phillips> /usr/local/intel/bin/ifort ex1_1.f90 -openmp -fpp -i_dynamic
ex1_1.f90(14) : (col. 6) remark: OpenMP DEFINED REGION WAS PARALLELIZED.

phillips> a.out
 Hello from main thread
 Hello from thread            0
 Hello from thread            1
 Hello from thread            2
 Hello from thread            3
 back to sequential world