This summarizes the solution to my issue.
The culprit was indeed in @jishnub tip:
For me, I have an LSF cluster, and the appropriate way to find the CPU of the nodes is to run
lshosts -w
This shows that many CPUs are Intel_Skylake, but does not reveal the full details of the CPU.
Setting in .bashrc
export JULIA_CPU_TARGET="generic;skylake,clone_all;icelake-server,clone_all"
solved the issue.
Let me also mention that for the LSF cluster, one can submit the job to run only on nodes with a specific CPU. I used when I run bsub this option
-R select [model=Intel_Skylake]
Thanks, Everyone!