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suaefar / ryzen-test

Tools to reproduce randomly crashing processes under load on AMD Ryzen processors on Linux
GNU General Public License v3.0
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Is this still valid? #24

Open jstarcher opened 6 years ago

jstarcher commented 6 years ago

I'm wondering if any can confirm if this is still a valid test? I downloaded 17.04 and ran the tests as described and can't make it more than 200 seconds running all stock settings. I'm on a week 43 Ryzen 1700 and I can't seem to make anything else fail. 8hrs of Prime95, 8hrs of Memtest86, etc.

I've played with the DRAM voltage as well as SoC voltage and it didn't have any affect. One thing I noticed was that my integrated wifi adapter would throw a message in syslog and as soon as that happened this kill ryzen script would fail. I disabled the wifi adapter in bios and that allowed it to run longer which makes me wonder if this script fails on false positives?

doug65536 commented 1 year ago

If you have this problem today, you can disable the uop cache in AMD CBS settings in your BIOS (UEFI settings). uop as in micro-op, as in mu-op (μop). It hardly reduces performance if you disable it, but it completely fixes this issue. The code has to be tons of huge instructions to even be able to measure a difference in performance. The instruction decoder is so good, you hardly even need the uop cache. I didn't see "uop" mentioned in this thread, hopefully this isn't redundant.