Exercise in concurrency in C for my Operating Systems class (CSE 3320 @ UTA).
This is composed of two programs: mandel and mandelseries.
This program will take an image's specification from the command-line and generate the mandelbrot fractal acoording to them. The image will be split across the specified number of threads.
By default, the program will split the workload by assigning each thread a starting and ending row, and after they are finished computing, the thread will terminate. However, I also added an optional work-stealing algorithm which will split the image into individual rows. When a thread finishes processing a row, it will check to see if there is another row it could start working on. With this algorithm, a thread will only exit after all of the work has either been done or is being worked on.
The program should be invoked like this:
./bin/mandel [-w] [options]
Where the -w flag will enable the workstealing algorithm.
These are the valid options for the program:
| Flag | Argument | Default | Meaning |
|---|---|---|---|
| -W | uint | 500 | the width of the output images |
| -H | uint | 500 | the height of the output images |
| -x | double | 0.0 | the x coordinate of the center of the image |
| -y | double | 0.0 | the y coordinate of the center of the image |
| -s | double | 4.0 | the scale of the image |
| -m | uint | 1000 | the maximum number of iterations to try at a point |
| -o | string | "mandel.bmp" | the output image file. A number will be added before the extension denoting which image in the series it is |
| -n | uint | 1 | the number of threads to process the image with |
This program will take an image's specification from command-line arguments and generate a series of 50 images which gradually zoom in on the specified image.
The program should be invoked like this:
./bin/mandelseries [options] {number_of_processes}
Where {number_of_processes} is the maximum number of concurrent child processes
to let run at any time.
These are the valid options for the program:
| Flag | Argument | Default | Meaning |
|---|---|---|---|
| -W | uint | 500 | the width of the output images |
| -H | uint | 500 | the height of the output images |
| -x | double | 0.0 | the x coordinate of the center of the image |
| -y | double | 0.0 | the y coordinate of the center of the image |
| -s | double | 4.0 | the scale of the image |
| -m | uint | 1000 | the maximum number of iterations to try at a point |
| -o | string | "mandel.bmp" | the output image file. A number will be added before the extension denoting which image in the series it is |