openmp

There are three basic OpenMP clauses namely firstprivate, lastprivate and ordered. firstprivate clause is used to initialize a variable from the serial part of the code and private clause doesn't initialize the variable

There are 3 basic functions in OpenMP namely omp_get_thread_num, omp_set_num_threads (nthreads) and omp_get_num_threads. We have given a basic C/ C++ example to demonstrate the use of the function and the observation of the output as well

If some section of your code can be parallelized and you have more than one processor, you should definitely speed up the execution of your program using OpenMP directives. We have demonstrated how to use Amdahl's law to calculate the expected speed up and profiling to find which section takes time

OpenMP is an open source library which is used for multi-threaded parallel processing and shared-memory multi-processor (core) computers. In OpenMP, part of program is a single thread and part is multi-threaded We have given advantages, disadvantages, industry use example, approach of OpenMP library