The OpenMP specification defines several environment variables that control the execution of OpenMP programs. For details, refer to the OpenMP 4.0 specification at http://openmp.org. Also see Chapter 9, OpenMP Implementation-Defined Behaviors for information about the implementation of OpenMP environment variables in Oracle Solaris Studio.
Oracle Solaris Studio supports additional environment variables which are not part of the OpenMP specification, are summarized in Oracle Solaris Studio Environment Variables.