[time-nuts] Google's Spanner uses GPS and atomic time

2012-10-02 Thread Anthony G. Atkielski
In case anyone here hasn't seen this article: http://www.wired.com/wiredenterprise/2012/09/google-spanner/all/ Google is using GPS and atomic time synchronization across its data centers to ensure database consistency in innovative ways. Apparently there's a paper out on the system now but I

Re: [time-nuts] Google's Spanner uses GPS and atomic time

2012-10-02 Thread J. Forster
Seems like a good reason to have LORAN-C or some other backup/sanity check. -John In case anyone here hasn't seen this article: http://www.wired.com/wiredenterprise/2012/09/google-spanner/all/ Google is using GPS and atomic time synchronization across its data centers to

Re: [time-nuts] Google's Spanner uses GPS and atomic time

2012-10-02 Thread Anthony G. Atkielski
John writes: Seems like a good reason to have LORAN-C or some other backup/sanity check. What LORAN? I thought the U.S. had shut down all LORAN transmissions in order to enhance the vulnerability of navigation systems in the U.S. (?). -- Anthony

Re: [time-nuts] Google's Spanner uses GPS and atomic time

2012-10-02 Thread J. Forster
The US, foolishly IMO, has killed LORAN-C and is killing WWVB. Hence my comment. Essentially, GPS is soon going to be the sole source of a standard of time interval. It is going to take a disaster of some kind to return sanity. -John === John writes: Seems like a good reason to

Re: [time-nuts] Google's Spanner uses GPS and atomic time

2012-10-02 Thread paul swed
And yes thank god we are cutting funding to those pesky satellites. Seems we can't afford them anymore. But fortunately other countries are filling our gap slow but surely. There was an article this month in GNSS about the funding cuts. Regards Paul WB8TSL On Tue, Oct 2, 2012 at 9:11 PM, J.