HP aC++/HP C A.06.28 Programmer's Guide Integrity servers (769150-001, March 2014)

OMP PARALLEL SECTIONS Pragma
#pragma omp parallel sections [clause1, clause2, ...]
{
[#pragma omp section ]
structured-block
[#pragma omp section
structured-block ]
. . .}
where [clause1, clause2, ...] indicates that the clauses are optional. There can be zero or
more clauses.
The parallel sections pragma is a shortcut for specifying a parallel clause containing a
single sections pragma. parallel sections admits all the allowable clauses of the
parallel pragma and the sections pragma except for the nowait clause.
OMP SECTIONS Pragma
#pragma omp sections [clause1, clause2, ...]
{
#pragma omp section
[ structured-block ]
[#pragma omp section
structured-block ]
. . .
}
where [clause1, clause2, ...] indicates that the clauses are optional. There can be zero
or more clauses. clause may be one of the following:
• private(list)
• firstprivate(list)
• lastprivate(list)
• reduction(op:list)
• nowait
The section or sections pragmas identify a construct that specifies a set of constructs to be
divided among threads in a team. Each section is executed by one of the threads in the team.
OMP SINGLE Pragma
#pragma omp single [clause1, clause2, . . .]
[ structured-block ]
where [clause1, clause2, ...] indicates that the clauses are optional. There can be zero
or more clauses.
clause may be one of the following:
• private(list)
• firstprivate(list)
• copyprivate(list)
• nowait
The single directive identifies a construct that specifies the associated structured block that is
executed by only one thread in the team (not necessarily the master thread).
OMP TASK Pragma
#pragma omp task [clause1, clause2, . . .] new-line
[ structured-block ]
Other Pragmas 113