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Article #2016Re: CPUs at 30 Ghz in the year 2005
From: Ed Seedhouse
Date: Sun, 27 May 2001 15:42
Date: Sun, 27 May 2001 15:42
32 lines
2844 bytes
2844 bytes
albert@spenarnc.xs4all.nl (Albert van der Horst) wrote: >>Assuming you could search one position per nanosecond, and assuming you >>could search for 1 trillion years, you only have searched 10^23 positions. >>You have a _long_ way to go. At one position per picosecond, you are >>up to 10^26 positions. >Suggestive reasoning, but indeed quantum computing has changed all >this. With 2 It hasn't changed *anything* yet, it has the possibility of changing some things sometime. > log(10^50) >say a few hundred quantum bits, you can keep track of your >10^50 positions. Well, no you can't, actually. You might be able to do the analysis, but where do you store the solution? After all a solution that you can't write down and refer to later isn't much use. Even assuming you can store a position in one 8 bit word, and assuming we have terabyte drives on our computer we still need 10^50/10^12=10^48 hard drives. 1,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000 hard drives, vastly more than the number of atoms that make up our planet. Ed Seedhouse "Seedhouse" on ICC CFC Rating: 2050
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X-Google-Language: ENGLISH,ASCII-7-bit X-Google-Thread: f52e8,8df9b986ca792ae5 X-Google-Attributes: gidf52e8,public X-Google-Thread: 1073e8,8df9b986ca792ae5 X-Google-Attributes: gid1073e8,public X-Google-Thread: 10d71d,8df9b986ca792ae5 X-Google-Attributes: gid10d71d,public X-Google-Thread: 110df2,8df9b986ca792ae5 X-Google-Attributes: gid110df2,public X-Google-Thread: 1035ff,8df9b986ca792ae5 X-Google-Attributes: gid1035ff,public X-Google-ArrivalTime: 2001-05-27 08:42:17 PST Path: arc1-ca.pugleaf.net!archiver1.google.com!newsfeed.google.com!newsfeed.stanford.edu!newsfeed.berkeley.edu!ucberkeley!hammer.uoregon.edu!enews.sgi.com!newshub2.rdc1.sfba.home.com!news.home.com!news1.gvcl1.bc.home.com.POSTED!not-for-mail From: Ed Seedhouse <eseedhouse@home.com> Newsgroups: gnu.chess,rec.games.chess.analysis,rec.games.chess.computer,rec.games.chess.misc,rec.games.chess.politics Subject: Re: CPUs at 30 Ghz in the year 2005 Reply-To: eseedhouse@home.com Message-ID: <rh72htgsuijasg4v896vunncrfed43q2oc@4ax.com> References: <PnWM6.120400$2_.38189249@news3.rdc1.on.home.com> <9e1g6o$4fs$1@oprah.cc.utexas.edu> <tg8s7fdkj8ln68@corp.supernews.com> <9e1vue$uil$1@juniper.cis.uab.edu> <GDxypn.L53.1.spenarn@spenarnc.xs4all.nl> X-Newsreader: Forte Agent 1.8/32.548 MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Lines: 32 Date: Sun, 27 May 2001 15:42:13 GMT NNTP-Posting-Host: 24.67.216.167 X-Complaints-To: abuse@home.net X-Trace: news1.gvcl1.bc.home.com 990978133 24.67.216.167 (Sun, 27 May 2001 08:42:13 PDT) NNTP-Posting-Date: Sun, 27 May 2001 08:42:13 PDT Organization: Excite@Home - The Leader in Broadband http://home.com/faster