Decomposition Techniques in Parallel Computing | Recursive, Data, Exploratory, Speculative

                 In this post, we will have overview of Decomposition Techniques in Parallel Computing.

                 
                Decomposition means dividing the big task into the sub-tasks. We allocate these sub tasks  to the different processors.

Watch following video:



Watch on YouTube: https://www.youtube.com/watch?v=PUfQ4eHigog


                 Broadly, there are four Decomposition Techniques in Parallel Computing.

1. Recursive Decomposition
2. Data Decomposition
3. Exploratory Decomposition
4. Speculative Decomposition

1. Recursive Decomposition
                  It is based on recursion.
e.g. Quick Sort 

Task Dependency Graph

2. Data Decomposition

c1=a1*b1+a2*b3
c2=a1*b2+a2*b4
c3=a3*b1+a4*b3
c4=a3*b2+a4*b4



3. Exploratory Decomposition

4. Speculative Decomposition
e.g. Switch case