openmp, Qopenmp

Enables the parallelizer to generate multi-threaded code based on the OpenMP* directives.

IDE Equivalent

Windows: Language > Process OpenMP Directives

Linux: None

Mac OS X: None

Architectures

IA-32, Intel® 64, IA-64 architectures

Syntax

Linux and Mac OS X:

-openmp

Windows:

/Qopenmp

Arguments

None

Default

OFF	No OpenMP multi-threaded code is generated by the compiler.

Description

This option enables the parallelizer to generate multi-threaded code based on the OpenMP* directives. The code can be executed in parallel on both uniprocessor and multiprocessor systems.

If you use this option, multithreaded libraries are used, but option fpp is not automatically invoked.

This option sets option automatic.

This option works with any optimization level. Specifying no optimization (-O0 on Linux or /Od on Windows) helps to debug OpenMP applications.

Note

On Mac OS X systems, when you enable OpenMP*, you must also set the DYLD_LIBRARY_PATH environment variable within Xcode or an error will be displayed.

Alternate Options