I collected VTune general exploration on Intel Xeon Phi - KNC. I expected to see data in the column for vectorization usage. Instead this column is zero. My program includes a call to mkl - dgemm with aligned matrices - so I am sure vector instructions are called. How come VTune shows zero for vectorization usage - I understood KNX is prone to over count vector instructions, not undercount? I tried to attach a screenshot, but the 653KB files seems too large for this web interface. If you give me an email address I can email it to you.