0.73 MB/s. I turned back on CoreAVC, CUDA, and CUDA+Software and ran the job. After about 2% in the rate was 2.17 MB/s, a three fold increase. Strangely, I even turned on nVidia's system monitor during the final run and it showed no GPU useage on their own card. Odd, hey. So there is a nice performance increase but I don't know how much is due to CoreAVC or CUDA but the important part is an increase. Now, the challenge becomes to find a GPU monitoring app that can read this card. BTW, apologies offered for frustrated sniping.

Thanks for your patience and help

[IPopov50]

Well, congrats... your GPU monitor can't read this card. So, you can't really say load on your GPU. I can tell that your card is participating in conversion process, your CUDA is working, I just can't tell you on which extend. You CUDA is working and that's the fact, there is no way you would get this speed with your Core2Duo on VC-1 content. (1.95 MB/s is about 12-15fps). For sake of experiment, if you don't mind, please do couple of things to see things in perspective:
(1) Please find AVC source, not VC-1 and see what speed it will produce
(2) Set every setting in A/V Codec to "software" and see speed then.
Would you do it for me, please!!

[drobo]

Playing movie with Media Player Classic Home Cinema. GPU load is 0% and Vmem is 0%. In the lower left corner of the player it says "Playing [DXVA].

[IPopov50]

OK, one more thing. Please play any movie with any player on your computer and tell me what GPU and memory usage?

[drobo]

Graphics adapter is set to GeForce 9800 GT which is what I have. No, it is not changeable.

[IPopov50]

OK, can you do me a favor, can you go to GPU Monitor Settings and tell me what Graphic Adapter it set for, and can you change it?