## F.2 Parallel Library Routines (TU*X only)

Compaq Fortran provides library routines you can use for directed parallel decomposition (when specifying the `-mp` and `-omp` compiler options) on Tru64 UNIX systems:

- Routines using the OpenMP Fortran API format (Section F.2.1)
- Equivalent routines using a format compatible with existing programs (Section F.2.2)

When writing new programs that call the run-time parallel library routines, use the OpenMP Fortran API format.

For a helpful program interface, you should add the following statement to the program unit containing the parallel routines:

      INCLUDE '/usr/include/forompdef.f'

For more information on a specific routine, see the appropriate reference page; for example, for more information on omp_set_lock, see omp_set_lock(3f).

For More Information:

- On parallel routines, see your user manual.
- On parallel directives, see Section 15.2.

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