Multicore CPU's

Which of the following is the best definition for 'SIMD'?

• A single operation carried out on many pieces of data at the same time

• Different instructions carried out at the same time on different pieces of data

• A single operation carried out on a single piece of data at a time

• Different operations carried out on the same piece of data at the same time

Which of the following would not be a recommended use for a GPU?

• Handling Operating System requests

• Password cracking

• Weather modelling

• Graphics rendering

Which of the following is NOT a reason why doubling the number of processor cores does not lead to a direct doubling of processor speed and efficiency in all situations?

• Multi-core processors are rarely used

• Many problems are not fully parallelisable

• Writing programs to take advantage of multiple cores can be complex

• There are overheads in terms of communication between multiple cores

Which of the following is the most appropriate definition for a 'GPU'?

• A specialised form of co-processor which works alongside the main CPU - the most common use is to aid graphics and other specialised tasks

• The memory store where frequently used instructions and data are stored in the CPU

• A specialised form of co-processor which works alongside the main CPU - its only function is to support and aid in graphical processing

• A specialised form of processor that performs pipelining

A dual core system is always twice as fast as a single core system.

• TRUE

• FALSE

Which of the below is correct when describing Multicore Systems

• The simultaneous use of several processors to perform a single job. A job may be split into a number of tasks each of which may be processed by any available processor

• Development of CISC architecture with several sets of CPU components in one microprocessor

• A design that produces a simple, cheap integrated circuit with a basic range of machine instructions. Relies on speed as complex instructions take many machine cycles

• Traditional computer architecture that forms the basis of most digital computer systems.  A single control unit manages program control flow following a linear sequence of “fetch-decode-execute

Which is correct when describing Parallel Processor System?

• The simultaneous use of several processors to perform a single job. A job may be split into a number of tasks each of which may be processed by any available processor

• Development of CISC architecture with several sets of CPU components in one microprocessor

• A design that produces a simple, cheap integrated circuit with a basic range of machine instructions. Relies on speed as complex instructions take many machine cycles

• A design that produces a complicated and expensive integrated circuit capable of performing a large variety of complex instructions. Complex instructions can be executed with few machine cycles