Parallel Computing Models
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Questions and Answers

In SISD systems, what is the primary limitation of the processing element's speed?

  • The complexity of the machine instructions.
  • The number of CPUs available.
  • The size of the primary memory.
  • The rate at which the computer can transfer information internally. (correct)

    • Which type of system is well-suited for scientific computing due to its ability to perform vector and matrix operations?

  • SIMD system (correct)
  • SISD system
  • MISD system
  • MIMD system

    • According to Flynn's classification, what type of system can execute multiple instructions on a single data stream?

  • MISD system (correct)
  • SIMD system
  • MIMD system
  • SISD system

    • In a SISD system, how are machine instructions processed?

    <p>Sequentially</p> Signup and view all the answers

    What type of system can execute different instructions on multiple data streams?

    <p>MIMD system</p> Signup and view all the answers

    Which type of system is characterized by the execution of a single instruction on a single data stream?

    <p>SISD system</p> Signup and view all the answers

    What is the primary factor that contributes to the power of modern supercomputers?

    <p>Architecture and parallelism</p> Signup and view all the answers

    What is the primary function of middleware in a distributed system?

    <p>To enable computers to coordinate their activities and share resources</p> Signup and view all the answers

    Which of the following systems is characterized by a single instruction stream and a single data stream?

    <p>SISD (Single Instruction, Single Data) system</p> Signup and view all the answers

    Which of the following systems is characterized by a single instruction stream and multiple data streams?

    <p>SIMD (Single Instruction, Multiple Data) system</p> Signup and view all the answers

    Which of the following systems is characterized by multiple instruction streams and multiple data streams?

    <p>MIMD (Multiple Instruction, Multiple Data) system</p> Signup and view all the answers

    What is the primary characteristic of a Multiple-instruction, single-data (MISD) machine?

    <p>Executing different instructions on the same dataset</p> Signup and view all the answers

    What is the key difference between distributed memory MIMD machines and shared memory MIMD machines?

    <p>The way communication between PEs takes place</p> Signup and view all the answers

    What is the main goal of dividing a program into smaller chunks in parallel programming?

    <p>To allow each processor to work on separate chunks of the problem</p> Signup and view all the answers

    What is the main advantage of using a MIMD machine over a MISD machine?

    <p>MIMD machines can execute multiple instructions on multiple datasets</p> Signup and view all the answers

    What is the term used to describe systems that are based on the MIMD model and have a shared memory?

    <p>Tightly coupled multiprocessor systems</p> Signup and view all the answers

    What is the Flynn's classification of a system that executes a single instruction on a single dataset?

    <p>SISD (Single-Instruction, Single-Data)</p> Signup and view all the answers

    Which parallel programming approach is highly suitable for processing on machines based on the SIMD model?

    <p>Data parallelism</p> Signup and view all the answers

    What is the primary limitation of increasing the speed of a system?

    <p>It is proportional to the square root of system cost</p> Signup and view all the answers

    What is the relationship between the speed of a parallel computer and the number of processors?

    <p>Speed increases as the logarithm of the number of processors</p> Signup and view all the answers

    What is Amdahl's Law primarily concerned with?

    <p>The relationship between speedup and number of processors</p> Signup and view all the answers

    What is the primary advantage of fine-grained granularity in parallel computation?

    <p>Higher opportunity for performance enhancement</p> Signup and view all the answers

    What is the primary characteristic of the farmer-and-worker model in parallel programming?

    <p>Master-slave architecture</p> Signup and view all the answers

    What is the primary characteristic of parallel computing systems?

    <p>Each processor is of the same type and has the same capability.</p> Signup and view all the answers

    In parallel computing, how do processors communicate with each other?

    <p>By means of shared memory.</p> Signup and view all the answers

    What is the key difference between parallel and distributed computing?

    <p>The location of the computing elements.</p> Signup and view all the answers

    What is the primary advantage of parallel computing systems?

    <p>Improved scalability.</p> Signup and view all the answers

    What is the primary characteristic of distributed computing systems?

    <p>Heterogeneity of computing elements.</p> Signup and view all the answers

    What is the primary goal of dividing a computation into units in parallel and distributed computing?

    <p>To allow concurrent execution on different computing elements.</p> Signup and view all the answers

    What is the primary characteristic that distinguishes a SISD system from a SIMD system?

    <p>The number of data streams processed</p> Signup and view all the answers

    What type of computing system is particularly well-suited for applications involving vector and matrix operations?

    <p>SIMD systems</p> Signup and view all the answers

    Which of the following systems is characterized by the execution of multiple instructions on different data streams?

    <p>MIMD systems</p> Signup and view all the answers

    What is the primary limitation of the processing element's speed in a SISD system?

    <p>The rate of internal information transfer</p> Signup and view all the answers

    Which of the following systems is characterized by the execution of a single instruction on multiple data streams?

    <p>SIMD systems</p> Signup and view all the answers

    What is the primary advantage of using a SIMD system over a SISD system?

    <p>Enhanced instruction-level parallelism</p> Signup and view all the answers

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