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I concur with everything said here.....no doubt FPU is important, but
compared
to the "other" overhead imposed by TS2000i, I don't think it's a big deal.
> -----Original Message-----
> From: Gary Fritz [mailto:fritz@xxxxxxxx]
> Sent: Friday, January 14, 2000 10:24 AM
> To: Code List; omega-list@xxxxxxxxxx
> Subject: CL_Re: off topic: PIII vs Athlon
>
>
> > does it makes sense to get an Athlon instead of Penitum IIIs just
> > for TS 4.0? Does TS 4.0 uses floating point calculations heavily?
>
> I'm 99.999% sure the answer is "hell yes." Consider that there is no
> such thing as an "integer" data type in EL. I believe ALL user-
> declared variables are floating point, so ALL system code is FP.
>
> However, most likely the bulk of the time is spent not in EL, but in
> TS internal code (charting, managing data & orders, etc etc) and most
> of that is probably integer based.
>
> So I'd suspect better FP performance would help, but not
> dramatically. Faster integer performance would probably make a
> bigger impact.
>
> > Which one would be better when one strives for speed and
> > mathematical accuracy in computerized trading?
>
> If you are really concerned about math accuracy, then you shouldn't
> be using TS. Single-precision math and all that. IEEE math routines
> are strictly defined, so all CPU's should return *identical* FP
> results (or it's a bug!), so one CPU vs another won't change much.
> But single vs. double precision makes a BIG difference in some kinds
> of code.
>
> Gary
>
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