openmp, Qopenmp

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

IDE Equivalent

Windows: Language > OpenMP* Support

Linux: Language > Process OpenMP Directives

Mac OS X: Language > Process OpenMP Directives

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.

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