'Delayed branch' diaporamas de présentation

Review of Computer Architecture

Review of Computer Architecture. -- Instruction sets, pipelines and caches. Review, #1. Designing to Last through Trends Capacity Speed Logic 2x in 3 years 2x in 3 years DRAM 4x in 3 years 2x in 10 years Disk 4x in 3 years 2x in 10 years

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Review of Pipelines, Performance, Caches, and Virtual Memory(!)

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Lecture 5 Section A.8 Branch Hazards and Dynamic Scheduling via scoreboarding

CS 203A Advanced Computer Architecture. Lecture 5 Section A.8 Branch Hazards and Dynamic Scheduling via scoreboarding. Instructor: L.N. Bhuyan. Control Hazards. Branch problem: branches are resolved in EX stage ? 2 cycles penalty on taken branches

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CENG 450 Computer Systems and Architecture Lecture 7

CENG 450 Computer Systems and Architecture Lecture 7. Amirali Baniasadi amirali@ece.uvic.ca. This Lecture. Pipelining ILP Scheduling. Limits to pipelining. Hazards: circumstances that would cause incorrect execution if next instruction were launched

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CEG3420 Computer Design Introduction to Pipelining

CEG3420 Computer Design Introduction to Pipelining. A. B. C. D. Recap: Sequential Laundry. 2 AM. 12. 6 PM. 1. 8. 7. 11. 10. 9. Sequential laundry takes 8 hours for 4 loads If they learned pipelining, how long would laundry take?. 30. 30. 30. 30. 30. 30. 30. 30. 30. 30.

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CENG 450 Computer Systems and Architecture Lecture 7

CENG 450 Computer Systems and Architecture Lecture 7. Amirali Baniasadi amirali@ece.uvic.ca. This Lecture. Pipelining ILP Scheduling. Limits to pipelining. Hazards: circumstances that would cause incorrect execution if next instruction were launched

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William Stallings Computer Organization and Architecture 6 th Edition

William Stallings Computer Organization and Architecture 6 th Edition. Chapter 13 Reduced Instruction Set Computers. Major Advances in Computers(1). The family concept IBM System/360 1964 DEC PDP-8 Separates architecture from implementation Microporgrammed control unit

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Pipelining Control Hazards and Deeper pipelines

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CS 61C: Great Ideas in Computer Architecture Control and Pipelining, Part II

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EE (CE) 6304 Computer Architecture Lecture #5 (9/6/17)

EE (CE) 6304 Computer Architecture Lecture #5 (9/6/17). Yiorgos Makris Professor Department of Electrical Engineering University of Texas at Dallas. Course Web-site: http://www.utdallas.edu/~gxm112130/EE6304FA16. Reg. Reg. Reg. Reg. Reg. Reg. Reg. Reg. Reg. Reg. ALU. ALU. ALU.

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EE (CE) 6304 Computer Architecture Lecture #5 (9/6/17)

EE (CE) 6304 Computer Architecture Lecture #5 (9/6/17). Yiorgos Makris Professor Department of Electrical Engineering University of Texas at Dallas. Course Web-site: http://www.utdallas.edu/~gxm112130/EE6304FA16. Reg. Reg. Reg. Reg. Reg. Reg. Reg. Reg. Reg. Reg. ALU. ALU. ALU.

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Pipelining Part 2

Pipelining Part 2. CS448. Data Hazards. Data hazards occur when the pipeline changes the order of read/write accesses to operands that differs from the normal sequential order Example: ADD R1 , R2, R3 SUB R4, R1 , R5 AND R6, R1 , R7 OR R8, R1 , R9 XOR R10, R1 , R11

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Delayed Branch

Delayed Branch. All problems solved? NO, what will happen if...... b loop add $4 $6 $1 .. . loop sub. Add. B loop. Zero ext. =. =. Branch logic. 0. A. ALU. 4. B. +. =. =. 31. +. Sgn/Ze extend. sub. Add. B loop. Zero ext. =. =. Branch logic. 0. A. ALU. 4.

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Pipelining

Pipelining. Andreas Klappenecker CPSC321 Computer Architecture. Basic Idea. Time Required for Load Word. Assume that a lw instruction needs 2 ns for instruction fetch 1 ns for register read 2 ns for ALU operation 2 ns for data access 1 ns for register write Total time = 8 ns .

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Lecture 13: Pipelining

Lecture 13: Pipelining. Computer Engineering 585 Fall 2001. Delayed Branch (Summary). Where to get instructions to fill branch delay slot? Before branch instruction From the target address: only valuable when branch taken From fall through: only valuable when branch not taken

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