[Beowulf] precise synchronization of system clocks

Lawrence Stewart larry.stewart at sicortex.com
Mon Sep 29 16:00:27 PDT 2008

> 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?   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.


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