qopenmp, Qopenmp
Enables recognition of OpenMP* features
and tells the parallelizer to generate multi-threaded code based on OpenMP*
directives.
Syntax
Linux:
-qopenmp
-qno-openmp
Windows:
/Qopenmp
/Qopenmp-
Arguments
None
Default
- -qno-openmpor/Qopenmp-
- No OpenMP* multi-threaded code is generated by the compiler.
Description
This option enables recognition of OpenMP* features and
tells the parallelizer to generate multi-threaded code based on 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.
This option can
also be specified as
-fopenmp
on Linux* systems.
To enable offloading to a specified GPU target, you
must also specify option
fopenmp-targets
(Linux*) or
/Qopenmp-targets
(Windows).
Option
-fopenmp
is not the same as option
-qopenmp
. Option
-fopenmp
will
not
do offloading.
Options that use OpenMP* API are available for both
Intel® microprocessors and non-Intel microprocessors, but these options may
perform additional optimizations on Intel® microprocessors than they perform on
non-Intel microprocessors. The list of major, user-visible OpenMP constructs
and features that may perform differently on Intel® microprocessors versus
non-Intel microprocessors include: locks (internal and user visible), the
SINGLE construct, barriers (explicit and implicit), parallel loop scheduling,
reductions, memory allocation, thread affinity, and binding.
Product and Performance Information
|
|---|
Performance varies by use, configuration and other factors. Learn more at
www.Intel.com/PerformanceIndex.
Notice revision #20201201
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IDE Equivalent
Visual Studio:
Language > OpenMP*
Support
Eclipse:
Language > Process
OpenMP Directives
Alternate Options
Linux:
-fiopenmp
Windows:
/Qiopenmp