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Recent questions tagged data-hazards

7 votes

1 answer

1

GO Classes Test Series 2024 | Mock GATE | Test 12 | Question: 49
Consider the following code fragment: Identify all data dependencies (potential data hazards) in the given code snippet within one loop iteration. Let the number of true data dependencies be $\mathrm{X}$ ... output dependencies be $\text{Z}$. What is $\mathrm{X}+2 \mathrm{Y}+3 \mathrm{Z}?$

GO Classes asked in CO and Architecture Jan 21

969 views

1 vote

1 answer

2

Applied Test Series
Consider the following sequence of instructions: LOAD R4, 0(R8) AND R1, R5, R2 OR R1, R1, R3 OR R2, R2, R7 ADD R3, R2, R1 STORE R3, 0(R8) Number of cycles required to complete the given sequence of instructions in a 5 stage (IF, ID, EX, Mem, WB) RISC processor with operand forwarding_____

LRU asked in CO and Architecture Jan 8, 2022

by LRU

552 views

1 vote

1 answer

3

Applied Test Series
Consider following assembly-language program: 1: MOV R3, R7 2: LOAD R8, (R3) 3: ADD R3, R3, 4 4: LOAD R9, (R3) 5: BNE R8, R9, L3 The sum of WAW, RAW, and WAR dependencies from the given code are_________

LRU asked in CO and Architecture Jan 8, 2022

by LRU

479 views

0 votes

1 answer

4

Applied Gate Test Series
How to solve this?

imkeshav asked in CO and Architecture Jan 6, 2022

728 views

1 vote

0 answers

5

applied gate mock 10
why option 3 is right AND FOLLOW RAW HOW?

jugnu1337 asked in CO and Architecture Dec 14, 2021

212 views

1 vote

0 answers

6

Data Hazards
B. C. D.

gate_forum asked in CO and Architecture Jan 12, 2019

259 views

1 vote

4 answers

7

Madeeasy- Types of Dependencies
Please clarify along with the names.

Markzuck asked in CO and Architecture Jan 9, 2019

1.3k views

0 votes

1 answer

8

UPPCL AE 2018:13
Which of the following statements is true? Write after Read $\text{(WAR)}$ hazard can be mitigated by data forwarding. Both $\text{WAW}$ and $\text{WAR}$ hazards can be mitigated by data forwarding. None of the above Write after Write $\text{(WAW)}$ hazard can be mitigated by data forwarding.

admin asked in CO and Architecture Jan 5, 2019

by admin

416 views

0 votes

0 answers

9

UPPCL 2018 AE
Which type of hazards mitigate by data forwarding war and waw both war only waw only none of above

pream sagar asked in CO and Architecture Jan 1, 2019

343 views

0 votes

0 answers

10

SELF DOUBT
PLEASE ANYONE REFER ANY VIDEO OF DATA HAZARDS OR SOME NOTES SOME LINK ...NOT GETTING ENOUGH EXPLANATION OF DATA HAZARD HERE . IF SOMEONE KNOWS THE CONCEPT THEN Consider the following Instruction sequence I1: ADD R1,R2,R1 I2: LW R2,0(R1) I3: LW ... 4 (D) 1 then plss explain this question solution step by step otherwise give the link ? and cases like with pipelining without pipelining

Deepanshu asked in CO and Architecture Dec 31, 2018

2.1k views

0 votes

1 answer

11

Avoiding pipeline Hazards
Please Confirm.

smsubham asked in CO and Architecture Dec 27, 2018

455 views

0 votes

0 answers

12

self_doubt
What is the difference between functional dependencies and data hazards? how do we calculate them both? I am really confused with these two terms and the calculations of number of functional dependencies and number of data hazards!

Shivam Kasat asked in CO and Architecture Dec 25, 2018

by Shivam Kasat

221 views

0 votes

0 answers

13

ME Test Series
How many WAR dependencies are present .

