This is a simple demo of working code that uses the pthreads library. Unlike the PARMACS-based code used in the ECE666 textbook, this code can be compiled and executed.
This repo contains three source files and a makefile.
seq-pi.cis the sequential version of the Monte Carlo method to estimate the value of π. The code is hardcoded to run 128M (where 1M = 1024x1024) trials.pthreads-pi.cis the pthreads-based parallel version ofseq-pi.c. It is functionally correct. No effort has been made to optimize its performance. It is hardcoded to use 8 threads.pthreads-demo.cis a simple program to highlight thepthread_createandpthread_joinfunctionalities. Each thread prints some basic thread-information to illustrate the parallel execution.
Each source file can be compiled with the DEBUG flag defined to (1) use repeatable random numbers, (2) use fewer threads and/or smaller problems, and (3) print additional diagnostic information.