10.1.4 Compiling for Parallelization

The Sun Studio compilers support the OpenMP parallelization model natively as the primary parallelization model. For information on OpenMP parallelization, see the OpenMP API User’s Guide. Sun and Cray-style parallelization refer to legacy applications and are no longer supported by current Sun Studio compilers.

.

Notes on these options:

• Many of these options have equivalent synonyms, such as -autopar and -xautopar. Either may be used.

• The compiler prof/gprof profiling options -p, -xpg, and -pg should not be used along with any of the parallelization options. The runtime support for these profiling options is not thread-safe. Invalid results or a segmentation fault could occur at runtime.

• -reduction requires -autopar.

• -autopar includes -depend and loop structure optimization.

• -noautopar, -noreduction are the negations.

• Parallelization options can be in any order, but they must be all lowercase.

• Reduction operations are not analyzed in explicitly parallelized loops.

• -xopenmp also invokes -stackvar automatically.

• The options -loopinfo and -vpara must be used in conjunction with one of the parallelization options.