Dual eGPU setup working on nMP + FCPX fix + Pictures via Instagram  

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nycjunglist
(@nycjunglist)
Active Member
Joined:11 months  ago
Posts: 6
June 2, 2017 12:56 pm  
Posted by: barefeats

I have dual eGPUs running on the 2016 MacBook Pro. However, when I hook the same two eGPUs to the 2013 Mac Pro (TB2 Bus 0 and 1), it won't boot up. It boots fine if I connect one eGPU at a time. 

What am I missing here?

BTW, I'm running the 1080 Ti in one eGPU and the 1080 in the other eGPU.

I'm having similar issues with my nMP as noted here: https://egpu.io/forums/mac-setup/two-egpus-nmp/

@imcalledandy What exactly did you do to get your machine to boot with both GPUs connected?


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imcalledandy
(@imcalledandy)
Estimable Member
Joined:1 year  ago
Posts: 124
June 2, 2017 5:52 pm  

@barefeats and @nycjunglist - Have you tried using -a mode?

I had to do that when I was experimenting with 3 x eGPUs with my nMP - 2 x Thunder 2 and 1 x Node.

I had mixed success and I believe I've tracked it down to the 1080Ti card being a Founder's Edition - the nMP doesn't seem to like those so I'll get a non-reference card and test the 3 x setup again - more on that here:  https://egpu.io/forums/mac-setup/can-you-mix-9-series-with-10-series/

Back to the point: try enabling -a mode in automate-eGPU and put your eGPUs onto different busses - i.e not bus 0. I found with my attempt at 3 x I had overcrowded Bus-0 as I had an HDMI connection running too.

BTW - I did get the Node and a Thunder 2 working

almost there

 

Edited: 11 months  ago

2013 MacPro 2xD700 2xGTX980Ti@16Gbps-TB2 (AKiTiO Thunder2) + macOS 10.13.3
2017 TB MBP 2xGTX180Ti-TB3 (Akitio Node) + macOS 10.13.3


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nycjunglist
(@nycjunglist)
Active Member
Joined:11 months  ago
Posts: 6
June 4, 2017 8:18 pm  

@imcalledandy Well, I gotta say, I think that worked!

I ended up reinstalling the script twice since I didn't uninstall the web drivers the first time. I let the script download them the second time which seems like it allowed the script to take care of some remaining tasks. After my first attempt, the cards were showing up as Nvidia Chip Model which I knew was wrong and led me to my second attempt. I have 1 card and 1 display in Bus 0 (ports 5 & 6), and the second card in Bus 1 (first port).

There's a post you left in that other thread where you mentioned you plugged in your display AFTER you booted up. I took a cue from that and left my monitor off during startup and everything worked as expected. I'm not 100% sure if this is one of the tricks needed, but I was initially having startup issues with my monitor on at boot and both devices connected. I now have my second monitor in Bus 2 (2nd port) — connected after login — and everything is up and running.

I need to see whether or not having the displays powered on at boot causes that to fail.

Screen Shot 2017 06 04 at 4.17.21 PM
Screen Shot 2017 06 04 at 3.46.38 PM

Edited: 11 months  ago

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Supaiku
(@supaiku)
Eminent Member
Joined:1 year  ago
Posts: 45
July 3, 2017 3:09 pm  

Just joining this thread as I am thinking about potentially setting up dual eGPUs on my 2013 iMac. I just recently got a GTX 980Ti to work with the Akitio Node. I'm not super hardware savvy and this talk about daisy chaining and risers and whatnot is kind of confusing to me. But based on what everyone has been testing here, do you guys think that 2 Akitio Nodes would work on my iMac? Also seems like I wouldn't necessarily need to get the same card. I use Octane in C4D pretty heavily and I am LOVING the boost I get with the single eGPU (soooo much faster than things were before just using the internal GTX 780M), so they thought of it being even faster with a 2nd eGPU is making my mouth water 🙂


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