3rd-party/tbb/examples/task_arena/fractal/readme.html
The example calculates two classical Mandelbrot fractals with different concurrency levels.
The application window is divided into two areas where fractals are rendered. The example also has the console mode.
System Requirements
For the most up to date system requirements, see the release notes.
Files
main.cppMain program which parses command line options and runs the fractals calculation in GUI or Console mode. fractal.hInterfaces of fractal and fractal_group classes. fractal.cppImplementations of fractal and fractal_group classes. fractal_video.hGUI mode support interface. MakefileMakefile for building the example.
Directories
msvsContains Microsoft* Visual Studio* workspace for building and running the example (Windows* systems only). xcodeContains Xcode* IDE workspace for building and running the example (macOS* systems only).
For information about the minimum supported version of IDE, see release notes.
Build instructions
General build directions can be found here.
Usage
fractal _-h_Prints the help for command line options fractal [n-of-threads=value] [n-of-frames=value] [max-of-iterations=value] [grain-size=value] [silent] [single]fractal [n-of-threads [n-of-frames [max-of-iterations [grain-size]]]] [silent] [single]n-of-threads is the number of threads to use; a range of the form low[:high], where low and optional high are non-negative integers or 'auto' for a platform-specific default number.
n-of-frames is a number of frames the example processes internally.
max-of-iterations is a maximum number of the fractal iterations.
grain-size is an optional grain size, must be a positive integer.
use-auto-partitioner - use tbb::auto_partitioner.
silent - no output except elapsed time.
single - process only one fractal.
To run a short version of this example, e.g., for use with Intel® Parallel Inspector: Build a debug version of the example (see the build instructions).
Run it with a small fractal iterations number and the desired number of threads, e.g., fractal 4 1 10000.
Hot keys
The following hot keys can be used in interactive execution mode when the example is compiled with the graphical user interface:
<left mouse button> Make the fractal active <w> Move the active fractal up <a> Move the active fractal to the left <s> Move the active fractal down <d> Move the active fractal to the right <q> Zoom in the active fractal <e> Zoom out the active fractal <r> Increase quality (count of iterations for each pixel) the active fractal <f> Decrease quality (count of iterations for each pixel) the active fractal <esc> Stop execution.
Legal Information
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