Date: Mon, 29 Sep 1997 23:22:58 -0700 (PDT) From: Tom <tom@sdf.com> To: "Michael L. VanLoon -- HeadCandy.com" <michaelv@MindBender.serv.net> Cc: Tony Kimball <Anthony.Kimball@east.sun.com>, freebsd-chat@freefall.freebsd.org Subject: Re: supermicro p6sns/p6sas Message-ID: <Pine.BSF.3.95q.970929231719.5433A-100000@misery.sdf.com> In-Reply-To: <199709300503.WAA12579@MindBender.serv.net>
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On Mon, 29 Sep 1997, Michael L. VanLoon -- HeadCandy.com wrote: > [...] > >> means loss of life/limb/property. Wasted time is one form of partial > >> loss of life, and certainly having to type 'make world' again is a > >> waste of time, but a floating-point error in an embedded system could > > > Waste of time? A little more than that. A make world would NOT EVER > >complete on such a CPU. DG has demonstrated this bug, and described it to > >the list. He has a K6 that will not complete a make world ever. At the > >time, he could not even return it. > > It's important to remember that sig-11's and other such failures > during make worlds are not the problem, but the symptom that there are > serious problems. > > The build errors show up there because it's highly visible. What you > don't see for every visible failure are potentially incorrect opcodes > being written to object files, potential mis-fetched VM pages > resulting in panics or crashes, possibly only after seriously > corrupting a database or your filesystem, or other such creeping- > death problems. Yes, I was just thinking about that. If gcc is randomly dying on older K6 processors, is it actually producing correct object code when it doesn't crash? AMD and Cyrix scare me. Intel's true competition is DEC, Motorola/IBM, Sparc, and MIPS. > ----------------------------------------------------------------------------- > Michael L. VanLoon michaelv@MindBender.serv.net > Contract software development for Windows NT, Windows 95 and Unix. > Windows NT and Unix server development in C++ and C. > > --< Free your mind and your machine -- NetBSD free un*x >-- > NetBSD working ports: 386+PC, Mac 68k, Amiga, Atari 68k, HP300, Sun3, > Sun4/4c/4m, DEC MIPS, DEC Alpha, PC532, VAX, MVME68k, arm32... > NetBSD ports in progress: PICA, others... > ----------------------------------------------------------------------------- > >
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