2.1.5 Thinking Concurrently

Question 1

Why do we have this topic?

Answer 1

As components of software development can happen at the same time.

Question 2

What is parallel computing?

Answer 2

when more than one processor is executing seperate instructions at the same time

Question 3

What is concurrent processing?

Answer 3

When more than one process is running from a program at once, with each process receiving a slice of processor time.

Question 4

What is concurrent processing very closely related to?

Answer 4

Processor scheduling methods - round robin

Question 5

What are the benefits of concurrent processing?

Answer 5

• Increased program throughput

- No time wasted by processor (as any interrupts will be put into a seperate queue and next process will start)

Question 6

What are the drawbacks of concurrent processing?

Answer 6

• Not always possible

- A lot of computation can lead to slowing down of performance

Question 7

What are the benefits of parallel computing?

Answer 7

• Tasks are completed simultaneously, so processing is faster
• Graphic processing performance (rendering) is greatly increased (individual part of graphic worked on by 1 processor)
• Multiple web tabs can be handled at the same time

Question 8

What are the drawbacks of parallel computing?

Answer 8

-Overhead in coordinating the processors, so some tasks may run slower than with 1 processor

Question 9

What is concurrency?

Answer 9

things happening simultaneously

Question 10

What is a concurrent software licence?

Answer 10

a software licence that allows users to use software/program at the same time

Question 11

What is an example of single concurrency?

Answer 11

Concurrent processing (although instructions are executed sequentially the ability to switch between tasks makes it seem like theyre being executed at the same time)

Question 12

What is an example of multiprocessor concurrency?

Answer 12

Parallel computing

Question 13

Why is concurrency important in software development?

Answer 13

We can identify components of a problem that can be solved simultaneously and determine points at which they need to be synchronised.

Question 14

What is multithreading?

Answer 14

a technique where a section of a code can be used by multiple processors at different stages of execution

Question 15

What type of a chart do we use to show plans of tasks in an efficient manner?

Answer 15

A Gantt Chart

Question 16

Why is concurrency important?

Answer 16

Speeds up processes and avoids delays