[FFmpeg-user] RES: A question on the Quadro P6000 and maximum simultaneous NVENC encodes in FFmpeg

[Yang Zhang]

Hi,

I have a software for provide Nvidia GPU based transcoding. first of
all, you don't have to use P6000, it's expensive. and same transcoding
performance can be done with GTX 1060 or 1070.  each 1060 can
transcoding 25 hd1080 or 40 hd720 or 60+ hd480 channels. so basically,
4 GTX 1060 can transcoding 100 hd1080 channels. perhaps you have
question about the GTX series card is limited 2 maximum concurrent
sessions, but the software patched the driver automatically, so there
is no such problem.

Here is the link of the software: http://www.xaccel-codec.com

On 8/24/18, Pedro Daniel Costa <portalnet2 at outlook.com.br> wrote:
> Ok
>
> But with the TESLA models, did you have any issues over 40 streams?
>
> I am planning on budge project to run minimum 100channels
>
> -----Mensagem original-----
> De: ffmpeg-user [mailto:ffmpeg-user-bounces at ffmpeg.org] Em nome de Dennis
> Mungai
> Enviada em: quinta-feira, 23 de agosto de 2018 13:54
> Para: FFmpeg user questions
> Assunto: [FFmpeg-user] A question on the Quadro P6000 and maximum
> simultaneous NVENC encodes in FFmpeg
>
> Hello there,
>
> For users with this specific card (and FFmpeg installed), kindly clarify on
> the following:
>
> (a). How many simultaneous encoder sessions can you run on this card?
>
> (b). Have you ran into any issues, such as stuttering and dropping streams
> with multiple concurrent encodes?
>
> I ask because of a recent case where adding more than ~40 concurrent encodes
> would make the output "drop" and stutter massively, as if FFmpeg itself was
> hanging, despite the GPU having more than enough VRAM (24GB?) and resources
> (under ~11% utilization according to nvidia-smi), implying some sort of
> artificial limitation in effect despite the GPU support matrix specifying
> otherwise:
> https://developer.nvidia.com/video-encode-decode-gpu-support-matrix
>
> Your feedback on this is appreciated.
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