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Recent questions tagged operand-forwarding
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1
Self Doubt
How many cycle required when pipelining and operand loading is used? R1<-R2+R3 R4<-R1+M[100] Value at M[100]=7 There are 5 phases: F->TO FETCH D->TO DECODE AND OPERAND READ E->EXECUTE M->MEMORY ACCESS W->WRITE BACK Each phase takes 1Cycle .
asked
Feb 18
in
CO and Architecture
by
DIYA BASU
(
233
points)
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84
views
pipelining
operand-forwarding
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
in
CO and Architecture
by
Abhilash Mishra
(
115
points)
|
160
views
pipelining
co-and-architecture
operand-forwarding
data-dependences
0
votes
0
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3
MadeEasy Test Series: CO & Architecture - Pipelining
here why to take stall at the highlighted cell as its OPERAND FORWARDING and unless mentioned its EX-EX and its being followed without stall also, please clarify how to understand where Operand Forwarding is to be applied in such generalized cases., Thanks in advance :)
asked
Dec 25, 2018
in
CO and Architecture
by
Markzuck
Junior
(
667
points)
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196
views
co-and-architecture
pipelining
made-easy-test-series
operand-forwarding
+1
vote
0
answers
4
https://gateoverflow.in/753/gate2001-12?show=279851#c279851
doubt in this gate question- https://gateoverflow.in/753/gate2001-12?show=279851#c279851 In instruction I3 how is it getting the value of r2 which is computed in I1 instruction?? Can memory access stage read the value of updated register values of write back stage?? please resolve my doubt.
asked
Dec 18, 2018
in
CO and Architecture
by
sushmita
Boss
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17.3k
points)
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82
views
co-and-architecture
pipelining
operand-forwarding
0
votes
0
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5
general doubt on pipelining
we do forwarding from WB stage to EX or from WB to MEM stage??
asked
Dec 18, 2018
in
CO and Architecture
by
sushmita
Boss
(
17.3k
points)
|
69
views
computer-architecture
pipelining
operand-forwarding
0
votes
0
answers
6
MadeEasy Test Series: CO & Architecture - Pipelining
The following sequence of instructions is executed in basic 5 stage pipeline ( F D E M W). Assume data dependency is resolved by Operand Forwarding. Load instruction output present at 4th stage and ALU instruction output is at third stage. Assume each stage ... must be inserted to achieve CPI = 1 by using Operand Forwarding ? A. 3 B. 4 C. 5 D. 6
asked
Oct 13, 2018
in
CO and Architecture
by
Na462
Loyal
(
6.9k
points)
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168
views
co-and-architecture
pipelining
operand-forwarding
made-easy-test-series
0
votes
0
answers
7
Operand Forwarding Doubt
I dont understand here:- Load R2,(R3) 1. Fetch 2. Decode: Rz <--- Address of R3 given in instruction 3. Compute : NOP 4. Memory Memory address <---[RZ] , read memory, Ry <---MemData 5. R2 <--- [Ry] If i wrote above right then R2 is available at Cycle 5 but there is extra stall at cycle 6 for Instruction j+1 why ??
asked
Sep 3, 2018
in
CO and Architecture
by
Na462
Loyal
(
6.9k
points)
|
145
views
pipelining
co-and-architecture
operand-forwarding
+2
votes
0
answers
8
#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 all ... adjacent.IS THIS TRUE There are many sources which are confusing Please Explain how to calculate dependencies and hazards.
asked
Jan 13, 2018
in
CO and Architecture
by
Deepak Mokili
(
217
points)
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131
views
co-and-architecture
pipelining
data-hazards
hazards
operand-forwarding
+1
vote
1
answer
9
Doubt in Pipelining Terminology
In pipelining questions we have "If operand forwarding is there " and "If operand forwarding is not there " Please explain this difference and how to draw the chart for both the cases .
asked
Dec 10, 2017
in
CO and Architecture
by
Parshu gate
Active
(
3.1k
points)
|
95
views
pipelining
co-and-architecture
operand-forwarding
+1
vote
1
answer
10
Pipeline
Give answer for question no. 12 please! provide detailed answer.
