I see unrestricted in the # of concurrent sessions column - https://screenshots.firefox.com/ZTBoEcMVKO336dh8/developer.nvidia.com which is why I bought this GPU in the first place.
Your solution to override the hard-coded limits seems promising at the first glance. I'll try that soon and report back my findings. Thank you for your help. - Yugandhar On Wed, Jul 18, 2018 at 2:46 PM Dennis Mungai <[email protected]> wrote: > Also, see this list: > https://developer.nvidia.com/video-encode-decode-gpu-support-matrix > > You have the Quadro P4000, which is artificially crippled to ~2 concurrent > sessions according to the documentation above. > > On 18 July 2018 at 22:34, Dennis Mungai <[email protected]> wrote: > > > NVENC runs on a discrete silicon IP core (SIP) block in the GPU, and not > > on the GPU's shaders. > > That SIP block has hard-coded limits (set in firmware) to ensure that > > these who need more than the artificial limit buy Tesla-grade hardware. > > > > Marketing shills by NVIDIA. > > > > You can override this limit by using Keylase's nvidia patcher here: > > https://github.com/keylase/nvidia-patch > > > > On 18 July 2018 at 22:00, Yugandhar Veeramachaneni <[email protected]> > > wrote: > > > >> I'm a little confused here because the GPU resource utilization is well > >> below the hard limits. > >> > >> When I run nvidia-smi, this is what I get - > >> > >> yugandharv@eclairs:~$ nvidia-smi > >> Thu Jul 19 00:29:45 2018 > >> +----------------------------------------------------------- > >> ------------------+ > >> | NVIDIA-SMI 390.67 Driver Version: > >> 390.67 | > >> |-------------------------------+----------------------+---- > >> ------------------+ > >> | GPU Name Persistence-M| Bus-Id Disp.A | Volatile > Uncorr. > >> ECC | > >> | Fan Temp Perf Pwr:Usage/Cap| Memory-Usage | GPU-Util > Compute > >> M. | > >> |===============================+======================+==== > >> ==================| > >> | 0 Quadro P4000 Off | 00000000:02:00.0 Off | > >> N/A | > >> | 52% 55C P0 38W / 105W | 6646MiB / 8117MiB | 25% > >> Default | > >> +-------------------------------+----------------------+---- > >> ------------------+ > >> > >> > >> +----------------------------------------------------------- > >> ------------------+ > >> | Processes: GPU > >> Memory | > >> | GPU PID Type Process name > >> Usage | > >> |=========================================================== > >> ==================| > >> | 0 983 C /home/yugandharv/bin/ffmpeg > >> 229MiB | > >> | 0 995 C /home/yugandharv/bin/ffmpeg > >> 229MiB | > >> | 0 1010 C /home/yugandharv/bin/ffmpeg > >> 229MiB | > >> | 0 1012 C /home/yugandharv/bin/ffmpeg > >> 215MiB | > >> | 0 1017 C /home/yugandharv/bin/ffmpeg > >> 235MiB | > >> | 0 1986 C /home/yugandharv/bin/ffmpeg > >> 224MiB | > >> | 0 8484 C /home/yugandharv/bin/ffmpeg > >> 229MiB | > >> | 0 8497 C /home/yugandharv/bin/ffmpeg > >> 229MiB | > >> | 0 8538 C /home/yugandharv/bin/ffmpeg > >> 225MiB | > >> | 0 11097 C /home/yugandharv/bin/ffmpeg > >> 193MiB | > >> | 0 11109 C /home/yugandharv/bin/ffmpeg > >> 193MiB | > >> | 0 11121 C /home/yugandharv/bin/ffmpeg > >> 193MiB | > >> | 0 11134 C /home/yugandharv/bin/ffmpeg > >> 229MiB | > >> | 0 11169 C /home/yugandharv/bin/ffmpeg > >> 225MiB | > >> | 0 11175 C /home/yugandharv/bin/ffmpeg > >> 193MiB | > >> | 0 11186 C /home/yugandharv/bin/ffmpeg > >> 229MiB | > >> | 0 11195 C /home/yugandharv/bin/ffmpeg > >> 229MiB | > >> | 0 11207 C /home/yugandharv/bin/ffmpeg > >> 224MiB | > >> | 0 11222 C /home/yugandharv/bin/ffmpeg > >> 229MiB | > >> | 0 11226 C /home/yugandharv/bin/ffmpeg > >> 225MiB | > >> | 0 11231 C /home/yugandharv/bin/ffmpeg > >> 229MiB | > >> | 0 11234 C /home/yugandharv/bin/ffmpeg > >> 225MiB | > >> | 0 11235 C /home/yugandharv/bin/ffmpeg > >> 229MiB | > >> | 0 11237 C /home/yugandharv/bin/ffmpeg > >> 229MiB | > >> | 0 11240 C /home/yugandharv/bin/ffmpeg > >> 229MiB | > >> | 0 11252 C /home/yugandharv/bin/ffmpeg > >> 229MiB | > >> | 0 11300 C /home/yugandharv/bin/ffmpeg > >> 229MiB | > >> | 0 13264 C /home/yugandharv/bin/ffmpeg > >> 193MiB | > >> | 0 14176 C /home/yugandharv/bin/ffmpeg > >> 193MiB | > >> | 0 30258 C /home/yugandharv/bin/ffmpeg > >> 229MiB | > >> +----------------------------------------------------------- > >> ------------------+ > >> > >> > >> Thanks, > >> > >> Yugandhar > >> > >> On Wed, Jul 18, 2018 at 11:55 AM Dennis Mungai <[email protected]> > wrote: > >> > >> > You mentioned 30 streams. And more cause this to "fail". > >> > > >> > Perhaps the Quadro line has a maximum simultaneous encoder limit of > 30, > >> > similar to the GeForce's limit of 2? > >> > > >> > On Wed, Jul 18, 2018, 19:28 Yugandhar Veeramachaneni < > >> [email protected]> > >> > wrote: > >> > > >> > > Hello everyone, > >> > > > >> > > I'm currently using an NVIDIA Quadro P4000 GPU to transcode > multicast > >> UDP > >> > > streams to RTMP streams. I have quite about 30 streams running in > >> > parallel > >> > > on this GPU and I have no problems so far. I tried adding more today > >> and > >> > > many of them are failing with this error. > >> > > > >> > > [h264_nvenc @ 0x55ef24458040] Loaded Nvenc version 8.1 > >> > > [h264_nvenc @ 0x55ef24458040] Nvenc initialized successfully > >> > > [h264_nvenc @ 0x55ef24458040] 1 CUDA capable devices found > >> > > [h264_nvenc @ 0x55ef24458040] [ GPU #0 - < Quadro P4000 > has > Compute > >> SM > >> > > 6.1 ] > >> > > [h264_nvenc @ 0x55ef24458040] Failed creating CUDA context for > NVENC: > >> 0x2 > >> > > [h264_nvenc @ 0x55ef24458040] No NVENC capable devices found > >> > > [h264_nvenc @ 0x55ef24458040] Nvenc unloaded > >> > > > >> > > Full log is pasted at > >> > > > https://gist.github.com/yugandhar91/47a1c30482d1e89a47f7b6fb6dd420ca > >> > > > >> > > Can you please point me to my mistake? > >> > > > >> > > Thanks, > >> > > > >> > > Yugandhar > >> > > _______________________________________________ > >> > > ffmpeg-user mailing list > >> > > [email protected] > >> > > http://ffmpeg.org/mailman/listinfo/ffmpeg-user > >> > > > >> > > To unsubscribe, visit link above, or email > >> > > [email protected] with subject "unsubscribe". > >> > _______________________________________________ > >> > ffmpeg-user mailing list > >> > [email protected] > >> > http://ffmpeg.org/mailman/listinfo/ffmpeg-user > >> > > >> > To unsubscribe, visit link above, or email > >> > [email protected] with subject "unsubscribe". > >> _______________________________________________ > >> ffmpeg-user mailing list > >> [email protected] > >> http://ffmpeg.org/mailman/listinfo/ffmpeg-user > >> > >> To unsubscribe, visit link above, or email > >> [email protected] with subject "unsubscribe". > >> > > > > > _______________________________________________ > ffmpeg-user mailing list > [email protected] > http://ffmpeg.org/mailman/listinfo/ffmpeg-user > > To unsubscribe, visit link above, or email > [email protected] with subject "unsubscribe". _______________________________________________ ffmpeg-user mailing list [email protected] http://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email [email protected] with subject "unsubscribe".
