Recent questions tagged data-dependences

0 votes

2 answers

1

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

asked Jan 9, 2019 in CO and Architecture by Markzuck Junior (675 points) | 130 views

0 votes

1 answer

2

Data forwarding in pipelining
Data forwarding is used to avoid which type of conflict?? (1) RAW (2) WAR (3) WAW (4) RAR

asked Jan 2, 2019 in CO and Architecture by Abhilash Mishra (115 points) | 191 views

0 votes

0 answers

3

Avoiding pipeline Hazards
Please Confirm.

asked Dec 27, 2018 in CO and Architecture by smsubham Boss (11.5k points) | 126 views

0 votes

1 answer

4

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

asked Nov 17, 2018 in CO and Architecture by Vishnathan Junior (513 points) | 164 views

0 votes

2 answers

5

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 _____.

asked Oct 23, 2018 in CO and Architecture by Mk Utkarsh Boss (36.5k points) | 99 views

+1 vote

1 answer

6

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?

asked Oct 23, 2018 in CO and Architecture by Mk Utkarsh Boss (36.5k points) | 312 views

0 votes

1 answer

7

Data dependancies
Anti- dependency will not ALWAYS create stall because we can use register renaming to remove stall. Please confirm below statement: Anti-dependency MAY create stall (True/False)

asked Sep 23, 2018 in CO and Architecture by Suneel Padala Junior (983 points) | 53 views

+3 votes

0 answers

8

MadeEasy Test Series: CO & Architecture - Data Dependency
I'm getting 6,1,2 but the answer given is 5,1,2

asked Jan 7, 2018 in CO and Architecture by charul Junior (823 points) | 118 views

+1 vote

0 answers

9

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

asked Dec 3, 2017 in CO and Architecture by Tuhin Dutta Boss (10.6k points) | 557 views

+3 votes

1 answer

10

WAR amd WAW dependency
R4 <- R1 + R4 R4 <- R2 + R4 R4 <- R3 + R5 Number of WAR and WAW dependencies?

asked Nov 4, 2017 in CO and Architecture by Rajesh R Active (1.5k points) | 174 views

0 votes

0 answers

11

Database #1NF
R(ABCDE) { A,BC,CD} are candidate key of relation R after 1 NF design which one is possible multi valued attributes before 1 NF design ???

asked Oct 27, 2017 in Databases by air1ankit Active (4.7k points) | 88 views

+3 votes

1 answer

12

Number of WAR
Number of WAR dependencies possible R1 <- R3 + R2 R3 <- R3 + R5 R3 <- R2 + R3 Is it 2 or 3?

asked Oct 26, 2017 in CO and Architecture by Rajesh R Active (1.5k points) | 94 views

0 votes

1 answer

13

Database
1- R(ABCD) FD'S ARE {AB->C ,C->D,D->EA ,DE->F,EF->B} 2-R(ABCD) FDS ARE { A->BC, CD->E, B->D,E-A} 3- R(ABCD) {AB-> CD,C->B,D->C} Find the candidate key ??? For above questions and please explain too.

asked Oct 17, 2017 in Databases by air1ankit Active (4.7k points) | 98 views

0 votes

0 answers

14

Calculate sum of (WAR, RAW and WAW) dependencies instructions.
Consider the following instructions. 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. (a) 10 (c) 6 (b) 12 (d) 8

asked Sep 28, 2017 in CO and Architecture by sunil sarode Active (1.2k points) | 613 views

+1 vote

0 answers

15

Random
If asked to count the number of RAW dependencies, do we consider only adjacent instructions or both adjacent and non-adjacent? Please explain in detail.

asked Sep 28, 2017 in CO and Architecture by Warlock lord Active (3.3k points) | 43 views

+1 vote

1 answer

16

database
For relation R=(L, M, N, O, P), the following dependencies hold: M→O, NO→P, P→Land L→MN R is decomposed into R1 = (L, M, N, P) and R2 = (M, O).What is the highest normal form satisfied by the above decomposition? My doubt is For R1 it is in 2NF and R2 it is in BCNF .But ,dependency preserving also violates .So whts the highest normal form ?

