[Discuss-gnuradio] Re: synchronizing sound cards in a cluster (fwd)

[Eugen Leitl]

---------- Forwarded message ----------
Date: Fri, 14 Mar 2003 10:41:03 -0600
From: Andrew A. Raines <address@hidden>
To: address@hidden
Subject: Re: synchronizing sound cards in a cluster

Jim Lux <address@hidden> writes:

> One can fairly easily synchronize to a millisecond over Ethernet,
> but this application needs sync to, at worst, 1 sample time (20
> microseconds) although order of a microsecond would be nice.

clockspeed[1] can alleviate clock drift on the order of nanoseconds
on Solaris and microseconds on Linux (i386 only).  The drift is
even stored in attoseconds, and it counts leap seconds correctly.

If you're interested, have a look at Frank Tegtmeyer's work[2] for
an elegant README-automation solution.

-Drew

Footnotes: 
[1]  http://cr.yp.to/clockspeed.html

[2]  http://fte.tegtmeyer.net/djbware/clockspeed_setup.html

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