James Lux, P.E. Task Manager, SOMD Software Defined Radios Flight Communications Systems Section Jet Propulsion Laboratory 4800 Oak Grove Drive, Mail Stop 161-213 Pasadena, CA, 91109 +1(818)354-2075 phone +1(818)393-6875 fax
> -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of Lawrence Stewart > Sent: Monday, September 29, 2008 4:00 PM > To: Lombard, David N > Cc: Beowulf Mailing List; Lawrence Stewart > Subject: Re: [Beowulf] precise synchronization of system clocks > > > > > The IEEE-1588 "Precision Time Protocol" can provide such levels of > > global clock synchronization. > > > > That's the one I was trying to remember, but I didn't compose a good > query and couldn't find it. > > IIRC the NIC timestamps arriving packets right off the wire? Exactly.. We have > an on-chip logic analyzer > gadget that can do that, but the synchronization problem we have is > only to find one-time > offsets, so we didn't need to go this deep. > > -L > > _______________________________________________ > Beowulf mailing list, [email protected] > To change your subscription (digest mode or unsubscribe) > visit http://www.beowulf.org/mailman/listinfo/beowulf > _______________________________________________ Beowulf mailing list, [email protected] To change your subscription (digest mode or unsubscribe) visit http://www.beowulf.org/mailman/listinfo/beowulf
