2. 1. 5 Thinking Concurrently

Question 1

Concurrent thinking

Answer 1

• Process of completing more than one task at any given time
• Concurrent processing means different tasks given slices of processor time, gives illusion that tasks being performed simultaneously
• Concurrent thinking, mindset allows you to spot patterns and parts of problem where concurrency can be applied
• Imagine you were tasked with recording how many cars go by, more specifically their number plates and colours
• Thinking concurrently, you would get the number plate and colour of one car before moving on to the next
• When determining what parts of problem can be solved at the same time, must assess what parts are related
• Related sections often can be solved simultaneously, can therefore be dealt with concurrently

Question 2

Concurrent processing

Answer 2

• Difference between concurrent processing and thinking, processing uses a computer processer, thinking uses our brain rather than a computer system
• Parallel processing is when multiple processors used to complete one task simultaneously
• Concurrent processing, each task given slice of processor time to make it appear that tasks are being complete simultaneously, in reality they are executed sequentially

Question 3

Benefits of Concurrent processing

Answer 3

• Number of tasks completed in a given time increased
• Less time wasted on waiting for input or user interaction, other tasks can be completed during this time

Question 4

Drawbacks of Concurrent processing

Answer 4

• Takes longer to complete when large numbers of users or tasks are involved, as processes cannot be completed at once
• Overhead in coordinating and switching between processes, reduces program output
• Not all tasks suited to being broken up and performed concurrently