Shadan Karim asked in CO and Architecture Dec 25, 2018

by Shadan Karim

324 views

0 votes

0 answers

14

ME test series
2 and 3 2 and 2 2 and 1 1 and 3

nepobose asked in CO and Architecture Dec 23, 2018

567 views

0 votes

0 answers

15

#pipeline #datahazard
The first instruction is arithmetic nature while instruction is a branch which of the following can occur in pipeline implementation 1) RAW 2) WAR 3) WAW 4) RAR

Manan Shah asked in CO and Architecture Dec 20, 2018

229 views

0 votes

1 answer

16

Data Hazards
Find the data hazards(RAW,WAW,WAR) in the given instructions

Vishnathan asked in CO and Architecture Nov 17, 2018

951 views

0 votes

0 answers

17

Na462 asked in CO and Architecture Nov 14, 2018

by Na462

757 views

0 votes

2 answers

18

Sum of Data dependencies
$I_1 : MUL \ \ \ \ \ R_1, R_2, R_3$ // $R_1 \leftarrow R_2 \times R_3$ $I_2 : ADD \ \ \ \ \ R_4, R_4, R_1$ $I_3 : MUL \ \ \ \ \ R_1, R_5, R_6$ $I_4 : SUB \ \ \ \ \ R_4, R_4, R_1$ Sum of RAW, WAR and WAW dependencies is _____.

Mk Utkarsh asked in CO and Architecture Oct 23, 2018

751 views

2 votes

1 answer

19

Pipeline : Number of RAW dependencies
Consider the below instructions executed on a 5 stage(IF,ID,EX,MA,WB) RISC pipeline with operand forwarding. I1: ADD R0,R1,R2 (R0=R1+R2) I2: SUB R3,R0,R2 I3:MUL R4,R3,R0 I4:DIV R5,R4,R0 How many RAW dependencies?

Mk Utkarsh asked in CO and Architecture Oct 23, 2018

2.2k views

0 votes

1 answer

20

test series co
r1 ← r2 − r3 M[r1 + 100] ← r2 how many RBW AND WBW DEPENDENCY???

eyeamgj asked in CO and Architecture Oct 15, 2018

319 views

1 vote

2 answers

21

Ace Test Series: CO & Architecture - Pipelining & Hazards

pankaj_vir asked in CO and Architecture Mar 7, 2018

521 views

3 votes

2 answers

22

Pipeline hazards
R1 <- R1+R2 R2 <- R3*R4 R3 <- R4-R1 R2 <- R3+R4 Can someone point out hazards. Thanks :)

gauravkc asked in CO and Architecture Jan 24, 2018

1.1k views

3 votes

0 answers

23

#Data Hazards #Operand Forwarding #CO
Is there any difference in calculating data hazards and dependencies? Doubt 1:I've read that in data dependencies calculation we chose adjacent instructions only? IS THIS TRUE. Doubt 2:Calculation of RAW,WAR,WAW hazards include ... adjacent.IS THIS TRUE There are many sources which are confusing Please Explain how to calculate dependencies and hazards.

rasto mapp asked in CO and Architecture Jan 13, 2018

598 views

1 vote

0 answers

24

Data Dependencies and Hazards CO
I 1 : R 1 = 100 I 2 : R 1 = R 2 + R 4 I 3 : R 2 = R 4 + 25 I 4 : R 4 = R 1 + R 3 I 5 : R 1 = R 1 + 30 Calculate sum of (WAR, RAW and WAW) dependencies the above instructions. I'm getting 8 : RAW -2 WAW -3 WAR - 3 given is 6. RAW -0 WAW -3 WAR - 3 I4 - I2 and I5 - I2 are not RAW hazards ??

Ashwin Kulkarni asked in CO and Architecture Jan 9, 2018

by Ashwin Kulkarni

885 views

0 votes

0 answers

25

#Instruction-pipeline Data hazard between two consecutive memory access instruction
Although the following instructions do not make much sense but if such case occurs, is data forwarding from MA of I1 to MA of I2 allowed? Or will it result in some stall? Please add some reference, I couldn't find any yet. I1: Load A //A<-Mem[address] I2: Store Adress2, A // Mem[Address2] <- A

AskHerOut asked in CO and Architecture Dec 22, 2017

465 views

1 vote

1 answer

26

RAW, WAR, WAW hazards
J1: R1 = 100 J2: R1 = R2 + R4 J3: R2 = R4 + 25 J4: R4 = R1 + R3 J5: R1 = R1 + 30 Give the no of RAW, WAR and WAW hazards

Tuhin Dutta asked in CO and Architecture Dec 3, 2017

2.1k views

1 vote

1 answer

27

Pipeline
Give answer for question no. 12 please! provide detailed answer.

learner_geek asked in CO and Architecture Oct 15, 2017

by learner_geek

453 views

2 votes

0 answers

28

Hazard in Pipeline
I know this question is already asked, But here my doubt is different, I have seen many people calculating the RAW hazard without seeing the no of stages in the pipeline which is not correct. In the above question If we see clearly by keeping in the mind that no of ... 2 after the SUB ﬁnishes.

Shubhanshu asked in CO and Architecture Sep 28, 2017

1.1k views

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Recent questions tagged data-hazards