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1994 Fools: Re: SunHardware/1702: No fans after today!
Forwarded: Fri, 01 Apr 1994 15:28:38 -0800 Forwarded: email@example.com Return-Path: <firstname.lastname@example.org> Received: from aerospace.aero.org by antares.aero.org (4.1/AMS-1.0) id AA26571 for obrien; Fri, 1 Apr 94 15:17:08 PST Received: from antares.aero.org by aerospace.aero.org with SMTP (5.65c/6.0.GT) id AA08479 for email@example.com; Fri, 1 Apr 1994 15:17:05 -0800 Posted-Date: Fri, 1 Apr 1994 15:17:02 -0800 (PST) Message-Id: <199404012317.AA08479@aerospace.aero.org> Received: from waheguru.aero.org by antares.aero.org (4.1/AMS-1.0) id AA26564 for firstname.lastname@example.org; Fri, 1 Apr 94 15:17:04 PST Subject: Re: SunHardware/1702: No fans after today! To: email@example.com Date: Fri, 1 Apr 1994 15:17:02 -0800 (PST) From: "Michael Elkins" <firstname.lastname@example.org> Cc: email@example.com In-Reply-To: <9404012125.AA25173@antares.aero.org> from "firstname.lastname@example.org" at Apr 1, 94 01:25:03 pm Organization: Computer Systems Research Department, The Aerospace Corporation X-Mailer: ELM [version 2.4 PL23-aero1.0] Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Content-Length: 1142 email@example.com writes: > I just noticed on Usenet that there is a bit of a problem with > the fans on SparcStations. Apparently they're under the control of > the CPU microcode, for some reason that escapes me. Anyway, there's > a problem involving the Time-of-Year clock on the motherboards, which > all share common (Forth-language!) microcode, so that on all Sparc- > stations, at 16:00 PST today, which is midnight GMT, all of the fans > in all of the Sparcstations in existence will stop, and all of the > machines will cook. > > I dunno what we do about this - maybe just look at the calendar > and wait. Most people on the net agree that the way to defeat this rather odd behavior is to set up a batch job to forward past 4pm, sleep for several minutes, and then resync the time through our ntp server. On solarium: (solarium#46) at 1555 /usr/tmp/timefix job 3963 at Fri Apr 1 15:55:00 1994 (solarium#47) cat /usr/tmp/timefix #!/bin/csh -f rsh antares date 9404011605 pexec `listall sun` \; rsh %h rdate antares sleep 600 #antares will have synced at this point pexec `listall sun` \; rsh %h rdate antares