insufficient Capture Peformance Decklink Quad2 on AMD EPYC

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nitrat7

  • Posts: 2
  • Joined: Thu Nov 12, 2020 7:43 pm
  • Real Name: Martin Grohme

insufficient Capture Peformance Decklink Quad2 on AMD EPYC

PostThu Nov 12, 2020 9:38 pm

Dear Support,

We see insufficient Capture Peformance Decklink Quad2 on AMD EPYC.

Hardware:
Hewlett Packard HP DL385Gen10 Plus with 2 x AMD EPYC 7F2.
Reported ChipSet: Advanced Micro Devices, Inc. [AMD] Starship/Matisse

Software:
Issues on either Ubuntu 20.04 LTS or CentOS 7.6
Decklink SDI 11.6 /and SDK.

Setup:
Decklink Quad2 with 8x 3G SDI Input 1080P59.94

Capture ONE 3G SDI shows expected Framerate 59.94 afps

Capture EIGHT 3G SDI shows Framerate < 50 fps, though CPU-Performance is <10% (only Capture to /dev/zero)
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nitrat7

  • Posts: 2
  • Joined: Thu Nov 12, 2020 7:43 pm
  • Real Name: Martin Grohme

Re: insufficient Capture Peformance Decklink Quad2 on AMD EP

PostSat Nov 14, 2020 12:52 pm

Also tried newest Version 11.7

also tried different PCIe-Slots on different Risers

also tried different BIOS-Settings, limiting to PCIe 3/2 (as AMD supports 4)

but no luck :-(

That's a pity - such a powerful Server, incapable using with Blackmagic Video-Capture ...
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VennStone

  • Posts: 35
  • Joined: Sun Sep 29, 2019 6:50 pm
  • Location: Athens
  • Real Name: Ven Stone

Re: insufficient Capture Peformance Decklink Quad2 on AMD EP

PostThu Nov 19, 2020 1:54 am

I don't know about EPYC but Blackmagic is aware of issues with the Decklink Quad and 1'st gen Threadripper. They were able to confirm it on their end.

That support ticket is still open, six months later.
Debian 9 / 10
Threadripper 1920X
NVIDIA 2060
Intensity Pro
Intensity Pro 4K
DeckLink Mini Recorder 4K
DeckLink Quad HDMI <- WARNING: Does not work with Threadripper.

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