6.5 Known Limitations of the Current Implementation

Here are the known limitations to autoscoping in the current Sun Studio Fortran 95 compiler.

• Only OpenMP directives are recognized and used in the analysis. Calls to OpenMP runtime routines are not recognized. For example, if a program uses OMP_SET_LOCK() and OMP_UNSET_LOCK() to implement a critical section, the compiler is not able to detect the existence of the critical section. Use CRITICAL and END CRITICAL directives if possible.

• Only synchronizations specified by using OpenMP synchronization directives, such as BARRIER and MASTER, are recognized and used in the analysis. User-implemented synchronizations, such as busy-waiting, are not recognized.

• Autoscoping is not supported when compiling with -xopenmp=noopt.