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Groups > comp.os.linux.embedded > #577
| From | Lusotec <nomail@nomail.not> |
|---|---|
| Newsgroups | comp.os.linux.advocacy, comp.os.linux.embedded, uk.comp.os.linux |
| Subject | Re: Google set to make its own energy efficient ARM Server chip |
| Followup-To | comp.os.linux.advocacy |
| Date | 2013-12-17 03:30 +0000 |
| Organization | A noiseless patient Spider |
| Message-ID | <l8ogfu$1bl$1@dont-email.me> (permalink) |
| References | (4 earlier) <03sru.770233$i75.479117@fx03.iad> <q4zru.490$rx5.425@fx05.am4> <E4Hru.610246$rL6.270787@fx14.iad> <xGKru.25855$fY2.18253@fx04.am4> <uDMru.15$DB4.7@fx14.iad> |
Cross-posted to 3 groups.
Followups directed to: comp.os.linux.advocacy
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 unruh wrote: > 7 wrote: >> unruh wrote: >>> Not sure either what you mean by "digital versions of quantum >>> computers". >> >> Analog computers are different from digital computers. >> Digital versions of analogue computers can be made. >> >> Digital computers are different from quantum computers. >> Digital versions of quantum computers can be made. > > A quantum computer is not an analog computer. It uses bits to represent > numbers just like any other digitial computer does. That those bits can > be in a superpostion of states, or that they can be entangled with other > bits does not make it analog. > It is certainly true that a quantum computer working on a problem which > can be sped up by quantum computation, behaves differently from a > classical computer, but just as for classical digital computers, a > quantum computer has a few operations which are universal. Ie, any > quantum computation can be implimented by repeated application of that > minimal set of operations. > > The key feature as far as energy efficiency is concerned is that > quantum operations must in general be reversible which means that > intheory they require no energy to run. That is of course not true in > practice, but they need very very little energy to run. Current quantum computers function at very low temperatures. I'm using the word "function" liberally :). The energy needed for cooling makes it very energy inefficient. That said, it seems some progress has been recently made for preventing decoherence of qbits at room temperature. If this work is confirmed, it could open the door to very energy efficient high density data storage, maybe even some kind of long lived RAM that only needs to be refreshed every few minutes or more. Also, if this work can be extended to coherent quantum operations at room temperature then we may see in a few decades the integration of quantum co- processors or specialized cores in main stream CPU. General quantum CPUs are very unlikely in the the next several decades due to the complexity of programming such a beast for general computing. Even simple mathematical algorithms have been difficult to test in current quantum computer with few qbits. > Note that attempting to simulate quantum operations on a classical > digitial computer might be what you refer to, but that would be a > completely stupid thing to do, since the memory and time requirements > would be far greater than even any classical computer solving the > same problem-- it would offer no advantage at all. The only use I know for simulating quantum systems on non-quantum computers is physical simulations, particles, materials, or molecular simulations. Regards. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.10 (GNU/Linux) iF4EAREIAAYFAlKvxT8ACgkQGQjO2ccW76qfVgEAgfWQtjfoUAh+6qn8VpagWXS9 x31+RW9z0rADMJKitf4A/1Bsv9fxbvnSuLOIp3fvrY9sGwuAJKmIg/AChbglK4j+ =rMPd -----END PGP SIGNATURE-----
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Google set to make its own energy efficient ARM Server chip 7 <email_at_www_at_enemygadgets_dot_com@enemygadgets.com> - 2013-12-14 21:18 +0000
Re: Google set to make its own energy efficient ARM Server chip Grant Edwards <invalid@invalid.invalid> - 2013-12-14 22:52 +0000
