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#1 |
Feb 2020
2 Posts |
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I'm getting errors during a PRP test.
Running the CPU at stock settings. This is only happening on cores 1-4. Cores 5-8 have no errors. Any ideas as to what is going on or how to fix? Text from Prime95 below. Thank you. Version: Windows64,Prime95,v29.8,build 6 [Main thread Feb 15 10:36] Mersenne number primality test program version 29.8 [Main thread Feb 15 10:36] Optimizing for CPU architecture: AMD Zen, L2 cache size: 8x512 KB, L3 cache size: 2x8 MB [Main thread Feb 15 10:36] Starting workers. [Main thread Feb 15 10:36] Waiting 62 seconds for boot to complete. [Feb 15 10:37] Worker starting [Feb 15 10:37] Setting affinity to run worker on CPU core #1 [Feb 15 10:37] Setting affinity to run helper thread 1 on CPU core #2 [Feb 15 10:37] Setting affinity to run helper thread 2 on CPU core #3 [Feb 15 10:37] Setting affinity to run helper thread 3 on CPU core #4 [Feb 15 10:37] Resuming Gerbicz error-checking PRP test of M107880287 using FMA3 FFT length 5760K, Pass1=768, Pass2=7680, clm=4, 4 threads [Feb 15 10:37] Iteration: 67981074 / 107880287 [63.01%]. [Feb 15 10:37] Hardware errors have occurred during the test! [Feb 15 10:37] 2 Gerbicz/double-check errors. [Feb 15 10:37] Confidence in final result is excellent. |
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#2 |
∂2ω=0
Sep 2002
República de California
3×53×73 Posts |
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Looks like the program detected the GEC errors, retried starting from the last-good-GEC-check checkpoint file, and successfully got past the problematic iteration interval on the 2nd attempt. So no worries.
Just curious - what exponent are you running on cores 5-8? And are you seeing thermals-related system messages for cores 1-4 but not 5-8? ('sudo dmesg' under Linux). |
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#3 |
Feb 2020
102 Posts |
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Thanks for the help.
Running 107,880,361 on cores 5-8. I'm using Windows 10, not Linux but the CPU is running at about 60C. I don't have (or can't find) per-core temperatures. Thanks again! |
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#4 | |
"TF79LL86GIMPS96gpu17"
Mar 2017
US midwest
7·701 Posts |
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https://www.mersenneforum.org/showpo...74&postcount=6 This wasn't really a PrimeNet topic. It's hardware or prime95. There are subforums and threads for those. Last fiddled with by kriesel on 2020-02-20 at 20:20 |
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#5 |
Sep 2002
Database er0rr
23×449 Posts |
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Temperatures are the first things to check.
Next would be RAM. Run memtest86+ and choose memory stress test of Prime95. Having 2 errors on one test does not imply the other test is not suscepitable to errors. The RAM might need a tweak in timing and/or voltage -- it might even be overheating. |
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