Printed Pages-2 Following Paper ID and R.ll No. to be filled in yourAnsw", Book

B. Tech. (sEM. VII ) THEORYEXAMINATTON 2011_12

PARALLEL ALGORITHMS Time

: 3 Hours

Note

:- (i)

:

100

Attempt aII questions.

(i,) 1.

Total Marks

Make suitable assumptions if required.

Answer any two parts

:

e0x2:20) model of

(a) (i) what do you mean by a sequential

computation ? Explain. Discuss the advantages and disadvantages of it.

(iD what is data parailerism ? Exprain. Is it similar to pipelining

(b) (i)

?

Discuss.

What is Amdahl Effect ? Explain. AIso discuss Amdahl's Law.

(ii) (c) (i) (iD

2.

Discuss PRAM model of parallel computation. Describe the Bufterfly Model with suitable diagram. Explain EREW and CREW computational model.

Answer any two parts

:

(10x2=20)

(a) Wrat are the various performance measures of parallel algorithm ? Discuss various performance measures with example. ECS073/KIH-26374

lTurn Over

l1

(b) What do you mean by cost-optimality

? Discuss any one

cost optimal algorithm in detail.

(c)

Differentiate between the hypercube and cube connected cycle paral Ief computational model.

3.

Answer any two parts

:

(10x2=20)

(a) What do you mean by parallel sorting networks ? Also discuss the enumeration sort algorithm. (b) Discuss Bitonic merge in detail with suitable example. (c) Discuss the parallel Quick sort algorithm in detail. 4.

Answer any two parts

(a)

:

\

'^:'

(10x2=20)

Explain parallel searching. Also discuss any one parallel searching algorithm in detail.

(b)

Describe the parallel matrix multiplication algorithm on

PRAM model.

(c)

Discuss the parallel algorithm for back substitution for solving the linear equations on a UMAmultiprocessor.

5.

Write short notes on any two of the following

(a) (b) (c)

:

(10x2=20) t

First Depth and Breadth First search algorithm for

graph

Parallel branch and Bound search. Parallel Alpha Beta search.

ECS073/KIH-26374

24625

-'-*-,1

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