3. (13 Points] Datapath Connections for instruction LW (.e., load a word into memory) 2/6 ADD 400 Et rd 13:21 120:14) 1115:111 :) Instruction ec2 PCS ADOR RD Instruction Memory West gost Operation KN1 HNWN RDI Register File WD ALUZ mediate ofes [15:0) RDZ RegWrite 04 | Mom Waite ADOR Mertos Data PN Memory RD WD Memed ED (3.1) (5 Points) Time spent on each component is given below: Sign-Extended: 50 ps Register read/write: 150 ps ALU: 200 ps Memory read/write: 400 ps What is the execution time of instruction LW? (3.2) (8 Points) An engineer invented a technique, which reduces the time spent in accessing registers from 150 ps down to 40 ps. We assume time consumed on all the other component are not affected by this technique. What is the execution time of instruction LW when the new technique is applied? 4. [20 Points] Your company has just bought a new Intel dual-core processor (i.e., two cores). Your task is to optimize your software running this new processor by testing two. Please note that the resource requirements of the two applications are different. Specifically, the first application needs 80% of the resources; the second application only requires 20% of the resources. (4.1) (5 Points) Given that 40% of the first application is parallelizable on the dual-core (i.e., speedup of 2), how much speedup would you achieve with that application if run in isolation? 3/6