[PD] Hunting denormals?

errordeveloper at gmail.com errordeveloper at gmail.com
Sun Nov 2 23:07:13 CET 2008


On Fri, Oct 31, 2008 at 04:27:08PM -0400, Bill Gribble wrote:
> I have a patch of medium complexity, with a handful of instruments~ and
> a bunch of sequencing and arranging-type message handling.  On my speedy
> Intel laptop it has no problem and barely notches the CPU usage.
> However, when I run this patch on my teeny Geode-based UMPC it pegs CPU
> at 100%. 
i wouldn't expect a lot from a geode machine ;))
> 
> I'm pretty sure this is a denormal issue.  There are a grand total of
> maybe 5 noise~, 5 osc~, 10 vline~, 5 lop~, and 1 delay line in the whole
> patch and not much else besides message processing... I wouldn't guess
> this to run me out of compute power. 
pardon, but what the word 'denormals' means? ..never heard it
> 
> Any hints on how to isolate where the denormals might be popping up?  I
> have looked for signal processing loops, and the only ones I create are
> around the delayline (feedback) and I suppose in the iir implementation
> of the lop~.  
> 
> Any help appreciated, 
> Bill Gribble
> 
> 
> 
> 
> 
> 
> 
> 
> _______________________________________________
> Pd-list at iem.at mailing list
> UNSUBSCRIBE and account-management -> http://lists.puredata.info/listinfo/pd-list




More information about the Pd-list mailing list