Reply To: setting thread number for cortical surface extration November 14, 2016 at 5:12 am #579 wstaeParticipant I’am sorry, my iMAC has physical 4 cores. When I ran cortical extraction in my new Centos 7 workstation (Xeon dual CPU 24 physical cores), cortical extraction used only one core. Can I increased the core number up t0 24?