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[Phoronix] Segmentation Faults On Zen CPUs Under Heavy Workloads - Page 33

post #321 of 406
Doesn't seem to be an issue with ThreadRipper at least, I was compiling GCC (and others) for fun with -j32 and had no issues whatsover. Was fun to compare compile times vs my old Haswell workstation.
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post #322 of 406
Thread Starter 
Quote:
Originally Posted by kevinf View Post

Doesn't seem to be an issue with ThreadRipper at least, I was compiling GCC (and others) for fun with -j32 and had no issues whatsover. Was fun to compare compile times vs my old Haswell workstation.
AMD said as much, so thanks for the confirmation. If that 1920(-X) drops soon, I might just swallow the higher cost of the X399 motherboards and forego AM4 RyZen altogether.
post #323 of 406
Just built a ryzen rig, and my ryzen 5 1600 I bought from Fry's suffers from this bug. I can repro in ubuntu 17.04 and Arch. Already sent my CPU out to AMD for RMA, just waiting on the replacement now.
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post #324 of 406
Got my replacement chip today. It's a week 33.

The Ryzen killer script in Linux has been running for 30 min. without any segfaults. My old chip usually segfaulted multiple times within the first 5 minutes.

The AMD RMA experience has been very good for me. I'll be validating this chip over the next week. But the fact that it hasn't crashed in 30 min. on something that usually killed it in 2 min. is looking promising so far.

Looking forward to getting a fully working build box.
post #325 of 406
check whether theres any data corruption, seg faults can be bypassed by proper memory pointers, but data corruption can be silent.
post #326 of 406
My Windows test suite ran all the way through from start-to-finish in about 36 hours. Finished with no errors or crashes.

My old chip would error or segfault (crash) once every 1 - 3 hours.


Now I'm running a new version of the Windows tests as well as testing all the compilation work-loads that I intend to do. This time with the memory bumped up to 2666 MHz. I don't see any increase in memory overclockability with the new chip. And the box still refuses to post with the memory at 2800 MHz even with a higher SOC.

But overclocking this box is the last of my concerns at this point. At least it seems to work now.
post #327 of 406
My update, CPU I received is 1733SUS. No issues segfault wise. Had an odd little circle cut into one corners of the heat-spreader.

Need less voltage than my old one 3.75@ 1.16V vs 1.23V for my old one. Don't really have the cooling to try higher than that yet.

Whole process took just over three weeks. I'm in New Zealand though so 10 days of that was shipping.
Can't really fault AMD *groans*, I even told them (very politely) that I didn't want to test 1.365-1.42V because it was irrelevant to me if it worked that high over stock and they were fine with that and just made me test 1.1V SOC.
Edited by Spanners - 9/25/17 at 10:54pm
post #328 of 406
Standard OCN question - how does it OC (core/mem) biggrin.gif
post #329 of 406
Anyone RMA'd in the UK and can tell their experience of turnaround times etc?
post #330 of 406
Quote:
Originally Posted by Jaju123 View Post

Anyone RMA'd in the UK and can tell their experience of turnaround times etc?

I have. See my past posts recently in thread. Recently got an email that RMA approved, etc, waiting on return CPU, will chase up today.
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