Path: ...!weretis.net!feeder8.news.weretis.net!eternal-september.org!feeder3.eternal-september.org!news.eternal-september.org!.POSTED!not-for-mail From: "Don" Newsgroups: sci.electronics.design Subject: Re: Memristor cross bar arrays for faster AI neural nets and math? Date: Thu, 28 Mar 2024 18:17:43 -0000 (UTC) Organization: A noiseless patient Spider Lines: 53 Message-ID: <20240328b@crcomp.net> References: <20240318a@crcomp.net> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Injection-Date: Thu, 28 Mar 2024 18:17:43 +0100 (CET) Injection-Info: dont-email.me; posting-host="3050ffc070dcddeb70c2086c763c3c33"; logging-data="3932443"; mail-complaints-to="abuse@eternal-september.org"; posting-account="U2FsdGVkX1+Ceh7GOes7Hq1BZOTTXESS" Cancel-Lock: sha1:90xtVLE7gEa8K1B72LHmj1jTsBY= Bytes: 3120 Jeroen Belleman wrote: > Don wrote: >> Jan Panteltje wrote: >>> Jeroen Belleman wrote: >>>> Jan Panteltje wrote: >>>>> Source: >>>>> University of Massachusetts Amherst >>>>> Summary: >>>>> A team of engineers has proven that their analog computing device, called a >>>>> memristor, can complete complex, scientific >>>>> computing tasks while bypassing the limitations of digital computing. >>>>> https://www.sciencedaily.com/releases/2024/03/240314145325.htm >>>>> >>>>> bit like our neural nets... >>>> >>>> I have an issue with calling a memristor a 'computing device'. If >>> >>> If you can do matrix computations with it why not? >>> quote from that llnk: >>> "When organized into a crossbar array, >>> such a memristive circuit does analog computing by using physical laws >>> in a massively parallel fashion, substantially accelerating matrix operation, >>> the most frequently used but very power-hungry computation in neural networks >>> " >>> >>>> If you accept that, then so are capacitors and inductors! >>> >>> Well you could store analog info in CMOS too, even in capacitors. >>> Inductors? not so sure, not so easy for a long time? >> >> Does core memory qualify as inductors? > > Memory cores have a very wide hysteresis. You need a fair bit of > current to magnetize them, and when they do, they go straight into > saturation and stay there when the current is removed. You have to > reverse the current to magnetize them the other way and again will > flip the whole way. > > That's why they were useful as memory. As inductors, not so much. Well said! This take on the Two-Capacitor Paradox ironically illustrates intrisic inductance: Learning from the Two-Capacitor Paradox: Do Capacitance and Inductance Exist? Danke, -- Don, KB7RPU, https://www.qsl.net/kb7rpu There was a young lady named Bright Whose speed was far faster than light; She set out one day In a relative way And returned on the previous night.