Question

6. What is the difference between a Direct map cache and Set associative cache. If we are looking for block #26, block 32 and block #10 in an 8 way set associative and 4 block direct mapped cache. Where can we find these blocks. (Show your work) 7. What are the differences between SRAM, DRAM, SDRAM, who implements SRAM and SDRAM 8. What is a DIMM, So-Dimm and DDR, list different versions of DDR, what are the differences between those versions & are they backwards compatible when installed on the motherboard. 9. List and describe 4 differences between SSD and HDD. 10. What is the northbridge, Bios, southbridge, bus, motherboard and what are the factors of a motherboard 11. Calculate the AMAT for a system with the following properties: (Show your work) • L1S hits in 1 cycle with local hit rate 50% • L28 hits in 10 cycles with local hit rate 75% • L35 hits in 100 cycles with local hit rate 95% • Main memory always hits in 1000 cycles 12. Use CPU Execution time formula to solve the following: The program executes 5 Million Instructions with a mix of instruction types. The CPU has a frequency of 2GHz. (Show your work) Instruction Frequency CPI Instruction ALU 50% Load 20% بين | | Store 20% Branches 10% ابيا

Answer 1

Coche Mit rate 50/ 75% 957 L2 Hit Time tegnes locques 100 gues main memory Hit best Time = 1000 cycles AMATE I+ 0.5[10+ 0.25[100 + 0.05X1000] = It 0.5[10+ 0.25(100+50)] =1+ 0.5 [10+ $x150] =1+ [10+ 37.5) » It £ X 4705 Z ytos 1+ 23.75 = 24.75 yay number of instructions = 5x106 clock frequeny = 24m2 = instruction 2X10 Hz - frequency ALO Load store Branches 50% 20% 20% 10.1. ク sale Average CPI -> 0-5X3 + 0-2X5 + 0.2X4+ 0.1%3 105 + 100+ 0.8+0.3 » 3.6 Total clocks = 5x108x3-6 = 188106 clocks execution time = 18x106 = lgx03 second 2x109 19 millisecond