Using NOWAIT

C$OMP PARALLEL

C$OMP DO SCHEDULE(STATIC)

do i=1,n

a(i)=...

enddo

C$OMP END DO NOWAIT

C$OMP DO SCHEDULE(STATIC)

do i=1,n

b(i)=a(i)**2

enddo

C$OMP END PARALLEL

• Assume 2 threads

• With STATIC schedule

  • 1st thread: 1 to n/2
  • 2nd thread: n/2+1 to n
  • Same for second loop

• Dynamic schedule

  • No guarantee on which thread executes iterations

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