MAC 5742 - EP2 - Mandelbrot set

Mandelbrot set visualization using parallel computation made for MAC5742 course at IME-USP

Overview

This repository contains the code for the ssecond program exercise at MAC 5742 - Introduction to Concurrent, Parallel and Distributed Programming at IME-USP.

The exercise solution should contain code that calculates the mandelbrot set image given a few parameters. This should be done to execute this in parallel using either OpenMP or CUDA.

Building

The build process uses the nvcc compiler as default, to do GPU processing. If you don't have it installed, you can change the compiler with the env variable ALT_CC (tested only with nvcc and g++). Ex:

$ make clean
$ ALT_CC=g++ make

If you do, just go to the src folder and run make:

$ cd src
$ make

This will generate an executable file called mbrot under the src folder

Running

To run, follow this pattern:

$ ./mbrot <C0_REAL> <C0_IMAG> <C1_REAL> <C1_IMAG> <W> <H> <EXEC_MODE> <N_THREADS> <OUTPUT_PATH>

Where:

• CO_REAL: real part of the C0 complex number;
• CO_IMAG: imaginary part of the C0 complex number;
• C1_REAL: real part of the C1 complex number;
• C1_IMAG: imaginary part of the C1 complex number;
• W: output image's width;
• H: output image's height;
• EXEC_MODE: "cpu" for executing on CPU, "gpu" for GPU;
• N_THREADS: number of threads for parallelization. If executing on GPU, number of threads for each block;
• OUTPUT_PATH: output path for generated image.

Running this will generate a PNG image visualization of the mandelbrot set size with dimensionns WxH, limited by C0 and C1 complex numbers regions.

Example

Running the following command will generate this image:

$ ./mbrot 0.03 -0.65 0.1 -0.6 1920 1080 1 256 examples/0.03_-0.65_0.1_-0.6.png

More examples are located in the examples folder.