Synchronization Constructs
BARRIER Directive

• The BARRIER directive synchronizes all threads in the team.

• When a BARRIER directive is reached, a thread will wait at that point until all other threads have reached that barrier. All threads then resume executing in parallel the code that follows the barrier.

Format:

Fortran	!$OMP BARRIER
C/C++	#pragma omp barrier newline

Restrictions:

• All threads in a team (or none) must execute the BARRIER region.

• The sequence of work-sharing regions and barrier regions encountered must be the same for every thread in a team.