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Exploring Magnetic Quantum Dot Cellular Automata Challenges and Benefits

Delve into the cutting-edge MQCA technology. Discover its advantages in reliability, speed, and energy efficiency. Uncover key questions on clocking, suitable architectures, externally controlled inputs, and integration with storage. Examine the unique challenges faced in clocking complexity and architecture design. Explore the potential integration of processing with magnetic storage for enhanced efficiency and performance.

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Exploring Magnetic Quantum Dot Cellular Automata Challenges and Benefits

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  1. Emerging Technologies of Computation Montek Singh COMP790-084 Sep 8, 2011

  2. Today: Magnetic Quantum Dot Cellular Automata (MQCA) • Previous class: • Basics of magnetism • Nanomagnets and their coupling • TODAY: • Challenges and Benefits • reliability and yield • speed • energy • Open questions • clocking? • suitable architectures • externally controlled inputs? • integration with storage?

  3. Reliability and yield • Yield only 25%!

  4. Speed • Individual gates can function at THz speeds • Clocking limits operation to 100 MHz or so

  5. Energy • Gates extremely energy-efficient • dissipation below 1 eV per switching event • 10^10 gates would dissipate ~0.1W power • assuming 100 MHz operation • Another experiment indicates at least 100x energy benefit • Clocking dissipates more energy

  6. Challenge: Clocking Need complex multiphase clocking

  7. Challenge: Clocking • Questions • how many phases • what phase relationships

  8. Question: Suitable Architectures? • Architectural problems: • “layout=timing” problem • how to arrange to maintain data coherence? • how to feed back data values? • can we have a “real data clock” signal as well?

  9. Question: providing inputs • How to provide external inputs? • so far, experiments only provide constants!

  10. Question: integrating w/ storage • Can we combine processing with magnetic storage? • smart disks! • smart magnetic RAMs (MRAMs)!

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