mersenneforum.org  

Go Back   mersenneforum.org > Extra Stuff > Science & Technology

Reply
 
Thread Tools
Old 2018-10-04, 23:15   #1
aurashift
 
Jan 2015

111111012 Posts
Default Quantum something or other

https://m.slashdot.org/story/346744
aurashift is offline   Reply With Quote
Old 2018-10-05, 08:38   #2
0PolarBearsHere
 
0PolarBearsHere's Avatar
 
Oct 2015

2×7×19 Posts
Default

I tried to sign up, but they don't like Australians apparently.
0PolarBearsHere is offline   Reply With Quote
Old 2018-10-05, 09:08   #3
retina
Undefined
 
retina's Avatar
 
"The unspeakable one"
Jun 2006
My evil lair

22·5·313 Posts
Default

I don't see practical any use for those D-Wave things ATM.

Perhaps one day when they (or anyone) have some real quantum computers, and can break kilobit numbers, then they'll have something interesting.
retina is online now   Reply With Quote
Old 2018-10-05, 15:36   #4
CRGreathouse
 
CRGreathouse's Avatar
 
Aug 2006

3·1,993 Posts
Default

Quote:
Originally Posted by retina View Post
I don't see practical any use for those D-Wave things ATM.
Me either.

Quote:
Originally Posted by retina View Post
Perhaps one day when they (or anyone) have some real quantum computers, and can break kilobit numbers, then they'll have something interesting.
If all D-Wave makes are annealers, I don't foresee them being useful. No one knows how to make problems that quantum annealers solve faster than classical computers. That sharply contrasts with the case of general quantum computation.
CRGreathouse is offline   Reply With Quote
Old 2018-10-05, 16:07   #5
SELROC
 

2·3·487 Posts
Default

Quote:
Originally Posted by CRGreathouse View Post
Me either.



If all D-Wave makes are annealers, I don't foresee them being useful. No one knows how to make problems that quantum annealers solve faster than classical computers. That sharply contrasts with the case of general quantum computation.

https://physicsworld.com/a/intel-unv...nducting-chip/


49 qubits is really a few qubits, we need millions to make a viable quantum processor.
  Reply With Quote
Old 2018-10-06, 02:55   #6
LaurV
Romulan Interpreter
 
LaurV's Avatar
 
Jun 2011
Thailand

100110000110012 Posts
Default

Well, we can start googling about vacuum tubes and read few wiki articles about the computers of the 30's which had like 500 vacuum tubes and each 3 or 4 or 5 of them made one single bit of memory.... Then look now, 80 year later, us arguing here about terabytes of RAM...

Last fiddled with by LaurV on 2018-10-06 at 03:03 Reason: link
LaurV is offline   Reply With Quote
Old 2018-10-06, 04:56   #7
VBCurtis
 
VBCurtis's Avatar
 
"Curtis"
Feb 2005
Riverside, CA

24·3·103 Posts
Default

Quote:
Originally Posted by LaurV View Post
Well, we can start googling about vacuum tubes and read few wiki articles about the computers of the 30's which had like 500 vacuum tubes and each 3 or 4 or 5 of them made one single bit of memory.... Then look now, 80 year later, us arguing here about terabytes of RAM...
You heard it here first: LaurV says we should get quantum punch cards ready for the coming revolution.
VBCurtis is offline   Reply With Quote
Old 2018-10-06, 08:39   #8
LaurV
Romulan Interpreter
 
LaurV's Avatar
 
Jun 2011
Thailand

975310 Posts
Default

Haha, a good point!


(and to make things right, I read those articles myself, you know, it is catchy and after I posted them, I took a tour by myself... actually, those computers had memories with capacitors, and the tubes were not used for memory bits, but for processing them).
LaurV is offline   Reply With Quote
Old 2018-10-06, 15:03   #9
GP2
 
GP2's Avatar
 
Sep 2003

5×11×47 Posts
Default

We can laugh at those primitive old first-generation computers, but remember that five Mersenne primes were discovered in a bit more than eight months, in 1952.

Last fiddled with by GP2 on 2018-10-06 at 15:03
GP2 is offline   Reply With Quote
Old 2018-10-06, 23:15   #10
Dr Sardonicus
 
Dr Sardonicus's Avatar
 
Feb 2017
Nowhere

22·3·401 Posts
Default

Quote:
Originally Posted by GP2 View Post
We can laugh at those primitive old first-generation computers, but remember that five Mersenne primes were discovered in a bit more than eight months, in 1952.
According to an answer at quora,
Quote:
The Apollo Guidance Computer (AGC) was a built of 4100 ICs, each of which was a a 3 input RTL NOR gete for a total of approx 12,300 transistors. It ran at 43 KHz and could complete an instruction in 24 ms. for a total performance of about 41.6 Instructions per Second.
Dr Sardonicus is offline   Reply With Quote
Old 2018-10-06, 23:23   #11
science_man_88
 
science_man_88's Avatar
 
"Forget I exist"
Jul 2009
Dumbassville

26×131 Posts
Default

Quote:
Originally Posted by Dr Sardonicus View Post
According to an answer at quora,
aka 1032 cycles per instruction.
science_man_88 is offline   Reply With Quote
Reply

Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
Want to play with IBM's quantum computer? tServo Hardware 6 2016-05-06 15:52
Quantum peppermint? jasong jasong 8 2015-11-02 02:17
Quantum Computer mathemajikian Hardware 24 2009-02-03 04:38
Quantum Algorithms? ShiningArcanine Lounge 4 2007-12-16 12:11
quantum computer sagan_fan Math 4 2003-03-26 05:01

All times are UTC. The time now is 17:52.


Sun Sep 19 17:52:31 UTC 2021 up 58 days, 12:21, 0 users, load averages: 0.89, 0.99, 1.17

Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2021, Jelsoft Enterprises Ltd.

This forum has received and complied with 0 (zero) government requests for information.

Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation.
A copy of the license is included in the FAQ.