Threadripper 2970WX AVX Issues

Hi All,

I have spent the last couple of days now trying to track down and fix a random system hang with my 2970WX system. Tests like memtest86 show I have no RAM issues and to be sure it’s not an OC issue, I am running at stock clocks.

Can anyone here please confirm that mprime 64-bit for linux (from https://www.mersenne.org/download/) doesn’t eventually crash out on the default torture test with a segfault (only takes about 10 minutes) on the Zen+ platform?

Attaching gdb to the task I can see the fault occurs when calling __memmove_avx_unaligned_erms.

Ohh yes. The old infinity fabric thing.

I think this is resolved upping your soc voltage just .05v

That might possibly be my fault for running it right on the edge :rofl: but it should be able to do 2933 memory no problem. More than that is pushing it I think.

I tried this, made no difference and I am still seeing it at the default 2666 RAM clock.

latest board bios/agesa? mighjt be worth rolling back to the prior agesa

Yup, and tried rolling back too :frowning:
Perhaps gigabyte can be poke to produce an updated BIOS with the latest AGESA…

this type of thing can also often be weird edge cases with different memory kits. even though it’s low speed there have been several threads on the forum where more voltage = longer between memory errors (but eventually errors) and less voltage = sooner memory errors but neither thing was right.

there is also some things like you want the input voltage to be higher than soc voltage, always, or vdd to be less than soc, and that kind of thing?

Yeah, I have done a lot of reading on the subject and have kept things sane in the voltage department. I am not getting memory errors, but segfaults on AVX transfers. I suspect either the x399 Aorus 7 is not up to the task of providing stable voltages under high loads to this CPU, or, the CPU has an issue.

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