Dell PowerEdge C8220 Build and Questions

jverschoor

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Mar 12, 2021
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Hi Falanger,

We are also seeking to connect a NVIDIA K80 to a C6220ii, and are following your helpful lead.

Question: I see on your monitor screen that your BIOS shows the option ["edge slot" <enabled>] under "PCI configuration". Was this "edge slot"- option visible already before you connected a GPU card, or did this option only become visible in the BIOS after you connected the GPU card to the edge slot?

If you could please let me know.

Many thanks, JJ


PS. For those interested I share the C6220ii Mobo block diagram, that Dell shared with me some years ago.
 

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falanger

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Jan 30, 2018
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Question: I see on your monitor screen that your BIOS shows the option ["edge slot" <enabled>] under "PCI configuration". Was this "edge slot"- option visible already before you connected a GPU card, or did this option only become visible in the BIOS after you connected the GPU card to the edge slot?
The Edge slot option is visible after connecting an additional +12 V power supply and a card to the GPGPU riser. Without an installed card, the slot is not detected. And the system only sees 2 GPU cards 16x. The third - no, but she sees the 4x SSD card. On 3 16x cards, the system lacks signal lines.
 
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jverschoor

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Mar 12, 2021
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The Edge slot option is visible after connecting an additional +12 V power supply and a card to the GPGPU riser. Without an installed card, the slot is not detected. And the system only sees 2 GPU cards 16x. The third - no, but she sees the 4x SSD card. On 3 16x cards, the system lacks signal lines.
Thanks for you reply Falanger; very helpful.

I have one follow-up question if you don't mind: You say " The Edge slot option is visible after connecting an additional +12 V power supply...".

Question: where did you connect this additional 12V power supply to?

Is it to connector 23 "power connector interposer"? (as highlighted in yellow in the picture attached.... as I see in your videos that you have indeed connected a power cable to this 4 pin connector, but I don't know what this connector powers).

See, we have 4 C6220ii nodes in a C6000 chassis and the 4 nodes get their power supply from the so-called "middle plane" to the rear. (So we don't use power connector 1 (the main one) nor power connector 2 (the small 4-pin one)).

This leaves me wondering whether we need to hook up an additional power supply to power connector 2 in order for the K80 to show up when connected to the edge slot (the rear interposer PCIe slot)..... (as maybe that 4-pin power connector 2 supplies the 75W to that PCIe slot (the 225W to the 8 pin power connector on the K80 we will supply separately)).

I would appreciate if you could share you thinking.

Kind regards, JJ
 

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falanger

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Jan 30, 2018
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On GPU risers from Dell servers such as yours, on boards with a 16x slot nearby, there is a 4-pin + 12V power connector that feeds it directly to the card.
4-pin connector on the GPU riser board - supplies + 12V power directly to this 16x slot. In order not to load the power lines of the board and not to damage it.
A small 4-pin connector near the memory slots supplies + 12V power to the board to ensure its operation if powerful processors and a lot of memory modules are installed, more than half of the total.
The purpose of the power pins of the connectors is on the forum, it does not coincide on the board and risers. Themselves such connectors are sold on eBay.
 

falanger

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Faced a problem, my Dell C6220 II board cannot turn on RTX 3060 12gb, older cards are working. Who faced and solved this problem?
 

falanger

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By experience I found that GT 710, 730, 1030, 1080, HD 6450 work on my 6220 board. But GTX 1650 and 3060 do not.
 

jverschoor

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Mar 12, 2021
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Which PCIe slot did you try the RTX 3060 on?: One of the front two PCIe slots, or the rear edge slot via the GPGPU riser?

Actually, either way, I wont know the answer. But the board was designed to work with the older Nvidia Tesla/Intel Phi cards.... so maybe only the older Fermi/Kepler architectures are supported, whilst the newer Pascal and Ampere architectures (employed by GTX and RTX series respectively) are not? (I don't know about Radeon)
 

falanger

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Empirically, I installed a video card in the store by sticking it into the card that it works with GTX 710, 730, 1030, GTX 1060, 1070. But with GTX 1650, RTX 2060 and 3060 - no. Keep this in mind when assembling your workstation.
 

jverschoor

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Mar 12, 2021
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Ok thanks, I will keep that in mind.... and within that regard, did you actually ever manage to run a K80 on the rear edge slot GPGPU riser? you told me about the overall PCIe lane limitation (that prevents running 3 GPU's), but did you ever manage to get a single K80 to run on the rear edge slot GPGPU riser?

Kind regards, JJ
 

yourepicfailure

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Jul 23, 2019
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My Dell has no problem with a Gigabyte RTX2080 Super:
rtxworks.png
I am actually using it right now to type this message. It is currently the primary display adapter.
works.png

EDIT: In fact, at one point I had both the 2080 Super AND an Asus Rog 2080TI 11G installed.
 
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jverschoor

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Mar 12, 2021
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Hi, ok, that is promising, but did you install those GPU's in the front 2 PCIe ports or did you use the powered riser on the rear edge slot to connect one of the GPU's?
 

jverschoor

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Mar 12, 2021
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Ok, thanks for letting me know.
This weekend I will try to connect a K80 to the rear GPGPU slot via the riser ribbon cable and I will post back as to whether that works or not, as I believe it didn't work for Falanger, but Drabadue managed to get a GTX 780 to function on the rear GPGPU slot, and the K80 is nearly the same architecture as the GTX 780.... so I am hoping it will work.

Kind regards, JJ
 

jverschoor

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Mar 12, 2021
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Just in case anybody has any networking issues with the onboard NICs, please note that Dell has finally (29 March 2021) updated their firmware to version 20.0.16:

You can download it here: https://dl.dell.com/FOLDER07032145M/3/Network_Firmware_23WP1_WN64_20.0.16_A00.EXE
release notes here: https://dl.dell.com/FOLDER07032138M/1/fw_release.txt

Note: the executable works on Windows only but, its just a self-extracting archive of some repackaged intel firmware, that you can also manually extract using commands like this: "Network_Firmware_23WP1_WN64_20.0.16_A00.EXE /s /e=C:\MakeATempDirectory", and then you can use the embedded intel firmware updater in that directory like this: "fitw64e.exe -u -l -c fit.cfg" from an elevated command prompt (you may need to hack the fit.cfg and package.xml to match your NIC's, but do so carefully as we bricked a mobo by trying to crossflash the "i350 LOM" (for which there was no firmware update) to "i350-t LOM" (for which there was a firmware update)).