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First Semester M.Tech. Degree Examinationr'Jume /July 24rc

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Mutrticore Architecture and Frograrmming (.)

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Time: 3 hrs.

Max. Marks:100

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Note: Answer nrry FIVE.f ull questions.

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Explain the Flynn's taxoncmy,with the help of a sr"ritable diagram" Explain what is ILP? Explain Amdahl's law applied to I-trT technology"

2a.

(10 Marks) Discuss with a neat figure the florv of threads in an execution environment. Explain what happens when a thread is created, with the help of appropriate figure. (04 l{arks} (06 Marks) Explain what do you mean by systeni virtualization.

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Explain what is synchronization, critical section and deadlocks. What are the locks'i Discuss the various lock types.

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With a program in C# language, ilhistrate a simple creation ol'a thread in

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create( ) detach( )

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State the ways in which memory can be declared as private in openMP. Give are exarnple. (10 Marks) Explain the four schedule schemes in OepnMP. (10 Marks)

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.NET framework. Giving the prototypes of each, describe the following pthread APIs. Pthreacl

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Explain the major fcrrms of breaking programs dorvn in to inriividual tasks and indentifying (06 Marks) dependencies between them giving an example for each. Explain the challenges faced manasing multiple threads and their comrnunication. (04 Marks) Discuss the basic working steps of Floyd and Steinberg's algorithm and give the C-language implementation. (10 Marks)

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Explain why too many threads can seriously degrade program performance. (10 Marks) Describe the various ways that are used to prevent a low priority thread blocking a high priority thread from running. (10 Marks)

Write short notes on : Multicore architecture Vs HT technology Parallel programming patterns Protecting updates of shared variableb ABA problem.

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(20 Marks)