Plz Discuss this assignment
Assignment No. 05
CS501: Advanced Computer Architecture
Total Marks: 20
Due Date: 03-07-13
Please read the following instructions carefully before assignment submission.
It should be clear that your assignment will not get any credit if:
The objective of this assignment is:
Suppose we have a benchmark that executes in 100 seconds of elapsed time, where 90 seconds is CPU time and the rest is I/O (Input/output) time. If CPU time improves by 50% per year for the next five years but I/O time doesn’t improve, how much faster will our program run at the end of five years?
You are required to calculate the CPU improved performance and improved elapsed time.
Question No 2: (4 marks)
Consider a 20 MIPS (Microprocessor without Interlocked Pipeline Stages) processor with several input devices attached to it, each running at 1000 characters per second. Assume that it takes 17 instructions to handle an interrupt. If the hardware interrupt response takes 1msec, what is the maximum number of devices that can be handled simultaneously?
NOTE: Theoretical answer will not be considered
Question No 3: (6 Marks)
If we want the lowest latency for an I/O operation to a single I/O device; while in terms of lowest impact on processor utilization from a single I/O device then what will be the orders/arrangements of Interrupt driven, DMA(Direct Memory Access) and polling in both scenarios? Explain reasons.
NOTE: Give answer within 3-5 lines. Otherwise answer will not be considered.
GOOD LUCK J
phr sy asimnt aa gi ktna khapaati hy VU
wht ll be the formula to calculate CPU time, I/O time, Elapsed Time???
see page 233 (example )for question no 1
2nd question is on page 312
sallam to all
don't worry, friends
i have solved Q#1 and 2
typing baqi he, kal apko solution mil jay ga,
but ap 3rd question ka solution hal kro,,,
Q#2 k liay jo example ha pg # 312 wo to same to same assignment ki trah ha to kia hmain b same to same wohe likhna ha ????
Zubair bro your calculation for Q # 1 is wrong.
50% increment in CPU time mean we have to multiply 1.5 with CPU time for each year while i search out formula for elapsed time that is,
Elapsed Time = CPU time + I/O time
abi me ne Q#1 ka solution send ni kya, kal kron, ga
rough me ne kr lya he, ap 3rd swal ka solution talash kro,
Consider a 20 MIPS (Microprocessor without Interlocked Pipeline Stages) processor
See this link to solve Q no. 1