How to measure the performance with single thread? #40

I installed Caffe-HRT as the installation guide. I want to measure the performace on cpu under single thread. I use top -H to monintor the threads used in Caffe-HRT and aat least four threads are running (as shown below).

27552 nvidia 20 0 518140 367044 31416 R 99.0 4.6 0:14.95 caffe
27554 nvidia 20 0 518140 367044 31416 S 23.0 4.6 0:03.25 caffe
27555 nvidia 20 0 518140 367044 31416 S 23.0 4.6 0:03.22 caffe
27556 nvidia 20 0 518140 367044 31416 S 22.4 4.6 0:03.18 caffe
1531 nvidia 20 0 861396 127112 69564 S 1.3 1.6 212:50.70 compiz

So I want to know how to control the threads used by Caffe-HRT.