Xeon Phi x200 - 10 cores are offline. Bad CPU or BIOS config problem?

Hi everyone,

I am testing out the Ninja DAP platform with Intel Xeon Phi 7210 64-core MIC processor.  After configuring CentOS 7.3, I ran "lscpu" command.  Results of the command show that 10 physical cores (40 HT cores) are offline!  My processor only shows up as 54-core CPU instead of a 64-core CPU.

Did I receive a bad Phi chip?  Or is there anything I need to modify in the SuperMicro K1SPE motherboard BIOS?  My current BIOS settings are quadrant mode, flat memory, all ACPI power statues enabled (P, S, T).

Thank you!