MP 7,1 Mac Pro 2019 8 or 16core??

[Seffs]

So I decided to do a test on the Mac
And found out it says it detected 16cores but uses 8...

could they be blocked?

Any suggestions?!

 

[cobra521]

Seffs,

Opaque result. What kind of test was run? What software? What hardware?

Tom

 

[Seffs]

Hey Tom,

It’s the Mac Pro 2019
8 core 3.5
256gb ddr4 ram

and app test it’s memtest86

 

[cobra521]

Seffs,

I think your result is normal. I ran memtest86 on my 28 core 7,1 and got:

CPUs found: 56
CPUs started: 28 CPUs active: 28

For some reason (I'm certain others can explain this, I don't know the answer) the number of CPUs doubles under some odd way of counting.

Tom

 

[gallico916]

Its cors and threads, each core have 2 threads

 

[Seffs]

Seffs,

I think your result is normal. I ran memtest86 on my 28 core 7,1 and got:

CPUs found: 56
CPUs started: 28 CPUs active: 28

For some reason (I'm certain others can explain this, I don't know the answer) the number of CPUs doubles under some odd way of counting.

Tom

Hey Tom

thanks for checking!!

 

[timerickson]

Your 8-core CPU has 2 threads per core, for 16 available "CPUs" in the way this tool is listing it.

 

[Seffs]

Thanks but did yo get the results of Tom above? In his case 56core

 

[blackadde]

It says 56 CPUs because he has a 28 core CPU with hyperthreading (28 cores * 2 threads = 56 'CPUs').

I'm sure your system is fine. Memtest86 probably just doesn't use SMT (simultaneous multithreading) or you have it disabled in the settings somehow.

 

[Seffs]

Ok! Thanks for the message!