Object Detection - Haar Cascade / LBP Cascade - Software - cv_traincascade.exe - CPU Utilisation

The opencv_traincascade.exe program that is used to train Haar/LBP cascade classifiers for object detection;

I see that it only uses all available processors/cores for a small (in comparision to the rest) duration of time. Most of the time it uses onlty 1 processor/core.

Is there anyway it can be made to use all/more avilable processors all/more of the time ?.