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Server Gurus Discussions

l4yon14y
Journeyman III
‎02-07-2023 08:04 AM

Epyc 7513 wrong number of threads detected

Hi all,

in our latest server with 2 x Epyc 7513, Ubuntu 18.04, and Kernel 5.4.0, the system correctly detects 64 total cores, but only 64 threads (instead of 128). In our older servers with 2 x Epyc 7452, everything works fine, and 128 threads are detected.

Does anybody know how to solve this issue?

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1 Reply
santosh_zanjurne
Staff
Staff
‎02-07-2023 11:30 PM

Hi,

lscpu command will show you if SMT is enabled or not - "Thread(s) per core: 1".  If threads per core is 1 then you can enable it in BIOS settings.

 

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