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The “omp for” Directive
Clauses Supported
- Schedule(type[ ,chunk ] )
- Private(list)
- Lastprivate(list)
- Collapse\
- Ordered
- Firstprivate(list)
- Shared(list)
- Reduction(operator:list)
- Nowait
Example 1
A Parallel For Loop Example
#pragma omp parallel
{
#pragma omp for
for(int i = 0; i < N; i++){
do some work( i );
}
} |
- The variable i is made private to each thread by default you could do it explicitly by private(i) clause.
The “sections” Directive
- It specifies that the enclosed section(s) of codes are to be divided among the threads in the team
#pragma omp sections [ clause(s) ]
{
#pragma omp section
< codeblock1 >
#pragma omp section
< codeblock2 >
#pragma omp section
:
} |
- Independent section directives are nested within a sections directive.Each section is executed once by a thread in the team.
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