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Recent questions tagged operand-forwarding

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Operand Forwarding [ Self Doubt }
I have a Self doubt question on Operand Forwarding . The data forwarded should be done in EX-EX stage or Mem-EX ? Which one to follow and when ?Using EX-EX we require less no. of cycles.
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Operand forwarding Made Easy Question
Consider 4-stage (IF, ID, EX, WB) pipeline used to execute the following code. All instructions are spending are spending one cycle on all the ... over without operand forwarding is?Can someone please explain by drawing the diagram?
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Split Phase | Self-Doubt | COA
How is split phase implemented in the hardware?For common register access between two stages, how is one clock cycle (Giving half a clock cycle to each ... to satisfy work for both stages?Any reference to standard resources will also help.
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COA Applied Course
Assume that we are using the classic MIPS five-stage(IF, ID, EX, MEM and WB) integer pipeling.
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GATE appliedroots test series
I have 3 doubts in the following solution:Doubt 1: In red colourWhile I1 is in the Memory-access stage, how can I4 fetch the instruction from the ... stage shouldn't happen for these instructions, correct?Solution as per my understanding:
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NPTEL Assignment Question
Consider the following code :Load R1,MLoad R2,NCMP R1,R2JGE ENDStore [300],R2END: Store [300],R1 Assume that M=30 and N=25. The above ... . Determine the number of clock cycles required for completion of execution of all instructions.
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Self Doubt
How many cycle required when pipelining and operand loading is used?R1<-R2+R3R4<-R1+M[100]Value at M[100]=7There are 5 phases:F->TO FETCHD->TO DECODE AND OPERAND READE->EXECUTEM->MEMORY ACCESSW->WRITE BACKEach phase takes 1Cycle .
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CAO ME
Consider a pipeline processor with 5 stages, Instruction Fetch (IF). Instruction Decode and Operand Fetch (ID), Operation performed (OP). Data memory ... to complete following sequence of instruction if operand forwarding is used ________.
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Test series
#PipeliningPlease clear my doubt.In a 5 stage pipelining (IF, ID, EX, MA, WB)there are 5 instruction given.Instruction 1 : R2 ← R0 + R1;Instruction ... of Next instruction will occur after EX phase of previous Instruction.It is correct ?
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Madeeasy COA Ques
Please explain.
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Data forwarding in pipelining
Data forwarding is used to avoid which type of conflict??(1) RAW(2) WAR(3) WAW(4) RAR
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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 ... Forwarding is to be applied in such generalized cases., Thanks in advance :)
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CO pipelining
consider a 4-stage pipeline (IF, ID, EX, WB) used to execute the following code. All the instructions are spending 1 cycle in all the stags but MUL takes 4 cycles. Div takes 3 ... : DIV r3 , r1 , r2I3: SUB r4, r3, r2I4: ADD r5, r4, r1
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bypassingw
what is difference between operand forwarding and bypassing?
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https://gateoverflow.in/753/gate2001-12?show=279851#c279851
doubt in this gate question- https://gateoverflow.in/753/gate2001-12?show=279851#c279851In instruction I3 how is it getting the value of r2 which is computed ... value of updated register values of write back stage??please resolve my doubt.
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general doubt on pipelining
we do forwarding from WB stage to EX or from WB to MEM stage??
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SELF DOUBT
PLEASE explain what is operand forwarding and how we are going to implement this in stages during execution of the instruction ???and also when to use it in ... got the link of operand forwarding from where should i hv done this plzz add
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Doubt clearing
Incase of operand forwarding in RISC pipeline with stages Instruction fetch (IF)Instruction decode (ID)Execute (EX)Memory Access (MA)Write Back (WB)If it is not ... should I by default take that it is forwarded from MA stage to ID stage?
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Test_CO1_Q35
Assume branch instruction occurs 15% of the time and are predicted as not taken, while in practice they are taken 40% of the time with a penalty of 3 cycles. With ... delay slots and branch hazards?A. 1.204B. 1.404C. 2.204D. 4.404
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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 ... achieve CPI = 1 by using Operand Forwarding ?A. 3B. 4C. 5D. 6
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self doubt
OPERAND FORWARDING work only when following cases 1) only when ALU(+,-,*,/) operation present2) In only RAW Hazard . Am i right?
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Operand Forwarding Doubt
I dont understand here:- Load R2,(R3)1. Fetch2. Decode: Rz <--- Address of R3 given in instruction3. Compute : NOP4. Memory Memory address <---[RZ] , read ... at Cycle 5 but there is extra stall at cycle 6 for Instruction j+1 why ??
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#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 ... sources which are confusingPlease Explain how to calculate dependencies and hazards.
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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 .
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Pipeline
Give answer for question no. 12please! provide detailed answer.
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Dealing with ALU-ALU forwarding
Consider two instruction sequences:a. SW R16,-100(R6) LW R4, 8(R16) ADD R5,R4,R4b. OR R1,R2,R3 OR R2,R1,R3 OR R1,R1,R2Add ... eliminate hazards if there is ALU-ALU forwarding only (no forwarding from the MEM to the EX stage).
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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 ... of instructions must be inserted to achieve CPI = 1 by using operand forwarding.
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Pipeline (With split phase- With forwarding)
A $5-$ stage pipelined processor has IF,ID,EX,MEM and WB . WB stage operation is divided into two parts. In the first part register write operation and in second part ... ,R_{4}$R_{1} <- R_{7} - R_{4}$The program execution time__________ns?
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