I received a replacement rx3600 and noticed at the EFI prompt, the # of Logical CPUs was 2 instead of 4 as on my previous rx3600.
I scoured the net and found the following procedure:
https://support.hpe.com/hpsc/doc/public ... -c01060323
After running procedure no luck. Same # of logical CPUs.
I did notice that after running the procedure as follows, the # of Logical CPUs went from 2 to 4.
Shell> cpuconfig
Shell> cpuconfig threads on
Shell> reset
When system comes back up and go back into the shell, # of Logical CPUs is 4. This is in direct conflict with the link above.
The link above indicates that through
Shell> cpuconfig threads off
The # of logical CPUs increases to 4. Confusing.
But now you know.
Hyper-Threading-# of Logical CPUs-Proc Error
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Re: Hyper-Threading-# of Logical CPUs-Proc Error
I think the HP support page has the console screenshots for the two cases swapped. If hyperthreading is turned on, each physical core counts as 2 logical CPUs, so with 2 cores you have 4 logicals CPUs. If hyperthreading is turned off, each physical core counts as 1 logical CPU.
There is something wrong with everything that is popular.
(Charles Fort)
(Charles Fort)
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Re: Hyper-Threading-# of Logical CPUs-Proc Error
Also note that for most OpenVMS applications running with hyperthreading on will give no performance gain and may giving worse performance
Ian Miller
[ personal opinion only. usual disclaimers apply. Do not taunt happy fun ball ].
[ personal opinion only. usual disclaimers apply. Do not taunt happy fun ball ].