3DL: i-7 CPU stays in ‘turbo’ & will crash

Tynkere

I think I know answer, but figured I’d ask.

If I have an i-7 (6700k) machine from 2015 that was meant for gaming/streaming...

A 3DL render will send it into ‘turbo’ mode at 4.16Ghz.  I don’t think this cpu was meant for sustained activity above 4Ghz.  Probably overheats, or voltage issue & bios tells Windows 10 to kill offending process.

Replicated at 5 minute 20 seconds mark.  It does the same thing in Poser11 / Superfly render.

System bios on a gigabyte g3 mobo has an option to disable turbo mode, but am surprised it's not grayed out.  Disabling ‘turbo’ ---> fails POST and endless loop.  Had to reset cmos.

So... any options here?  If a test in poser crashes, assuming Blender would do same?  A script for DS to actually tell stupid CPU to *slow down* or if it’s in bios forget it. 

Any hints, tips, suggestions welcome.  Very disappointing to spend time learning only the tip of the iceberg about 3DL only to find might not be able to take advantage of some of its “NPR” capabilities.

Thanks for reading

--Bruce

 

mikael-aronsson

Do you have power supply and fans that are good enough ? it sounds like overheating issues, install some software (SpeedFan for example) that allow you to have a peek at the temperatures and see what is going on.

Consumer PC's are not made to run CPU/GPU at 100% for very long time anyway.

You can try to change the CPU affinity for DS in the task manager and see if that makes any difference.

It sound a bit wonky if you cannot disable turbo mode, check if there are any BIOS updates or something available, it should work just fine.

SixDs

Since Windows is a "one size fits all' OS, it is the same for both laptops and desktops. That means that some OS features designed to primarily benefit laptop users are also still available for desktop use, one being the power management features. The latter can be used to limit the turbo boost feature indirectly, as follows:

1. Open Control Panel
2. Click on Power Options
3. Click on "Change plan settings" for your current plan
4. Click on "Change advanced power settings" (this will open the Power Options popup)
5. Expand the Processor power management section
6. Expand the Maximum processor state, and change it to something other than 100%. Try 99% to begin and then test the result to see if that solves the problem - don't crank it! Baby steps.
7. Click OK.

(I would agree with mikael, however. There is no good reason I can think of why disabling that feature in your BIOS should render the system unbootable, unless it is an issue with the turbo boost driver when it tries to load - but that's a pretty wild guess)

Tynkere

SixDs said:

Since Windows is a "one size fits all' OS, it is the same for both laptops and desktops. That means that some OS features designed to primarily benefit laptop users are also still available for desktop use, one being the power management features. The latter can be used to limit the turbo boost feature indirectly, as follows:

1. Open Control Panel
2. Click on Power Options
3. Click on "Change plan settings" for your current plan
4. Click on "Change advanced power settings" (this will open the Power Options popup)
5. Expand the Processor power management section
6. Expand the Maximum processor state, and change it to something other than 100%. Try 99% to begin and then test the result to see if that solves the problem - don't crank it! Baby steps.
7. Click OK.

(I would agree with mikael, however. There is no good reason I can think of why disabling that feature in your BIOS should render the system unbootable, unless it is an issue with the turbo boost driver when it tries to load - but that's a pretty wild guess)

I can’t thank you enough for that workaround.  They should make it a stickie or something!

My UI wasn’t exactly the same, but the critical entry might be % and also the speed is in MHz so * 1,000.

A ‘cap’ of 75% (on my system at least) has system stable in Poser-11 firefly & superfly renders.  DS 4.10 is stable in IRay and 3DL.

It’s like system is  idle!  

Other than annoying UI that will not allow end-user to minimize DS, aging desktop can now run Photoshop 10 and CS-3 ‘Pagemaker’ (or whatever they started calling it) while DS or Poser renders in background!

So increase workflow, and less stress on what was probably Tjunction Max (ThermTrip#?) & CPU fan ---> greater system longevity.  (Next upgrade isn’t budgeted until  2020.)

That’s some pretty good advice!  Thank you again.

--Bruce

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Edit: weeding out old imgur files.  PM broken links.