NAG FL Interface
x06akf returns the maximum number of nested active parallel regions allowed.
The routine may be called by the names x06akf or nagf_omp_get_max_active_levels.
x06akf, for multithreaded implementations, retrieves the maximum number of nested active parallel regions allowed. This has either been set by the user or is the default for the implementation of OpenMP being used.
In serial implementations of the NAG Library this routine will always return
. See the X06 Chapter Introduction
for a discussion of the behaviour of these routines when called in serial.
Chapman B, Jost G and van der Pas R (2008) Using OpenMP Portable Shared Memory Parallel Programming The MIT Press
Error Indicators and Warnings
Parallelism and Performance
Background information to multithreading can be found in the Multithreading
x06akf is not threaded in any implementation.
for a demonstration of how to use x06akf