11 Jul
2006
11 Jul
'06
12:23 p.m.
2006/7/11, Paul Davis <paul(a)linuxaudiosystems.com>om>:
On Tue, 2006-07-11 at 14:54 +0200, Arnold Krille
wrote:
Well, I _know_ that 64bit is faster: Here at work I have dual-Xeon's
with 2.8GHz, my laptop is a Turion64 with 1.8GHz. The same computation
(evaluating scientific data from time-of-flight/lifetime experiments)
on the same data-files is significant slower on the work-pc's (almost
factor 2). As my threads are one thread for computation and others for
loading and saving the data, it is really a comparison of two single
processors, where the faster one does even the IO-work itself...
Second: If you have a 64bit processor you
definitly want to make use
of it. Most apps nowadays calculate with double-numbers. these run a
lot faster on 64bit.
not really, they don't. floating point is done on a
different processor.
greater memory bandwidth on some processors/motherboards etc. can make
working with 80-bit floats faster, but a 64 bit CPU itself has no real
effect. also, i don't know many apps that use 80 bit FP,
for audio or anything
else that matter. there are some, but not many.
We will switch to 64bit here at work the next time we buy computers
because they _are_ faster. (even more as we are starting a project
with amd :-) )
Have a nice day,
Arnold
--
visit http://dillenburg.dyndns.org/~arnold/
---
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