PSPICE-FOR-TI: Dual processors usage

Part Number: PSPICE-FOR-TI

Does Pspice for TI benefit from dual CPU (Remarks, not dual core, physically Dual CPU)

My syetem have dual CPU but I found the second CPU seem not in use, while the first CPU are not full load either.

The simulation itself does progress slowly.

How can I optimize the setting on my system?

The top 16 boxes is the first CPU(8core with hyperthread), the bottom 16 boxes is from another CPU