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robotrapids
Participating Frequently
May 5, 2018
Answered

Media encoder only ultilizes 22-25% CPU on render. Help

  • May 5, 2018
  • 1 reply
  • 31923 views

Hi,

I just put together a new rig with a focus on CPU rendering (i7 8700k).

When I use Media Encoder render any file (uncompressed or compressed - H264) my CPU only uses up to 25% of load capacity to process.

How can I increase this amount?

Please help and many thanks.

Ben.

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      This topic has been closed for replies.
      Correct answer Bill Gehrke

      Maybe Bill Gehrke or RjL190365 could chime in here.


      I do not use the Media Encoder.  It is dynamical linked (I believe via Ethernet) to Premiere.  I only use direct export from Premiere.  Early development of our PPBM we found that the dynamic link method was not a good benchmark-able test.  When we switched to direct export testing we found much more repeatable results

      Here is a software only export from Premiere showing 100% CPU usage

      This is one of the four tests in PPBM, the CPU intensive timeline export .  Here all four test results;

      "91","62","24","233", Premiere Version:, 12.1.1.10

      Exporting that same timeline which has many GPU accelerated effects and feature with my SC GTX 1060 6GB reduced that 233 seconds to 24 seconds.

      And yes,  the export device was a Samsung Portable T5 USB 3 SSD, why don't you run the PPBM benchmark

      1 reply

      Peru Bob
      Community Expert
      Peru BobCommunity Expert
      Community Expert
      May 5, 2018

      What is your hard drive setup (how many, what kind, what is on each, and how full)?

      What graphics card do you have?

      R
      robotrapidsAuthor
      Participating Frequently
      May 5, 2018

      Hi Bob,

      Thank you for replying. It seems that this issue is either not affecting others or something that is of not much interest.

      I guess I was expecting to wake up to a few more replies and maybe even an Adobe admin one lol.

      In regards to your questions, I don't see how any of that is relevant to CPU load but:

      SSD system drive

      WD Black Work drive

      Seagate Barracuda Cache drive

      GTX770

      Regardless of other hardware bottlenecking possibilities the CPU load should be the same and put strain on the other items in the chain.

      I have heard rumors/read on other sites that the problem and bottleneck is the software itself (Adobe CC Premiere, AE and AME).

      These sites state that Adobe has not made adjustment in the software for the rendering to be processed by more that 1 core/thread etc - Ie. new Gen 8 CPUs.

      Is this possible?

      Is the bottleneck the software/Adobe?

      Are there any settings, scripts, adjustments etc I can use to force more CPU load?

      25% is dismal.

      Thanks in advance,

      Ben.

      R
      robotrapidsAuthor
      Participating Frequently
      May 7, 2018

      I do not use the Media Encoder.  It is dynamical linked (I believe via Ethernet) to Premiere.  I only use direct export from Premiere.  Early development of our PPBM we found that the dynamic link method was not a good benchmark-able test.  When we switched to direct export testing we found much more repeatable results

      Here is a software only export from Premiere showing 100% CPU usage

      This is one of the four tests in PPBM, the CPU intensive timeline export .  Here all four test results;

      "91","62","24","233", Premiere Version:, 12.1.1.10

      Exporting that same timeline which has many GPU accelerated effects and feature with my SC GTX 1060 6GB reduced that 233 seconds to 24 seconds.

      And yes,  the export device was a Samsung Portable T5 USB 3 SSD, why don't you run the PPBM benchmark


      Hi Bill Gehrke​

      Thank you for your detailed response.

      I ran your PPBM benchmark and focused on H264 (as that is my main codec) and was able to achieve 100% CPU load (Renderer set to Software Only) in both direct export from Premiere and queued via AME.

      I am not able to replicate the CPU load % on a basic single file conversion, either via Premiere or AME.

      The most I can get is 25%.

      The only difference I can see is that your benchmark session has many files, overlays and effects which may contribute to the load.

      But why doesn't my software use full load for even just a single file conversion?

      Either way i believe this remains an Adobe software issue.

      In regards to hardware; I am keen to get your thoughts on what you recommend to use as the fastest rendered.

      My CPU is i7 8700k @4.5Ghz

      My GPU is currently GTX770 (willing to upgrade)

      My hard drives will stay as they are for now (SSD Sata6 C: and WD Black 4Tb work/content drive).

      Regardless of my hard drives, would I be best using CPU rendering 'Software Only' as the renderer over say your SC GTX 1060 6GB GPU with CUDA renderer?

      Should I be using Software Only CPU or CUDA GPU (with a GPU upgrade)?

      I realise you can't give exact results on without the hardware handy but this is something I'd like to know as an estimate in your opinion before I go out and purchase a new GPU.

      Many thanks,

      Ben.

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