[PD] denormals on intel celeron
shift8 at digitrash.com
Tue Aug 23 20:59:38 CEST 2005
On Tue, 2005-08-23 at 09:31 -0700, Miller Puckette wrote:
> Hmm, weren't PD_BADFLOAT and PD_BIGORSMALL defined already on your system?
> It's "idfef __i386__" which I assumed would be turned on for Celerons. What
> compiler are you using???
gcc (GCC) 3.4.3 sorry - my c is a bit rusty (read: non-existant). i
didn't know if it was being defined or not, so i added it to the
> It's PD_BIGORSMALL that gets tested everywhere these days. But if you found
> a way to make denormals despite all the PD_BIGORSMALL fixes, I'd like to
> know where they're sneaking in.
so would i...
> I don't remember offhand if celerons have sse2 or not, and don't know if the
> -mfpmath=sse -msse flags work outside linux, but will at least try those
> on my system...
they do have sse2.
> On Tue, Aug 23, 2005 at 09:29:56AM +0200, Tim Blechmann wrote:
> > > hi all - i'm having really bad denormal problems on a intel celeron
> > > 2.4ghz. pd is from cvs aug 8th. looked around and found PD_BADFLOAT
> > > and PD_BIGORSMALL. on a lark i defined them and rebuilt, and even
> > > though it solved it for a while, but no - i'm still having the same
> > > problem. looked around some more and found those only appear in
> > > m_pd.h... anyone know what i can do to fix this?
> > 1. compile with -mfpmath=sse -msse (the sse unit is much better handling
> > denormals)
> > 2. use devel_0_39. it includes code to switch on hardware DAZ (Denormals
> > Are Zero) on cpus supporting sse2
> > hope this helps ... t
> > --
> > mailto:TimBlechmann at gmx.de ICQ: 96771783
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