Path: csiph.com!eternal-september.org!feeder.eternal-september.org!news.eternal-september.org!.POSTED!not-for-mail From: Ben Bacarisse Newsgroups: comp.programming,alt.algebra.help Subject: Re: on cut edges and bonds, graph theory Date: Thu, 21 Sep 2017 21:24:23 +0100 Organization: A noiseless patient Spider Lines: 30 Message-ID: <87fubfdclk.fsf@bsb.me.uk> References: <86wp4w3sz5.fsf@toledo.com> <87shfjpzgs.fsf@bsb.me.uk> <878thaq4ff.fsf@bsb.me.uk> <87efr17b3g.fsf@bsb.me.uk> <87fubgghsi.fsf@bsb.me.uk> <86tvzwdiyo.fsf@toledo.com> Mime-Version: 1.0 Content-Type: text/plain Injection-Info: reader02.eternal-september.org; posting-host="82804c28d500e09ff9d07e64dec1e385"; logging-data="2408"; mail-complaints-to="abuse@eternal-september.org"; posting-account="U2FsdGVkX19lWeoNFR0OEBszRk9lEnWzmM8dRZD2d0g=" Cancel-Lock: sha1:iYFVkUado7iSjgqRwNl/QYpJW2I= sha1:TEaABFGz46UTY7gXujXdDum8qf0= Xref: csiph.com comp.programming:8023 alt.algebra.help:5011 Daniel Bastos writes: > Ben Bacarisse writes: > > [...] > >>> New and improved is never as good. >> >> Oh, OK. That's not been my experience. My new and improved CPU is way >> better than the one in the DG Nova I first used, and it does not need >> cooling water like the IBM 370 either. I much prefer to type into Emacs >> than punch cards or tapes. I love my delete key -- re-punching cards >> was a royal pain, despite the handy DUP key. In fact, I don't know how >> we could even be having the conversation on the kind of machine I >> started on. > > You used a computer that needed cooling water? That's amazing! I > hadn't even heard of something like that. Which year were you using the > IBM 370, if I may ask? 1978. That was just submitting jobs remotely and I am guessing that the 370 was water cooled. The high-end ones were and this was at a major facility (Cambridge University). At the time I was actually coding for an IBM 360 locally and that one also needed water cooling. I remember the figure of 25 gallons an hour at 15 degrees but it was so long ago that I may just be making that up. I can't find any reference for the actual amount required. -- Ben.