OpenMP Directives: Clauses/Directives Summary
The table below summarizes which clauses are accepted by which OpenMP directives.
| Clause | Directive | |||||
|---|---|---|---|---|---|---|
| PARALLEL | DO/for | SECTIONS | SINGLE | PARALLEL DO/for |
PARALLEL SECTIONS |
|
| IF | ♦ | ♦ | ♦ | |||
| PRIVATE | ♦ | ♦ | ♦ | ♦ | ♦ | ♦ |
| SHARED | ♦ | ♦ | ♦ | ♦ | ||
| DEFAULT | ♦ | ♦ | ♦ | |||
| FIRSTPRIVATE | ♦ | ♦ | ♦ | ♦ | ♦ | ♦ |
| LASTPRIVATE | ♦ | ♦ | ♦ | ♦ | ||
| REDUCTION | ♦ | ♦ | ♦ | ♦ | ♦ | |
| COPYIN | ♦ | ♦ | ♦ | |||
| COPYPRIVATE | ♦ | |||||
| SCHEDULE | ♦ | ♦ | ||||
| ORDERED | ♦ | ♦ | ||||
| NOWAIT | ♦ | ♦ | ♦ | |||
The following OpenMP directives do not accept clauses:
- MASTER
- CRITICAL
- BARRIER
- ATOMIC
- FLUSH
- ORDERED
- THREADPRIVATE
Implementations may (and do) differ from the standard in which clauses are supported by each directive.
