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=-1.0 required=5.0 tests=MAILING_LIST_MULTI autolearn=ham autolearn_force=no version=3.4.4 Received: (qmail 9017 invoked from network); 2 Feb 2023 20:37:50 -0000 Received: from minnie.tuhs.org (50.116.15.146) by inbox.vuxu.org with ESMTPUTF8; 2 Feb 2023 20:37:50 -0000 Received: from minnie.tuhs.org (localhost [IPv6:::1]) by minnie.tuhs.org (Postfix) with ESMTP id 0B8CE4120A; Fri, 3 Feb 2023 06:37:49 +1000 (AEST) Received: from nsstlmta18p.bpe.bigpond.com (nsstlmta18p.bpe.bigpond.com [203.38.21.18]) by minnie.tuhs.org (Postfix) with ESMTPS id 18015411E1 for ; Fri, 3 Feb 2023 06:37:41 +1000 (AEST) Received: from smtp.telstra.com ([10.10.24.4]) by nsstlfep18p-svc.bpe.nexus.telstra.com.au with ESMTP id <20230202203738.RZIN6513.nsstlfep18p-svc.bpe.nexus.telstra.com.au@smtp.telstra.com> for ; Fri, 3 Feb 2023 07:37:38 +1100 X-RG-Spam: Unknown X-RazorGate-Vade: gggruggvucftvghtrhhoucdtuddrgedvhedrudefkedgudefiecutefuodetggdotefrodftvfcurfhrohhfihhlvgemucfupfevtfgpvffgnffuvffttedpqfgfvfenuceurghilhhouhhtmecugedttdenucenucfjughrpeffhffvuffkfgggtgesthdttddttdervdenucfhrhhomhepffgrvhgvucfjohhrshhfrghllhcuoegurghvvgeshhhorhhsfhgrlhhlrdhorhhgqeenucggtffrrghtthgvrhhnpeevveevvefhvdelvdeiteelueekudfhhfevgeehhfejgfefvdekueekveeuhfevfeenucfkphepuddutddrudeguddrudelfedrvdeffeenucevlhhushhtvghrufhiiigvpedtnecurfgrrhgrmhephhgvlhhopegrnhgvuhhrihhnrdhhohhrshhfrghllhdrohhrghdpihhnvghtpeduuddtrddugedurdduleefrddvfeefpdhmrghilhhfrhhomhepuggrvhgvsehhohhrshhfrghllhdrohhrghdpnhgspghrtghpthhtohepuddprhgtphhtthhopegtohhffhesthhuhhhsrdhorhhgpdhrvghvkffrpegtphgvqdduuddtqddugeduqdduleefqddvfeefrdhnshifrdgrshhprdhtvghlshhtrhgrrdhnvghtpdhgvghokffrpeetfgdpoffvtefjohhsthepnhhsshhtlhhrghduudhpqdhsvhgt X-RazorGate-Vade-Verdict: clean 0 X-RazorGate-Vade-Classification: clean X-RG-VS-CLASS: clean Received: from aneurin.horsfall.org (110.141.193.233) by smtp.telstra.com (5.8.812) id 6392A87C0A6B81E6 for coff@tuhs.org; Fri, 3 Feb 2023 07:37:38 +1100 Received: from aneurin.horsfall.org (localhost [127.0.0.1]) by aneurin.horsfall.org (8.15.2/8.15.2) with ESMTP id 312KbZlU091846 for ; Fri, 3 Feb 2023 07:37:35 +1100 (EST) (envelope-from dave@horsfall.org) Received: from localhost (dave@localhost) by aneurin.horsfall.org (8.15.2/8.15.2/Submit) with ESMTP id 312KbYOn091843 for ; Fri, 3 Feb 2023 07:37:35 +1100 (EST) (envelope-from dave@horsfall.org) X-Authentication-Warning: aneurin.horsfall.org: dave owned process doing -bs Date: Fri, 3 Feb 2023 07:37:34 +1100 (EST) From: Dave Horsfall To: Computer Old Farts Followers Message-ID: User-Agent: Alpine 2.21.9999 (BSF 287 2018-06-16) X-GPG-Public-Key: http://www.horsfall.org/gpgkey.pub X-GPG-Fingerprint: 05B4 FFBC 0218 B438 66E0 587B EF46 7357 EF5E F58B X-Home-Page: http://www.horsfall.org/ X-Witty-Saying: "chmod 666 the_mode_of_the_beast" MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Message-ID-Hash: V37QO7NFFT3RT4OTCDNUZ4IJ6UNU4V7G X-Message-ID-Hash: V37QO7NFFT3RT4OTCDNUZ4IJ6UNU4V7G X-MailFrom: dave@horsfall.org X-Mailman-Rule-Misses: dmarc-mitigation; no-senders; approved; emergency; loop; banned-address; member-moderation; nonmember-moderation; administrivia; implicit-dest; max-recipients; max-size; news-moderation; no-subject; digests; suspicious-header X-Mailman-Version: 3.3.6b1 Precedence: list Subject: [COFF] Early programs that were run more than once? List-Id: Computer Old Farts Forum Archived-At: List-Archive: List-Help: List-Owner: List-Post: List-Subscribe: List-Unsubscribe: That was the title of a sidebar in Australia's "Silicon Chip" electronics magazine this month, and referred to the alleged practice of running scientific and engineering programs many times to ensure consistent output, as hardware error checks weren't the best in those days (bit-flips due to electrical noise etc). Anyway, the mag is seeking corroboration on this (credit given where due, of course); I find it a bit hard to believe that machines capable of running complex programs did not have e.g. parity checking... Thanks. -- Dave