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/proc/cpuinfo shows 8 CPUs, but MOSIX claims that there are only 4
There are in fact only 4 real cores per node -
the extra cores shown in /proc/cpuinfo reflect Hyper-Threading.
You can tell that Hyper-Threading is enabled by the "ht" flag
in the "flags" field of /proc/cpuinfo.
Hyper-Threading may help some threaded applications, such as
browsers, but may slow down compute intensive applications.