Spintronic Ising machine delivers sub-nanosecond spin updates for chip-design optimization
Researchers at Beihang University, Suzhou Inston Technology and Empyrean Technology have developed a spintronic Ising machine capable of solving combinatorial optimization problems relevant to chip design, including global routing and wiring-layer assignment.
Ising machines are physics-inspired computing systems that represent decision variables as “spins,” each taking one of two states, and search for the lowest-energy combination to solve optimization problems. While such machines can be built on quantum, optical or electronic platforms, their speed and scalability are typically limited by the physical mechanisms governing spin dynamics. The new system is built instead on magnetoresistive random-access memory (MRAM), using the voltage-controlled magnetic anisotropy effect across 96,000 CMOS-integrated spin elements to achieve low write currents and spin-update speeds of 0.3 to 1 nanosecond, at an energy cost of under 40 femtojoules per spin.
Source: https://www.spintronics-info.com/spintronic-ising-machine-delivers-sub-nanosecond-spin-updates-chip-design
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