How long will the following code take on a 5-stage MIPS pipeline with forwarding and appropriate NOPs? A. Fill out the pipeline and draw the forwarding path in the pipeline. B. How many cycles it takes to execute all three instructions? Program Execution Time Clock Cycle 1 1 Clock 1 Cycle 2 Clock Cycle 3 Clock Cycle 4 Clock Cycle 5 R5, R5, R7 R6, 100 (R7) sub R7, R6, R8 add 1w Clock Cycle 6 1 Clock Cycle 7 1 Clock Cycle 8 Clock Cycle 9

How long will the following code take on a 5-stage MIPS pipeline with forwarding and appropriate NOPs? A. Fill out the pipeline and draw the forwarding path in the pipeline. B. How many cycles it takes to execute all three instructions? Program Execution Time Clock Cycle 1 1 Clock 1 Cycle 2 Clock Cycle 3 Clock Cycle 4 Clock Cycle 5 R5, R5, R7 R6, 100 (R7) sub R7, R6, R8 add 1w Clock Cycle 6 1 Clock Cycle 7 1 Clock Cycle 8 Clock Cycle 9

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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Name 3 types of Pipeline Hazard conditions below: of b) Does a five ståge MIPS pipeline execution of the following sequence instructions generate a hazard? If yes, what type of hazard is it? HOW can you resolve it? sub $s0, St1, $t2 sub $t3, $s0, $t3 sub $t4, Ss0, St4
Question 5
1- How many segment we need to perform the arithmetic expression, show the content of register in pipeline. Ai * Bi / Ci +Di for i=1...4 2- After that compute the time required to complete operation, write the ratio of speedup of pipeline over equivalent non pipeline processing. Suppose: Tp=10ng, task=4
clock cycle at which the first of the instructions is fetched as clock cycle 1. Assume that if one instruction reads a register during the same clock cycle as another instruction is writing it, the new value will be read. Do not reorder the instructions. Instructions are fetched and executed exactly in the order given below, with the pipeline stalling if necessary.addi $s2, $s2, 1li $s6, 5add $s1, $s2, $s3move $s5, $s6lw $t1, 0($s5)
Consider the following assembly code: Instruction Description LOAD R1, M1 Read data from memory address M1 and store in R1. XOR R2, R1, R1 Logical Ex-OR between contents of R1 with R1 and store result in R2 BNEZ R2, Target1 Jump to Target if R2 is non-Zero ADD R7, R1, R5 Add contents of R1 and R5 and store to R7 AND R2, R7, R7 Logical Ex-OR between contents of R7 with R7 and store result in R2 Targetl: BEZ R2, Target2 Jump to Target if R2 is Zero LOAD R3, M2 LOAD R4, M3 ADD R10, R3, R4 Target2: ADD R10, R3, R4 STORE M4, R10 Save contents of R10 to memory address M4 END
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CPI stands for clock cycles per instruction. Speedup from pipelining = (Number of pipeline stages) / (Achieved CPI ). Assume a 5-stage pipeline. Assume that CPI = 1 when there are no pipeline stalls (the ideal case). Now assume that every branch instruction causes a 3 clock cycle stall in the pipeline. Assume that for the program being executed 30% of executed instructions are branch instructions. What speedup from pipelining is achieved by this program?
The following sequence of MIPS instructions is processed using a 5-stage pipeline, as discussed in class. What is the minimum number of clock cycles are required, from start to finish? Assume that, if necessary, only pipeline stalls (not data forwarding) can be used to prevent data hazards. lw $1,0($2) addi $3,$3,1 add $2,$1,$1 add $5,$4,$4
Consider the code below that runs in the five stage pipeline that does not handle any data hazard (no forwarding and no write/read register in the same cycle). Add NOP operations so that the code runs correctly. You may draw a time diagram to help you answer the question. ADDI X1, X2, #3 ADD X3, X1, X2 ADDI X4, X1, #13 ADD X5, X3, X2
Write a MIPS Assembly program function to calculate the factorial of an input number. Analyze the program for the number A (calculated above) and compute the Execution time in a pipelined MIPS at 2.4GHz Here the value of A=3
Show how the instructions below would progress through the 5 stage in order pipeline Iw St5, 0(St4) add Sa0, St5, St5 sub Sa1, St5, $s2 - Assume full forwarding wherever possible. - There is no fast register file ! Read and Write to same same register need to occur in different clock cycles - Assume also the presence of a hazard detection unit in the ID stage as covered in lectures This is how you will map the pipeline diagram table to your answer: Each instruction in the pipeline stage will be shown by the letter for the pipeline stage followed by the clock cycle. That is, F2 means that in the 2nd clock cycle, the instruction is in the F stage. X7 means that in the 7th clock cycle, the instruction is in the X stage. Accordingly, the table representation for the first instruction (be), in the code sequence has been done for you Iw $t5, 0($t4):F1,D2,X3,M4,W5 This statement above previously had an errata in it which has since been corrected. Please be very careful in ensuring there are…