No. of Printed Pages: 3 IBICS-022I
B.Tech. -VIEP -COMPUTER SCIENCE AND ENGINEERING (BTCSVI)
Term-End Examination
OULJ43
December, 2016
BICS-022 COMPUTER ARCHITECTURE
Time hours Maximum Marks: 70
Note: Attempt any seven questions. All questions carry equal marks.

1. State and discuss the significance of Amdahl's law. What is the major shortcoming in applying Amdahl's law? 10

2. Define the following performance metrics 5

Clock rate

Clock cycle

Throughput

Response time

MIPS

If machine A runs a program in 10 seconds and machine B runs the same in 15 seconds, how much faster is A than 5

3. What are the factors which must be considered for selecting instruction length 6

What is VLIW architecture? Explain. 4

4. Write an assembly language notation to evaluate the following expression:

F 10

using a general register computer with two address instructions.

using an accumulator based computer with one address instruction.

using a stack organized computer with zero address instruction.

5. Derive a formula for speedup factor of a k-stage pipeline over an equivalent non-pipelined processor. How can the efficiency of this pipeline be evaluated? Why cannot the pipeline operate at the maximum theoretical rate? Explain. 10

6. Draw a pipeline configuration to perform the following arithmetic operation.

(Ai Bi) (Ci Di)

List the contents of all registers in the pipeline for i through 6. 10

7. Analyze the data dependence of the statements of the following program

S1 LOAD RA, M[100] RA M[100]

S2 LOAD RB, M[125]

S3 MULT RA, 3 RA* 3

S4 STORE RA M[120] RA

Also, draw the dependence graph for the same. 10

8. What is scoreboarding technique in a dynamically scheduled pipeline? Explain. 10

9. Discuss Flynn's taxonomy of parallel computer architecture. Also, discuss the relevance of each type. 10