-xparallel

(SPARC) Parallelizes loops both automatically by the compiler and explicitly specified by the programmer. The -xparallel option is a macro, and is equivalent to specifying all three of -xautopar, -xdepend, and -xexplicitpar. With explicit parallelization of loops, there is a risk of producing incorrect results. If optimization is not at -xO3 or higher, optimization is raised to -xO3 and a warning is issued.

Avoid -xparallel if you do your own thread management.

The Sun WorkShop includes the license required to use the multiprocessor C options. To get faster code, this option requires a multiprocessor system. On a single-processor system, the generated code usually runs slower.

If you compile and link in one step, -xparallel links with the microtasking library and the threads-safe C runtime library. If you compile and link in separate steps, and you compile with -xparallel, then link with -xparallel