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Add new CPUs

Open zolez opened this issue 6 years ago • 3 comments

based on https://github.com/rigred/sandsifter

zolez avatar May 17 '18 08:05 zolez

Thanks for the submission.

I've noticed something strange in the logs, they seem to end far before the usual runs. 660f8fff000000 in both files as opposed to f3dfc7. This means your logs fall several thousand instructions short of the expected result.

What kernel did you test this with? I haven't yet checked for what effect spectre and meltdown mitigations have on sandsifter testing, but it may be the case here. Otherwise it might be system stability related, I have previously noted that certain overclocked systems fail to run sandsifter correctly.

-- Rigo

rigred avatar May 18 '18 12:05 rigred

For the time being I have pushed this to the evaluation_data branch.

rigred avatar May 18 '18 12:05 rigred

I'm using stable debian stretch with the current kernel updates: 4.9.0-6-amd64 #1 SMP Debian 4.9.88-1+deb9u1 (2018-05-07) x86_64 GNU/Linux. It's a minimal (main only) installation with default bios settings so there is no much space for instabilities here.

$ cat /proc/cpuinfo | grep bugs
bugs		: cpu_meltdown spectre_v1 spectre_v2

compiling with just a -no-pie flag based on the original repo: https://github.com/xoreaxeaxeax/sandsifter my sandsifter is crashing after 7min on 0fbafc0b later on 260fbaf405, 2e0fbaf407, 360fbaf406, ... (I will try to make a full list of this problematic instructions)

If you have any idea what is the reason of this misbehavior and how to workaround it I can correct my results. btw. soon I will upload 2more AMD cpus

zolez avatar May 18 '18 12:05 zolez