[ardour-users] New Ardour Release - 0.99.1

Kevin Cosgrove kevinc at doink.com
Tue Feb 7 22:49:04 PST 2006

On 6 February 2006 at 19:05, Jesse Chappell <jesse at essej.net> wrote:

> > > >>- 64 bit SSE
> > > >
> > > > Could someone please expand on what this is?  I have a 64-bit
> > > > dual-core Athlon, and I'm wondering how I'll be affected.
> We had added SSE assembler routines to optimize the peak metering and
> audio mixing primitives.  Previously these were only available on
> non-64 bit machines, now we have both the 32 and 64 bit versions
> working.  Also, these optimizations are now enabled by default both at
> build time and run-time, but will only operate if the system supports
> SSE (most modern systems do).  To disable the optimizations at runtime
> (in case of trouble, or curiosity about the improvement) use the -O
> command line option.
> > Is this related to the AMD64 issue where jackd & ardour work fine for
> > some amount of time, and then suddenly there are lots of xruns?  As I
> > recall this is a bug in the CPU which was going to be worked around
> > by jackd.  Maybe these issues are completely unrelated, but I don't
> > know how to tell.
> No, that is related to clock source timing and is a totally unrelated
> jack-specific issue.

Very educational.  Thanks for the info!

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