Re: Google set to make its own energy efficient ARM Server chip 7 <email_at_www_at_enemygadgets_dot_com@enemygadgets.com> - 2013-12-14 23:38 +0000
Re: Google set to make its own energy efficient ARM Server chip Les Cargill <lcargill99@comcast.com> - 2013-12-14 18:16 -0600
Re: Google set to make its own energy efficient ARM Server chip Grant Edwards <invalid@invalid.invalid> - 2013-12-15 22:47 +0000
Re: Google set to make its own energy efficient ARM Server chip unruh <unruh@invalid.ca> - 2013-12-16 00:45 +0000
Re: Google set to make its own energy efficient ARM Server chip Grant Edwards <invalid@invalid.invalid> - 2013-12-16 02:08 +0000
Re: Google set to make its own energy efficient ARM Server chip unruh <unruh@invalid.ca> - 2013-12-16 03:30 +0000
Re: Google set to make its own energy efficient ARM Server chip 7 <email_at_www_at_enemygadgets_dot_com@enemygadgets.com> - 2013-12-16 08:38 +0000
Re: Google set to make its own energy efficient ARM Server chip Grant Edwards <invalid@invalid.invalid> - 2013-12-16 15:16 +0000
Re: Google set to make its own energy efficient ARM Server chip 7 <email_at_www_at_enemygadgets_dot_com@enemygadgets.com> - 2013-12-16 08:38 +0000
Re: Google set to make its own energy efficient ARM Server chip 7 <email_at_www_at_enemygadgets_dot_com@enemygadgets.com> - 2013-12-16 08:38 +0000
Re: Google set to make its own energy efficient ARM Server chip 7 <email_at_www_at_enemygadgets_dot_com@enemygadgets.com> - 2013-12-16 08:38 +0000
Re: Google set to make its own energy efficient ARM Server chip unruh <unruh@invalid.ca> - 2013-12-16 17:51 +0000
Re: Google set to make its own energy efficient ARM Server chip 7 <email_at_www_at_enemygadgets_dot_com@enemygadgets.com> - 2013-12-16 21:56 +0000
Re: Google set to make its own energy efficient ARM Server chip unruh <unruh@invalid.ca> - 2013-12-17 00:10 +0000
Re: Google set to make its own energy efficient ARM Server chip Lusotec <nomail@nomail.not> - 2013-12-17 03:30 +0000
Re: Google set to make its own energy efficient ARM Server chip unruh <unruh@invalid.ca> - 2013-12-17 03:48 +0000
Re: Google set to make its own energy efficient ARM Server chip 7 <email_at_www_at_enemygadgets_dot_com@enemygadgets.com> - 2013-12-17 18:44 +0000
Re: Google set to make its own energy efficient ARM Server chip unruh <unruh@invalid.ca> - 2013-12-17 19:42 +0000
Re: Google set to make its own energy efficient ARM Server chip Thad Floryan <thad@thadlabs.com> - 2013-12-17 12:23 -0800
Re: Google set to make its own energy efficient ARM Server chip unruh <unruh@invalid.ca> - 2013-12-18 00:19 +0000
Re: Google set to make its own energy efficient ARM Server chip unruh <unruh@invalid.ca> - 2013-12-18 00:34 +0000
Re: Google set to make its own energy efficient ARM Server chip David Brown <david.brown@hesbynett.no> - 2013-12-18 11:06 +0100
Re: Google set to make its own energy efficient ARM Server chip Frank Miles <fpm@u.washington.edu> - 2013-12-18 16:18 +0000
Re: Google set to make its own energy efficient ARM Server chip 7 <email_at_www_at_enemygadgets_dot_com@enemygadgets.com> - 2013-12-18 19:19 +0000
Re: Google set to make its own energy efficient ARM Server chip David Brown <david.brown@hesbynett.no> - 2013-12-19 10:05 +0100
Re: Google set to make its own energy efficient ARM Server chip 7 <email_at_www_at_enemygadgets_dot_com@enemygadgets.com> - 2013-12-19 20:45 +0000
Re: Google set to make its own energy efficient ARM Server chip David Brown <david.brown@hesbynett.no> - 2013-12-20 09:40 +0100
Re: Google set to make its own energy efficient ARM Server chip 7 <email_at_www_at_enemygadgets_dot_com@enemygadgets.com> - 2013-12-20 20:55 +0000
Re: Google set to make its own energy efficient ARM Server chip David Brown <david.brown@hesbynett.no> - 2013-12-19 09:54 +0100
Re: Google set to make its own energy efficient ARM Server chip unruh <unruh@invalid.ca> - 2013-12-17 19:40 +0000
Re: Google set to make its own energy efficient ARM Server chip Les Cargill <lcargill99@comcast.com> - 2013-12-14 18:15 -0600
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