Directive
Description
PARALLEL
END PARALLEL
Defines a parallel region.
DO
END DO
Identifies an iterative worksharing construct in which the iterations of the associated loop should be executed in parallel.
SECTIONS
END SECTIONS
Identifies a non-iterative worksharing construct that specifies a set of structured blocks that are to be divided among threads in a team.
SECTION
Indicates that the associated structured block should be executed in parallel as part of the enclosing sections construct.
SINGLE
END SINGLE
Identifies a construct that specifies that the associated structured block is executed by only one thread in the team.
PARALLEL FOR
A shortcut for a parallel region that contains a single for directive.
Note
The parallel or for OpenMP directive must be immediately followed by a for statement. If you place other statement or an OpenMP directive between the parallel or for directive and the for statement, the Intel C++ Compiler issues a syntax error.
FOR
Identifies an iterative work-sharing construct that specifies a region in which the iterations of the associated loop should be executed in parallel.
PARALLEL SECTIONS
END PARALLEL SECTIONS
Provides a shortcut form for specifying a parallel region containing a single SECTIONS construct.
MASTER
END MASTER
Identifies a construct that specifies a structured block that is executed by only the master thread of the team.
CRITICAL[lock]
END CRITICAL[lock]
Identifies a construct that restricts execution of the associated structured block to a single thread at a time. Each thread waits at the beginning of the critical construct until no other thread is executing a critical construct with the same lock argument.
BARRIER
Synchronizes all the threads in a team. Each thread waits until all of the other threads in that team have reached this point.
ATOMIC
Ensures that a specific memory location is updated atomically, rather than exposing it to the possibility of multiple, simultaneously writing threads.
FLUSH [(list)]
Specifies a "cross-thread" sequence point at which the implementation is required to ensure that all the threads in a team have a consistent view of certain objects in memory. The optional list argument consists of a comma-separated list of variables to be flushed.
ORDERED
END ORDERED
The structured block following an ORDERED directive is executed in the order in which iterations would be executed in a sequential loop.
THREADPRIVATE
Makes the named file-scope or namespace-scope variables specified private to a thread but file-scope visible within the thread.