Advanced Computer Architecture--- IIIrd Internal

1) Define amdahl's law and calculate overall speedup using amdahl's law. Given that a new CPU, which is 20 times faster than the original CPU, on computation, is additionally introduced, the original CPU is busy with computations 80% of the time and an i/o time is 80.

2) Define the dependability?

Assume a disk subsystem with following components and an MTTF.

-> 10 disks, each rated at 1,000,000 hours MTTF

-> 1 SCSI controller, 500,000 hours MTTF

->1 power supply, 200,000 hours MTTF

-> 1 fan, 200,000 hours MTTF

-> 1 SCSI cable 1,000,000 hours MTTF

Find the sum of Failure rate of the computer system and the overall MTTF of the system?

3) What are the trends in cost? Find the no of dies in a 300mm(30 cm) wafer for dies that is 1.5 cm on a side?

4) What are the trends in power technology? Find the die yield for dies that are 1.5 cm on a side and 1.0 cm on other side. Assume the defect density is 0.4 /cm² and α is 4.

5) Explain the control hazard under the different clock cycles?

6) Explain the data dependencies and draw the graph for trends in technology?

7) Explain the addressing modes?

8) Explain dynamic branch prediction? And explain correlating branch predictors?

9) Explain overcoming data hazards with dynamic scheduling?

10) Draw a diagram of the basic structure of a MIPS floating point unit using Tomasulo’s algorithm with a few points explanation.