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

0

. See the X06 Chapter Introduction for a discussion of the behaviour of these routines when called in serial.

4 References

The OpenMP API Specification for Parallel Programming

Chapman B, Jost G and van der Pas R (2008) Using OpenMP Portable Shared Memory Parallel Programming The MIT Press

5 Arguments

None.

6 Error Indicators and Warnings

None.

7 Accuracy

Not applicable.

8 Parallelism and Performance

Background information to multithreading can be found in the Multithreading documentation.

x06akf is not threaded in any implementation.

9 Further Comments

None.

10 Example

See x06ajf for a demonstration of how to use x06akf.

NAG Library Manual, Mark 28.6

Interfaces: FL CL CPP AD PY MB

NAG FL Interface Introduction

X06 (Omp) Chapter Contents

X06 (Omp) Chapter Introduction

x06ak: FL CL CPP AD PY MB

NAG FL Interfacex06akf (get_​max_​active_​levels)

▸▿ Contents

1 Purpose

2 Specification

3 Description

4 References

5 Arguments

6 Error Indicators and Warnings

7 Accuracy

8 Parallelism and Performance

9 Further Comments

10 Example

NAG FL Interface
x06akf (get_max_active_levels)