Hello Ricardo and all,

Just to close this discussion: The transcoding on my converted GTX690 works OK, however the computer became a bottleneck for more than 4-5 channels at once. The computer is quite decent - AMD FX(tm)-4170 Quad-Core Processor at 4.1GHz with 4G memory (no swap at all), but it takes about one core to assist the GTX960 card per channel, this with no audio manipulation -c:a copy. Anyway, with libx264 the computer can not make one channel, and by far.

As for the question what is k10: look at the 'lspci' below, the tesla K10 is a professional equivalent (slower, however) of GTX690. The conversion of GTX690 to K10 is done as per this article: http://www.eevblog.com/forum/chat/hacking-nvidia-cards-into-their-professional-counterparts/ - Hats down to a hacker of this magnitude!

All the best, George.


On 2016-02-15 02:04, Ricardo wrote:
very interesting ;) i have a gtx960. I'm thinking in do some test.
Only one thing, what is a k10?
thanks!



El 15 feb 2016, a las 2:04, subscripti...@znet.ca <subscripti...@znet.ca> escribió:

Hello again everyone,

This is just to note, if someone is interested, that after converting the second GPU of my GTX690 to K10, the card started transcoding >2 channels at once - managed to put up to 6 channels at once, full HD mpeg2 at ~18Mb/s per channel. Now there is another problem - the card freezes the computer if I put > 6 channels - I put a watchdog to reboot it, but this is not a solution. Theoretically the card has to do about 16 HD channels (240 fps per GPU, 2 GPU's), but it freezes far before. Investigating.

Thanks, George.

On 2016-02-12 22:24, subscripti...@znet.ca wrote:
Hello again,
My problem is probably coming from the fact that the GTX690 card is
half-converted to a K10 one; one GPU is presented as K10 while the
other forms half GTX690. The driver is likely quite puzzled what this
hardware is and how to drive it. So, next step is to make the GPU 0 to
identify itself as K10, then I shall be able to continue.
Thanks, george.
On 2016-02-12 22:02, subscripti...@znet.ca wrote:
Hello everyone,
Please disregard previous mail; I managed to start two channels on the
same GPU, however it is unreliable - first channel will start every
time, while second may fail or work. Investing. Just for information,
card is:
4:00.0 3D controller: NVIDIA Corporation GK104 [GeForce GTX 690] (rev a1) 04:00.1 Audio device: NVIDIA Corporation GK104 HDMI Audio Controller (rev a1)
05:00.0 VGA compatible controller: NVIDIA Corporation GK104GL [Tesla
K10] (rev a1)
05:00.1 Audio device: NVIDIA Corporation GK104 HDMI Audio Controller (rev a1)
Sorry for the noise,
George.
On 2016-02-12 19:17, subscripti...@znet.ca wrote:
Hello,
I am using an GTX690 unlocked card (equivalent to double K10) to
transcode live mpeg2 to h264 as here:
/usr/local/bin/ffmpeg -i udp://239.255.254.2:1234?overrun_nonfatal=1
-y -c:a copy -c:v nvenc -b:v 4M -profile:v high -preset default
-bufsize 8M -s hd720 -segment_list_flags live -segment_time 4
-segment_format mpeg_ts -gpu 1 -metadata title=RDI m3u/RDI/stream.m3u8
All is is fine (thanks to Moritz Barsnick from this list for help)
till I transcode only one channel per gpu. If I however send a second
channel to the same gpu (-gpu 1 above), the ffmpeg will refuse to
start.
So, my question is if there is a way to have >1 instance of ffmpeg
using the same GPU at the same time? The GPU's have enough power for
several channels in parallel.
In /dev I have: /dev/nvidia0 /dev/nvidia1 /dev/nvidiactl /dev/nvidia-uvm
Any suggestion appreciated,
Thanks, George.
_______________________________________________
ffmpeg-user mailing list
ffmpeg-user@ffmpeg.org
http://ffmpeg.org/mailman/listinfo/ffmpeg-user
_______________________________________________
ffmpeg-user mailing list
ffmpeg-user@ffmpeg.org
http://ffmpeg.org/mailman/listinfo/ffmpeg-user
_______________________________________________
ffmpeg-user mailing list
ffmpeg-user@ffmpeg.org
http://ffmpeg.org/mailman/listinfo/ffmpeg-user
_______________________________________________
ffmpeg-user mailing list
ffmpeg-user@ffmpeg.org
http://ffmpeg.org/mailman/listinfo/ffmpeg-user
_______________________________________________
ffmpeg-user mailing list
ffmpeg-user@ffmpeg.org
http://ffmpeg.org/mailman/listinfo/ffmpeg-user

_______________________________________________
ffmpeg-user mailing list
ffmpeg-user@ffmpeg.org
http://ffmpeg.org/mailman/listinfo/ffmpeg-user

Reply via email to