From mboxrd@z Thu Jan 1 00:00:00 1970 X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on inbox.vuxu.org X-Spam-Level: X-Spam-Status: No, score=-1.1 required=5.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,FREEMAIL_FROM,MAILING_LIST_MULTI,RCVD_IN_DNSWL_NONE autolearn=ham autolearn_force=no version=3.4.4 Received: (qmail 30962 invoked from network); 15 Aug 2020 17:44:41 -0000 Received: from minnie.tuhs.org (45.79.103.53) by inbox.vuxu.org with ESMTPUTF8; 15 Aug 2020 17:44:41 -0000 Received: by minnie.tuhs.org (Postfix, from userid 112) id EC5499B6BB; Sun, 16 Aug 2020 03:44:33 +1000 (AEST) Received: from minnie.tuhs.org (localhost [127.0.0.1]) by minnie.tuhs.org (Postfix) with ESMTP id 352549B5EC; Sun, 16 Aug 2020 03:44:11 +1000 (AEST) Authentication-Results: minnie.tuhs.org; dkim=pass (2048-bit key; unprotected) header.d=gmail.com header.i=@gmail.com header.b="SGLHjDSI"; dkim-atps=neutral Received: by minnie.tuhs.org (Postfix, from userid 112) id A811B9B5EC; Sun, 16 Aug 2020 03:44:08 +1000 (AEST) Received: from mail-vs1-f44.google.com (mail-vs1-f44.google.com [209.85.217.44]) by minnie.tuhs.org (Postfix) with ESMTPS id BB0EB9B5D7 for ; Sun, 16 Aug 2020 03:44:07 +1000 (AEST) Received: by mail-vs1-f44.google.com with SMTP id p8so6235381vsm.12 for ; Sat, 15 Aug 2020 10:44:07 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:in-reply-to:references:from:date:message-id:subject:to :cc; bh=1iXowg+OY8PILxDGfDhEpr3LPzB4t0UkjnqUh6W18wA=; b=SGLHjDSIc6JWvsb1GczPXIuGVSombGFoq5qpOjN8SjjPUfzEUFjb56SjCufphOUM1k nR5lp1K7ukCnG/FZVefXPhGCqGFlnDu2TC+daQegY9+NnQkqmnK2l7YUNGjJIYkm6qKt bnLY1veECFGjxOUR0Fjqib0HzNQuQYxo4PX9Owx5BA3gvWh7REWBxFR359ChP1jX6Nn6 Ua8yl7Y4LDEAYkZ1sNb0Rwipok6yrxEHdDDWLXVhLRHDBEWuQIboOCiUoUwCeuAYQ0yR zklRYDhylPZta5r6QOH/4xfotnwPSTWUIw3xACyG1F6o/saGYmSrTi9Sjcz9EXZolsYI pGog== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:in-reply-to:references:from:date :message-id:subject:to:cc; bh=1iXowg+OY8PILxDGfDhEpr3LPzB4t0UkjnqUh6W18wA=; b=U/ej3C5Y93bjffW/Hvp7V05rrew38aG5VytaQUZvpPWTvX1DzDn+J9KgFTNHToiW01 UKhB7YYSJRi1swtkeLtQpsNtGKMrCapG8B1/L8VYX+HxeluoUW4KGASt+DJeZCpN8O0V 5r2SgNITKCsHCEhSRoJwUtd2QM9ty1A8GCVIXSoYt+KWsWu3w9oNfxjJHf1s88jONunr 38fO3QNSheAb8m6RsEHQAXEPcwlIsekNLRBaatv5sgK2jQKld1TTMdgEXqHhkddWa927 lYJRcZwrJMIlQWj4l2HZvRY31h1kWJtAL/cYwL8aGkmKaXHgc3wSqd0vfpOcCQxePQsR OUng== X-Gm-Message-State: AOAM5323mOZdRhhNopRugzO77WucEjNTwaJ2VrHcH/xxdIlWM68f0+ui QgPHoAYRI6luaoBpONUymuVm9Bn1Xu5+X8zwWts= X-Google-Smtp-Source: ABdhPJwGcEFFsE21+UFagJtafvwrvSEs+SsVR2vXpykzcLdgup6tIgq0pm8shkZK52NS8obo/k+j6d0H5deQFOLAgTY= X-Received: by 2002:a67:dd06:: with SMTP id y6mr4695191vsj.101.1597513446418; Sat, 15 Aug 2020 10:44:06 -0700 (PDT) MIME-Version: 1.0 Received: by 2002:ab0:48e9:0:0:0:0:0 with HTTP; Sat, 15 Aug 2020 10:44:05 -0700 (PDT) In-Reply-To: References: <202008141739.07EHdn2U1381389@darkstar.fourwinds.com> <4F69D0BB-C6C8-443C-A5A2-0F0C1E5578B0@cfcl.com> <20200815012003.GQ32735@mcvoy.com> From: Paul Winalski Date: Sat, 15 Aug 2020 13:44:05 -0400 Message-ID: To: Dave Horsfall Content-Type: text/plain; charset="UTF-8" Subject: Re: [TUHS] A/UX [was Linux is on-topic] X-BeenThere: tuhs@minnie.tuhs.org X-Mailman-Version: 2.1.26 Precedence: list List-Id: The Unix Heritage Society mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: The Eunuchs Hysterical Society Errors-To: tuhs-bounces@minnie.tuhs.org Sender: "TUHS" On 8/14/20, Dave Horsfall wrote: > > Wasn't it Grace Hopper who used to demonstrate a nanosecond by holding up > a foot of wire? Yes. She gave a talk back in 1982 at DEC's software engineering facility. She used the foot-long wire to illustrate a nanosecond and a big coil of wire for a microsecond. After the talk she handed out nanoseconds as souvenirs. I still have mine. Her talk was on the future of computing, and the point she was making with the nanosecond was that eventually there's a limit to Moore's Law., and any further computational speedups would require parallelism. She drew an analogy to the problem of a 19th century carter having to haul a load too heavy for one horse. The solution isn't to breed bigger horses--it's to hook up two of them. And here we are today, with multi-core processors. -Paul W.