asked Jul 25, 2017 in Databases by set2018 Loyal (7.8k points) | 115 views

0 votes

0 answers

17

MadeEasy Subject Test: CO & Architecture - Data Dependencies
Shouldn't the number of dependencies be 5 (2 because of R1 & 3 because of R2).

asked Jan 27, 2017 in CO and Architecture by Raj Krishna (11 points) | 66 views

0 votes

1 answer

18

no of raw dependencies

asked Jan 19, 2017 in CO and Architecture by vaishali jhalani Active (4.8k points) | 130 views

0 votes

1 answer

19

MadeEasy Subject Test: CO & Architecture - Data Dependencies
I am getting 4 RAW dependencies here. Do we have to consider adjacent dependencies only?

asked Jan 17, 2017 in CO and Architecture by Ishita Gupta (231 points) | 108 views

+1 vote

1 answer

20

MadeEasy Subject Test: CO & Architecture - Data Dependencies
i am getting 4 ?? # plz check Answer is given 2

asked Jan 13, 2017 in CO and Architecture by Hradesh patel Loyal (6.5k points) | 112 views

+15 votes

2 answers

21

pipeline_hazard
no of RAW,WAR and WAW ?

asked Nov 23, 2016 in CO and Architecture by dd Veteran (57.2k points) | 3.2k views

+1 vote

0 answers

22

Why there is no RAW conflict in follwing code ? Explain
I1 : R1 = 100 I4 : R4 = R1 + R3 I5 : R1 = R1 + 30

asked Jan 20, 2016 in CO and Architecture by pC Boss (21.5k points) | 206 views

+1 vote

1 answer

23

pipelining - without operand forwarding

asked Dec 24, 2015 in CO and Architecture by Himanshu1 Boss (15.9k points) | 626 views

+8 votes

7 answers

24

number of WAR dependencies

asked Dec 8, 2015 in CO and Architecture by Deepak Sharma 1 (111 points) | 2.1k views

+2 votes

1 answer

25

RAW dependencies
ADD R1 , R2, R2; ADD R3, R2, R1; SUB R4, R1 , R5; ADD R3, R3, R4; FIND THE NUMBER OF READ AFTER WRITE(RAW) DEPENDENCIES IN THE ABOVE CODE.

asked Sep 27, 2015 in CO and Architecture by Umang Raman Boss (16.5k points) | 534 views

+1 vote

1 answer

26

In Operand Forwarding technique how does the next instruction is able to access the dependent operand which is calculated in the previous instruction in the same Cpu Cycle?

asked Apr 3, 2015 in CO and Architecture by Anurag_s Loyal (8.2k points) | 819 views

+33 votes

2 answers

27

GATE2015-3-47
Consider the following code sequence having five instructions from $I_1 \text{ to } I_5$ ... above statements is/are correct? Only S1 is true Only S2 is true Only S1 and S3 are true Only S2 and S3 are true

asked Feb 16, 2015 in CO and Architecture by jothee Veteran (105k points) | 4.6k views

+1 vote

1 answer

28

how many (RAW,WAR,WAW) dependencies exists in the following set of instruction R1<-R2+R3 R3<-R1-R2 R4<-R1+R3 R1<-R1*R3

asked Jan 26, 2015 in CO and Architecture by gate2015 (139 points) | 859 views

+22 votes

1 answer

29

GATE2007-IT-39
Data forwarding techniques can be used to speed up the operation in presence of data dependencies. Consider the following replacements of LHS with RHS. $R1→ Loc, Loc→ R2 \quad ≡ R1→ R2, R1 → Loc$ $R1→ Loc, Loc→ R2 \quad ≡ R1→ R2$ ... the RHS be the same as executing the LHS irrespective of the instructions that follow ? i and iii i and iv ii and iii ii and iv

asked Oct 30, 2014 in CO and Architecture by Ishrat Jahan Boss (16.3k points) | 2.2k views

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