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Author Topic: Anyone with cMP and Titan-Xp or 1080Ti and power issues?  (Read 2638 times)
Rominator
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« on: April 13, 2017, 11:24:38 PM »

Looks like a power draw issue.

Who else has this combo?
« Last Edit: May 16, 2017, 12:18:32 AM by Rominator » Logged

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Spacedust
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« Reply #1 on: April 14, 2017, 10:06:45 AM »

When it happens? Right on boot or under load?

The TDP should be 250W just like the rest of the cards.
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Rominator
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« Reply #2 on: April 14, 2017, 07:19:31 PM »

Oddly I can complete Valley at 5K but it is CUDA-Z that will kill 4,1.

When I hit "Heavy Lode Mode" within 3 seconds it shuts down. I do see 14 Tflops right before
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Rominator
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« Reply #3 on: April 14, 2017, 10:44:30 PM »

And it seems first Titan-X Pascal has same issue, at least on 12 Core

1080Ti may be the sweet spot
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Spacedust
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« Reply #4 on: April 15, 2017, 10:49:01 PM »

I just tested my GTX Titan X (Maxwell) in 4K on max. details in GTA V and just 2x 6-pin power connector. In my previous configuration with Areca ARC-1882IX-12 RAID card it was shutting down right after 3 seconds.

Now without it all works perfectly fine. Maybe something else is causing this issue with Pascal Titan X and Xp?

I would suggest removing all unecesarry PCI-Express cards and drives and if this won't help replace the CPU's with two X5675's.

There might be also some thermal sensor which is cutting down the power to prevent hardware damage.
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Rominator
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« Reply #5 on: April 16, 2017, 07:25:30 AM »

2 or 3 people have confirmed on my blog
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Spacedust
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« Reply #6 on: April 16, 2017, 08:22:45 PM »

2 or 3 people have confirmed on my blog

I've asked them about the rest of the config. Just tested my GTX Titan X in heavy load mode and 2x6-pin power - no issues at all. This test does not make any load on the CPU's.
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Squishy Tia
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« Reply #7 on: April 17, 2017, 04:21:36 AM »

2 or 3 people have confirmed on my blog

I've asked them about the rest of the config. Just tested my GTX Titan X in heavy load mode and 2x6-pin power - no issues at all. This test does not make any load on the CPU's.

CUDA-Z doesn't insta-lock the system and shut it down in Heavy Load mode?

Edit: I just ran CUDA-Z with my GTX 780 while on the 378 Pascal drivers. CUDA-Z is showing the driver version as 10.16.34 (355.10.05.35f05) instead of what the nvidia control panel says is loaded (378.05.05.05f01). So either nVidia's control panel is lying or CUDA-Z needs to be updated to check/see web drivers on OS X. Also, in my case, CUDA-Z does not increase its numbers under heavy load. They remain identical to non-heavy load mode. So it looks like at this point, at least in OS X, CUDA-Z's results are suspect at best.
« Last Edit: April 17, 2017, 04:33:19 AM by Squishy Tia » Logged
lowrider
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« Reply #8 on: April 17, 2017, 05:33:13 AM »

^^^^The Cuda-Z issue is a cosmetic one and has been posted and talked about many times.  Cuda-Z has always reported the Apple Driver whether it's loaded or not.  The author's have never corrected the issue.  If the Nvidia CP and the Cuda CP say the Web Driver is running, it is!

Lou
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Synchro03andsoon
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« Reply #9 on: April 17, 2017, 12:47:57 PM »

I've asked them about the rest of the config. Just tested my GTX Titan X in heavy load mode and 2x6-pin power - no issues at all. This test does not make any load on the CPU's.

Because you are running a GTX Titan X (= Maxwell), which never caused power issues.

GTX Titan X = Maxwell
Titan X = first generation Pascal
Titan Xp = second generation Pascal
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Spacedust
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« Reply #10 on: April 17, 2017, 06:43:34 PM »

GTX Titan X = Maxwell
Titan X = first generation Pascal
Titan Xp = second generation Pascal

I know, but it was previously shutting down in 4K after just loading GTA V story mode when used with 2x 6-pin and Areca card. Sadly I don't have Titan X or Titan Xp to test.
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Spacedust
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« Reply #11 on: April 17, 2017, 10:26:49 PM »

The first guy confirmed he's got 2x X5690's. Any one with 2x X5675's?
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Rominator
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« Reply #12 on: May 16, 2017, 12:25:02 AM »

Hey, so Barefeats has confirmed the power issue with 1080Ti of Titan X Pascal.

Can easily be triggered by CUDA-Z and "Heavy Load Test Mode". The Titan-X will most times click the comp[uter off within 3 seconds of this button being hit. The 1080Ti can trigger within 5-120 seconds, but most eventually will. I have found 1 or 2 "golden" cards that are fine. But they are like 1/10 or so.

The weird thing is that if you use HWMonitor and watch the power draw, the numbers are LOWER than when a Maxwell Titan-X is running, yet BANG off goes the computer.

So there must be spikes that draw past the desired or allowed current. And it is asymmetrical, one side drawing 40-60 Watts, the other 80 or so.

As much as I would like to say it is only using this synthetic benchmark triggering it, I have had a customer contact me about power issue with 1080Ti running UT.

I got ahold of the EVGA Powerlink to blend the two outputs. Still triggers the computer off. A SATA adapter seems best answer.

Anyone else want to chime in? Will need to get a consensus on this soon.

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netkas
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« Reply #13 on: May 16, 2017, 08:55:42 AM »

slightly different story, still about pascal
I have 1080 in egpu setup, egpu fully powered by 550W psu.
Still it crashes under heavy load (like unigine superposition)
could be these power spikes on pcie slot.

Maybe whole pascal family isnt ideal on this.
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Squishy Tia
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« Reply #14 on: May 16, 2017, 11:35:32 AM »

So right now it's looking like, at least in Mac setups, the draw off of the main PCIe bus is exceeding 75W by a large enough margin to crash or even shut down the computer, yes? That sounds an awful lot like the problem that the AMD Polaris 480 line had not too long ago. Sad
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