JavaScript is required to for searching.
Skip Navigation Links
Exit Print View
Oracle Solaris Studio 12.3: OpenMP API User's Guide     Oracle Solaris Studio 12.3 Information Library
search filter icon
search icon

Document Information

Preface

1.  Introducing the OpenMP API

2.  Compiling and Running OpenMP Programs

3.  Implementation-Defined Behaviors

3.1 Task Scheduling Points

3.2 Memory Model

3.3 Internal Control Variables

3.4 Dynamic Adjustment of Threads

3.5 Loop Directive

3.6 Constructs

3.6.1 SECTIONS

3.6.2 SINGLE

3.6.3 ATOMIC

3.7 Routines

3.7.1 omp_set_num_threads()

3.7.2 omp_set_schedule()

3.7.3 omp_set_max_active_levels()

3.7.4 omp_get_max_active_levels()

3.8 Environment Variables

3.9 Fortran Issues

3.9.1 THREADPRIVATE Directive

3.9.2 SHARED Clause

3.9.3 Runtime Library Definitions

4.  Nested Parallelism

5.  Tasking

6.  Automatic Scoping of Variables

7.  Scope Checking

8.  Performance Considerations

A.  Placement of Clauses on Directives

Index

3.6 Constructs

3.6.1 SECTIONS

The structured blocks in the sections construct are assigned to the threads in the team in a static with no chunk size fashion, so that each thread gets an approximately equal number of consecutive structured blocks.

3.6.2 SINGLE

The first thread to encounter the single construct will execute the construct.

3.6.3 ATOMIC

The implementation replaces all atomic directives by enclosing the target statement with a special, named critical construct. This operation enforces exclusive access between all atomic regions in the program, regardless of whether these regions update the same or different storage locations.