C program that multiplies two sets of matrices together and prints the results. Implemented using p-threads multithreading where each thread computes one element of the product. This was my 5th lab assignment for the Operating Systems class at CSU Channel Islands.
This program is designed to be run on Linux.
Open up the matrixMult folder in terminal. To compile:
cd cmake-build-debug
cmake ..
make
To run:
cd bin
./matrixMult in.txt
If you would like to multiply different matrices you must edit in.txt which is located in the bin folder. The first line of the file should be m n k where m x n are the dimensions of matrix A1, n x k are the dimensions of matrix B1, and m x k are the dimensions of the resulting matrix A1 x B1. The dimensions are written as numRows x numColumns.
Enter the matrices on the following lines seperating each number by spaces and with each row on a new line. Enter a blank line and then follow the same format for matrices A2 and B2.
The following example of an in.txt file multiplies matrix A1 with dimensions 2 x 4 times matrix B1 with dimensions 4 x 3, then matrix A2 with dimensions 1 x 5 times matrix B2 with dimensions 5 x 1
2 4 3
1 4 6 10
2 7 5 3
1 4 6
2 7 5
9 0 11
3 1 0
1 5 1
1 2 3 4 5
1
2
3
4
5
I learned how to use pthreads, specifically writing a method that acts as a thread. I also learned how to allocate the appropriate data structures, pass them to methods, and how to join the threads after computation.
The basic structure of this program was created by Dr. Bieszczad for COMP 362 Operating Systems at CSU Channel Islands. He also answered many of my questions as I worked on the project.