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  1. 11 de jul. de 2019 · Pipeline Diagrams Unpipelined OP1 OP2 OP3 Time Cannot start new operation until the previous one completes. 3-Way Pipelined A B C A C A B C B OP1 OP2 OP3 Time Up to 3 operations in process simultaneously. CS429 Slideset 14: 13 Pipeline I. Operating a Pipeline A B C A B C A B C OP1 OP2 OP3 Clock 0 120 240 360 480 600 At time 300. Comb ...

  2. OP1 OP2 OP3 Time A B C A B C A B C OP1 OP2 OP3 . 13 Operating a Pipeline Time OP1 OP2 A OP3 A B C B C A B C 0 120 240 360 480 640 Clock R e gg ClockClock Comb. logic logic A B R e g Comb.Comb. logic logic B R e g Comb. logic C 100 ps 20 ps 100 ps 20 ps 100 ps 20 ps 239241 g ...

  3. www.cs.utexas.edu › ~fussell › coursesSystems I Pipelining I

    OP1 OP2 OP3 Time A B C A B C A B C OP1 OP2 OP3. 11 Operating a Pipeline Time OP1 OP2 OP3 A B C A B C A B C 0 120 240 360 480 640 Clock R e g Clock Comb. logic A R e g Comb. logic B R e g Comb. logic C ... As try to deepen pipeline, overhead of loading registers becomes more significant

  4. Pipeline Diagrams. Unpipelined. Cannot start new operation until previous one completes. 3-Way Pipelined. Up to 3 operations in process simultaneously. Time OP1 OP2 OP3 Time A B C A B C A B C OP1 OP2 OP3. Page 4. 7. Operating a Pipeline. Time OP1 OP2 OP3 A B C A B C A B C. 0 120 240 360 480 640.

  5. OP1 OP2 OP3 A B C A B C A B C –9 – CS:APP3e Limitations: Register Overhead As try to deepen pipeline, overhead of loading registers becomes more significant Percentage of clock cycle spent loading register: 1-stage pipeline: 6.25% 3-stage pipeline: 16.67% 6-stage pipeline: 28.57%

  6. Combinational logic R e g 300 ps 20 ps Clock Delay = 320 ps Throughput = 3.12 GOPS. – 5 –! 3-Way Pipelined Version! System! Divide combinational logic into 3 blocks of 100 ps each! Can begin new operation as soon as previous one passes through stage A.! " Begin new operation every 120 ps! Overall latency increases!

  7. OP1 OP2 OP3 Time A B C A B C A B C OP1 OP2 OP3 – 8 – CS:APP2e Operating a Pipeline Time OP1 A OP2 A OP3 A B C B C B C 0 120 240 360 480 640 Clock R R e g Clock Comb. logic A R e g Comb. logic Bg R ee g Comb.Comb. logic C 100 ps 20 ps 100 ps100 ps 20 ps 100 ps 20 ps 239 Comb. ...

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