How does Fujitsu's digital annealer work?

How does Fujitsu's digital annealer work? Ask Question Asked 3 years, 8 months ago Modified 6 days ago Viewed 1k times 1 I have read Fujitsu's white paper for a brief introduction to their device: http://marketing.us.fujitsu.com/rs/407-MTR-501/images/quantum-inspired-computing.pdf As far as I know, Fujitsu's hardware is not quantum-mechanical. They call it a digital annealer inspired by quantum phenomenon. I'm curious about what it actually is, and what kind of algorithm it runs. Is it a classical computer or some specialized annealing device? If the former, what kind of annealing algorithm does it use? As for the latter, I'm not sure whether that kind of device actually exists. (Quantum annealers like the ones D-wave has belongs to this category, but Fujitsu doesn't have those.) classical-computingannealingquantum-inspired Share Improve this question Follow asked Jun 22, 2022 at 1:31 CW Lino 355 5 bronze badges Add a comment 1 Answer Sorted by: Highest score (default) Date modified (newest first) Date created (oldest first) 2 The first google search gives the research paper by Aramon et al. According to the article: The Fujitsu Digital Annealer is designed to solve fully connected quadratic unconstrained binary optimization (QUBO) problems. It is implemented on application-specific CMOS hardware and currently solves problems of up to 1,024 variables. The Digital Annealer's algorithm is currently based on simulated annealing; however, it differs from it in its utilization of an efficient parallel-trial scheme and a dynamic escape mechanism. In addition, the Digital Annealer exploits the massive parallelization that custom application-specific CMOS hardware allows. So basically, it is specialized hardware that runs a variant of the simulated annealing algorithm. The algorithm is explicitly given in the article as well. Share Improve this answer Follow edited Jun 22, 2022 at 4:14 Mark Spinelli 16.4k3 3 gold badges 28 28 silver badges 88 88 bronze badges answered Jun 22, 2022 at 3:46 MonteNero 3,4228 8 silver badges 27 27 bronze badges Add a comment Your Answer Sign up or log in Sign up using Google Sign up using Email and Password Post as a guest Name Email Required, but never shown Post Your Answer By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy. Start asking to get answers Find the answer to your question by asking. Ask question Explore related questions classical-computingannealingquantum-inspired See similar questions with these tags. 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