Instructions

This is a template for creating the readme.md file for oneAPI Code samples. All sections are required, but modify as needed for your code sample

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# Mandelbrot Sample

Optimized for	Description
OS	Linux* Ubuntu* 18.04; Windows 10
Hardware	Skylake with GEN9 or newer
Software	Intel® oneAPI DPC++/C++ Compiler
What you will learn
Time to complete	xx minutes

Purpose

Example: The code will attempt to execute on an available GPU and fall back to the system's CPU if a compatible GPU is not detected. The compilation device is displayed in the output along with elapsed time to render the Mandelbrot image. This helps compare different offload implementations based on the complexity of the computation.

Key Implementation Details

Example: The basic DPC++ implementation explained in the code includes device selector, buffer, accessor, kernel, and command groups.

License

Code samples are licensed under the MIT license. See License.txt for details.

Third-party program Licenses can be found here: third-party-programs.txt

Building the InsertSampleName Here Program for CPU?, GPU? FPGA? or other?

Note: if you have not already done so, set up your CLI environment by sourcing the setvars script located in the root of your oneAPI installation.

Linux Sudo: . /opt/intel/oneapi/setvars.sh
Linux User: . ~/intel/oneapi/setvars.sh
Windows: C:\Program Files(x86)\Intel\oneAPI\setvars.bat

Include Files

The include folder is located at %ONEAPI_ROOT%\dev-utilities\latest\include on your development system.

Running Samples In DevCloud

On a Linux* System

Perform the following steps:

1. Build the program using the following cmake commands.

$ mkdir build
$ cd build
$ cmake ..
$ make

2. Run the program (default uses buffers):

   make run
   

Note: for USM use make run_usm

3. Clean the program using:

   make clean
   

On a Windows* System Using Visual Studio* Version 2017 or Newer

• Build the program using VS2017 or VS2019

  • Right-click on the solution file and open using either VS2017 or VS2019 IDE.
  • Right-click on the project in Solution Explorer and select Rebuild.
  • From the top menu, select Debug -> Start without Debugging.

• Build the program using MSBuild

  • Open "x64 Native Tools Command Prompt for VS2017" or "x64 Native Tools Command Prompt for VS2019"
  • Run the following command: MSBuild mandelbrot.sln /t:Rebuild /p:Configuration="Release"

Running the Sample

Application Parameters

You can modify the Mandelbrot parameters from within mandel.hpp. The configurable parameters include: row_size = col_size = max_iterations = repetitions = The default row and column size are 512. Max interatins and repetitions are both 100. By adjusting the parameters, you can observe how the performance varies using the different offload techniques.

Note: If the values drop below 128 for row and column, the output is limited to just text in the output window.

Example of Output

Platform Name: Intel(R) OpenCL HD Graphics
  Platform Version: OpenCL 2.1 
       Device Name: Intel(R) Gen9 HD Graphics NEO
    Max Work Group: 256
 Max Compute Units: 24

Parallel Mandelbrot set using buffers.
Rendered image output to file: mandelbrot.png (output too large to display in text)
       Serial time: 0.0430331s
     Parallel time: 0.00224131s
Successfully computed Mandelbrot set.