6.5 Thinking Concurrently

• What is the difference between concurrent computing and parallel computing?

  Concurrent computing runs tasks on one processor

  
• How does concurrent computing manage multiple processes on a single processor?

  By allocating time slices to each process
• What is parallel computing?

  Running multiple processes on multiple cores
• What happens in a world without concurrent processing?

  Each process finishes before another starts
• How does concurrent processing appear to users despite being sequential?

  It allocates microseconds to each task
• What types of modern programs utilize parallel computing?

  Photo and video editing software
• What must developers consider to determine parts of a problem that can be tackled concurrently?

  Dependencies between tasks
• How can batch programs be run efficiently?

  By running unrelated data sets in parallel
• What is the benefit of running batch programs on multiple cores?

  Increases time efficiency and resource usage
• What is concurrent processing in the context of multiple batch programs?

  Interchanging and pipelining programs on one processor
• What is the main advantage of concurrent processing?

  Increased program throughput
• What is a disadvantage of concurrent processing?

  Processes take longer with high computation
• How does concurrent processing minimize waiting time?

  By swapping to another task during waits
• What is a benefit of parallel processing for repetitive calculations?

  Speeds up performance by splitting processes
• What is a drawback of using multiple processors for tasks?

  Communication overhead can cause delays
• What can graphical processing units do quickly?

  Render 3D objects by splitting computations
• When might a task run faster on a single processor?

  When it is optimized for single processing
• Why is concurrent processing necessary in a flight simulator?

  To allow multiple events to occur simultaneously