icpc  -openmp -mkl  dgemm.cc 

n has to b >= 2048 to kick start auto offload of MKL
intel/15.0 not working

Offload: MKL_MIC_ENABLE=1 OFFLOAD_REPORT=2 ./a.out

CPU only: MKL_MIC_ENABLE=0 OFFLOAD_REPORT=2 ./a.out

