This download link is referred from the post: AKTU B-Tech Last 10 Years 2010-2020 Previous Question Papers || Dr. A.P.J. Abdul Kalam Technical University
Printed Pages: 02
Paper Id: 110623
Sub Code: NCS-063
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Roll No.
B.TECH
(SEM VI) THEORY EXAMINATION 2017-18
PARALLEL ALGORITHM
Time: 3 Hours
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Total Marks: 100
Note: 1. Attempt all Sections. If require any missing data; then choose suitably.
SECTION A
1. Note: Attempt all parts. All parts carry equal marks. Write answer in short. (10*2=20)
- (a) What are the basic concepts of Parallel Processing?
- (b) What do you mean by Sequential Model? Also why there is a need of parallel model
- (c) Differentiate between Utilization and efficiency?
- (d) What is Sequential Bottleneck in Amdahl's Law?
- (e) What is Bitonic Sequence?
- (f) What do you understand by Comparator?
- (g) What do you understand by Matrix operations?
- (h) Explain Matrix Transposition.
- (i) Explain Minimum cost Spanning Tree. Also What do you understand by Graph?
- (j) What is Parallel-Backtracking?
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SECTION B
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2. Note: Attempt any three. Each Question carry 10 marks (3*10=30)
- (a) Explain how Pyramid network superior to Mesh and Tree Models. also explain Butterfly and Shuffle-exchange network.
- (b) What do you mean by cost optimal algorithm? Compute the speedup, cost and efficiency for addition of n numbers by using n/2 processors by parallel reduction (parallel sum) algorithm compared to sequential algorithm.
- (c) What do you understand by Lower bounds on parallel sorting? Explain Odd Even Transposition Sort to sort these sequences? X= (G, H, F, D, E, C, B, A).Assume there are four processors and show each step.
- (d) What do you mean by sorting networks? Also discuss the enumeration sort algorithm.
- (e) Explain the following: (i) Parallel Alpha Beta search (ii) Parallel Branch and Bound.
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SECTION C
3. Attempt any one part of the following: (10*1=10)
- (a) Explain RAM model of serial computation and PRAM model of parallel computation. Summarize the similarities and differences between them. Or
- (b) Discuss various models of computation in PRAM model. Also explain PRAM algorithm to compute Parallel and prefix sum with example.
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4. Attempt any one part of the following: (10*1=10)
- (a) Write and discuss Cost-Optimal Parallel Algorithm to find Prefix Sums and also Explain Brent's Theorem? Write its statement and proof. Or
- (b) What is Amdahl's Effect? Explain Also discuss Amdahl's Law. also explain difference between Difference between Amdahl's and Gustafson's Laws.
5. Attempt any one part of the following: (10*1=10)
- (a) Explain parallel merging. Also explain merging on the EREW Model. Or
- (b) A list of n=2k unsorted elements can be sorted by using a network of 2k-2k(k+1) comparators is time O(log2n).Sort a list (C,D,B,H,E,G,F,A) using bitonic merge sort
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6. Attempt any one part of the following: (10*1=10)
- (a) Explain parallel searching. Also discuss CREW parallel searching algorithm in detail. Or
- (b) Discuss 2-D mesh SIMD Model. Describe parallel matrix multiplication algorithm on 2D Mesh SIMD Model
7. Attempt any one part of the following: (10*1=10)
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- (a) Explain Parallel alpha beta search. Also discuss following in brief with example. (i) Permutation. (ii) Combination. Or
- (b) What is combinatorial search problem? How a search problem can be represented by tree ? Describe a combinatorial searching problem solving methodology that can be represented by tree. Also Explain Depth and Breadth First search algorithm with an example.
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This download link is referred from the post: AKTU B-Tech Last 10 Years 2010-2020 Previous Question Papers || Dr. A.P.J. Abdul Kalam Technical University