[Beowulf] Broadcast - not for HPC - or is it?

David N. Lombard dnlombar at ichips.intel.com
Fri Oct 8 16:23:14 EDT 2010


On Fri, Oct 08, 2010 at 05:40:28AM -0700, Matt Hurd wrote:
> 
> Know some guys here in Australia that are doing extremely accurate
> timing with wireless, not for timing's sake but to measure movement in
> dam walls and other infrastructure.  Kind of like a localised GPS.
> They have some very neat and accurate stuff.
> 
> Had a play with some radio foo and managed to get about 880ns + air
> time on bit to bit from tx to rx but haven't quite figured out how to
> get super low latency yet.  I think there may be a product in there
> for wireless PPS dissemination for accurate timing to a cluster like
> the guys do with the dam walls but I'm not sure if people really need
> much more than what ptp can already do.

Yes, PTP could enable fairly tight time sync across a cluster, if it
were used.

-- 
David N. Lombard, Intel, Irvine, CA
I do not speak for Intel Corporation; all comments are strictly my own.
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