Sun Studio 12 Update 1: OpenMP API User's Guide


The OpenMP API User's Guide summarizes the OpenMP Fortran 95, C, and C++ application program interface (API) for building multiprocessing applications. Sun Studio compilers support the OpenMP API. This guide is intended for scientists, engineers, and programmers who have a working knowledge of the Fortran, C, or C++ languages, and the OpenMP parallel programming model. Familiarity with the Solaris operating environment or UNIX in general is also assumed.

Typographic Conventions

The following table describes the typographic conventions that are used in this book.

Table P–1 Typographic Conventions





The names of commands, files, and directories, and onscreen computer output 

Edit your .login file.

Use ls -a to list all files.

machine_name% you have mail.


What you type, contrasted with onscreen computer output 

machine_name% su



Placeholder: replace with a real name or value 

The command to remove a file is rm filename.


Book titles, new terms, and terms to be emphasized 

Read Chapter 6 in the User's Guide.

A cache is a copy that is stored locally.

Do not save the file.

Note: Some emphasized items appear bold online.

Shell Prompts in Command Examples

The following table shows the default UNIX® system prompt and superuser prompt for the C shell, Bourne shell, and Korn shell.

Table P–2 Shell Prompts



C shell 


C shell for superuser 


Bourne shell and Korn shell 


Bourne shell and Korn shell for superuser 


Supported Platforms

This SunTM Studio release supports systems that use the SPARC® and x86 families of processor architectures: UltraSPARC®, SPARC64, AMD64, Pentium, and Xeon EM64T. The supported systems for the version of the Solaris Operating System you are running are available in the hardware compatibility lists at These documents cite any implementation differences between the platform types.

In this document, these x86 related terms mean the following:

For supported systems, see the hardware compatibility lists.

Accessing Sun Studio Documentation

You can access the documentation at the following locations:

The web site ( enables you to read, print, and buy Sun Microsystems manuals through the Internet.

Note –

Sun is not responsible for the availability of third-party Web sites mentioned in this document. Sun does not endorse and is not responsible or liable for any content, advertising, products, or other materials that are available on or through such sites or resources. Sun will not be responsible or liable for any actual or alleged damage or loss caused by or in connection with the use of or reliance on any such content, goods, or services that are available on or through such sites or resources.

Documentation in Accessible Formats

The documentation is provided in accessible formats that are readable by assistive technologies for users with disabilities. You can find accessible versions of documentation as described in the following table.

Type of Documentation 

Format and Location of Accessible Version 




HTML on the developer portal at 

Man pages 

HTML on the developer portal at

Online help 

HTML available through the Help menu and Help buttons in the IDE 

Release notes 


Resources for Developers

Visit to find these frequently updated resources:

The Sun Studio portal is one of a number of additional resources for developers at the Sun Developer Network web site,

Contacting Technical Support

If you have technical questions about this product that are not answered in this document, go to

Sun Welcomes Your Comments

Sun is interested in improving its documentation and welcomes your comments and suggestions. Submit your comments to Sun at this URL:

Please include the part number of the document in the subject line of your email. For example, the part number for this document is 820-7883–10.