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In this paper we discuss the potential of emerging spintorque devices forcomputing applications. Recent proposals for spinbased computing schemes may bedifferentiated as all-spin vs. hybrid, programmable vs. fixed, and, Boolean vs.non-Boolean. All spin logic-styles may offer high area-density due to smallform-factor of nano-magnetic devices. However, circuit and system-level designtechniques need to be explored that leverage the specific spin-devicecharacteristics to achieve energy-efficiency, performance and reliabilitycomparable to those of CMOS. The non-volatility of nanomagnets can be exploitedin the design of energy and area-efficient programmable logic. In suchlogic-styles, spin-devices may play the dual-role of computing as well asmemory-elements that provide field-programmability. Spin-based threshold logicdesign is presented as an example (dynamic resisitve threshold logic andmagnetic threshold logic). Emerging spintronic phenomena may lead to ultralow-voltage, current-mode, spin-torque switches that can offer attractive computingcapabilities, beyond digital switches. Such devices may be suitable fornon-Boolean data-processing applications which involve analog processing.Integration of such spin-torque devices with charge-based devices like CMOS andresistive memory can lead to highly energy-efficient information processinghardware for applications like pattern-matching, neuromorphic-computing,image-processing and data-conversion. Towards the end, we discuss thepossibility of applying emerging spin-torque switches in the design ofenergy-efficient global interconnects, for future chip multiprocessors.

Exploring Boolean and Non-Boolean Computing Applications of Spin Torque Devices