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I am using Memtest v8.4 free with a Ryzen 5 3600 6-core CPU system.
During some previuos test a year ago or so it used to use SMT (i.e. run tests on 12 threads) by default.
Now, the same exact image on the same exact flash drive does not use SMT (6 CPUS working, 6 CPUs disabled). Thus, it is not the case on the hyperthreads not being used by default in the newer versions of Memtest86.
I've tested the flash drive on a different Ryzen system, also 6 core/12 thread, and got 12 CPUs running with Memtest86 by default.
On the machine of interest, SMT is enabled, other CPU settings are auto, in linux 12 threads are active, and yet Memtest only uses physical cores - on that specific machine. The machine exhibited some suspicious behaviour, but the memory tests are clean. The only weird part is Memtest's CPU selection.
I wonder if this indicates some problem with the CPU. Any ideas?
Please delete the previous (shorter) post. Thank you.
During some previuos test a year ago or so it used to use SMT (i.e. run tests on 12 threads) by default.
Now, the same exact image on the same exact flash drive does not use SMT (6 CPUS working, 6 CPUs disabled). Thus, it is not the case on the hyperthreads not being used by default in the newer versions of Memtest86.
I've tested the flash drive on a different Ryzen system, also 6 core/12 thread, and got 12 CPUs running with Memtest86 by default.
On the machine of interest, SMT is enabled, other CPU settings are auto, in linux 12 threads are active, and yet Memtest only uses physical cores - on that specific machine. The machine exhibited some suspicious behaviour, but the memory tests are clean. The only weird part is Memtest's CPU selection.
I wonder if this indicates some problem with the CPU. Any ideas?
Please delete the previous (shorter) post. Thank you.
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