asked
Oct 15, 2017
in
CO and Architecture
by
learner_geek
Active
(
3.2k
points)
|
194
views
co-and-architecture
pipelining
operand-forwarding
data-hazards
+2
votes
0
answers
11
Dealing with ALU-ALU forwarding
Consider two instruction sequences: a. SW R16,-100(R6) LW R4, 8(R16) ADD R5,R4,R4 b. OR R1,R2,R3 OR R2,R1,R3 OR R1,R1,R2 Add NOP instructions to this code to eliminate hazards if there is ALU-ALU forwarding only (no forwarding from the MEM to the EX stage).
asked
Jun 26, 2017
in
CO and Architecture
by
GateAspirant999
Active
(
2.5k
points)
|
505
views
co-and-architecture
pipelining
operand-forwarding
+1
vote
1
answer
12
Pipeline
The following sequence of instruction is executed in a basic 5 stage pipelined processor (S1, S2, S3, S4, S5). Assume that data dependency present in the program is resolved by operand forwarding techniques. Load instruction output present in 4th stage ALU instruction output ... What is the number of instructions must be inserted to achieve CPI = 1 by using operand forwarding.
asked
Feb 4, 2017
in
CO and Architecture
by
srestha
Veteran
(
117k
points)
|
312
views
co-and-architecture
pipelining
operand-forwarding
0
votes
1
answer
13
Pipeline
asked
Jan 29, 2017
in
CO and Architecture
by
monty
Junior
(
843
points)
|
72
views
co-and-architecture
operand-forwarding
+1
vote
1
answer
14
pipeline bypassing
A 5 stage pipelined processor has instruction fetch (IF), operand fetch (OF). Instruction decode (ID), perform operation (PO) and Write operand (WO) stages. The IF, ID, OF and WO stages takes 1 clock cycle each for any instruction. The PO ... number of clock cycles needed to execute the following sequence of instruction where operand forwarding from WO to PO and PO to OF is used
asked
Jan 25, 2017
in
CO and Architecture
by
Pankaj Joshi
Active
(
2.6k
points)
|
447
views
operand-forwarding
co-and-architecture
pipelining
+12
votes
1
answer
15
Operand forwarding in pipeline
A $5$ stage pipelined processor has the following stages: $IF$ : instruction fetch $ID$ : instruction decode $EX$ : execute $MA$ : memory access $WB$ ... No. of cycles needed to execute these instructions using operand forwarding?
asked
Jan 8, 2017
in
CO and Architecture
by
dd
Veteran
(
57k
points)
|
4.8k
views
pipelining
co-and-architecture
operand-forwarding
+1
vote
1
answer
16
no data forwarding
Consider the following sequence of instructions executed on the five-stage pipelined processor: I1: lw $1, 40($6) I2: add $2, $3, $1 I3: add $1, $2, $6 I4: sw $2, 20($4) I5 : and $1, $1, $4 Assuming there is no forwarding, calculate the number of clock cycles needed to execute above program ?
asked
Nov 2, 2016
in
CO and Architecture
by
Akriti sood
Boss
(
12.2k
points)
|
230
views
pipelining
operand-forwarding
co-and-architecture
0
votes
1
answer
17
MadeEasy Test Series: CO & Architecture - Pipelining
they have not given the number of cycles taken by ADD/LOAD..i have taken as 1..correct if i am wrong The following sequence of instruction is executed in a basic 5 stage pipelined processor (S1, S2, S3, S4, S5). Assume ... available in 3rd stage. Assume each stage take 1 cycle. What is the number of cycles are saved by using operand forwarding.
asked
Jan 28, 2016
in
CO and Architecture
by
sourav.
Boss
(
16.1k
points)
|
224
views
made-easy-test-series
co-and-architecture
pipelining
operand-forwarding
0
votes
2
answers
18
MadeEasy Test Series: CO & Architecture - Pipelining
please check the answer...
asked
Jan 22, 2016
in
CO and Architecture
by
sourav.
Boss
(
16.1k
points)
|
451
views
made-easy-test-series
co-and-architecture
pipelining
operand-forwarding
+2
votes
0
answers
19
MadeEasy Test Series: CO & Architecture - Pipelining
The following sequence of instruction is executed in a basic 5 stage pipelined processor (S1, S2, S3, S4, S5). Assume that data dependency present in the program is resolved by operand forwarding techniques. Load instruction output ... cycle. What is the number of instructions must be inserted to achieve CPI = 1 by using operand forwarding.
asked
Jan 19, 2016
in
CO and Architecture
by
khushtak
Loyal
(
7k
points)
|
290
views
made-easy-test-series
co-and-architecture
pipelining
operand-forwarding
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