Hello,
Xavier Leroy xavier.le...@inria.fr writes:
1- Have an additional ia32sse2 port of ocamlopt in parallel with the
current i386 port.
2- Declare pre-SSE2 processors obsolete and convert the current
i386 port to always use SSE2 float arithmetic.
3- Support both x87 and SSE2 float
On Sun, May 10, 2009 at 10:56:37AM +0200, CUOQ Pascal wrote:
According to http://en.wikipedia.org/wiki/SSE2, someone using a Via C7
should be fine.
AMD Geode then ...
$ grep -i flags /proc/cpuinfo
flags : fpu de pse tsc msr cx8 pge cmov mmx mmxext 3dnowext 3dnow up
Rich.
--
* Goswin von Brederlow:
Having ocaml require SSE2 is quite unacceptable for someone with a Via
C7 cpu (they don't have SSE2, right?)
More problematic are AMD's K7 and some of their Sempron processors, I
think. AMD introduced SSE2-less CPUs as late as 2004.
Do you guys have any sort of empirical evidence that scalar SSE2 math is
faster than plain old x87?
I ask because every time I tried compiling FFTW with gcc -m32
-mfpmath=sse, the result has been invariably slower than the vanilla x87
compilation. (I am talking about scalar arithmetic here.
On Sunday 10 May 2009 12:04:13 David MENTRE wrote:
Regarding option 2, I assume that byte-code would still work on i386
pre-SSE2 machines? So OCaml programs would still work on those machines.
As far as I know, one is using ocamlopt to improve performance. I can't
think of any case where one
On Monday 11 May 2009 00:12:49 Matteo Frigo wrote:
Do you guys have any sort of empirical evidence that scalar SSE2 math is
faster than plain old x87?
I believe the motivation is to make good performance tractible in ocamlopt so
it is more about the ease of code generation rather than the
with DisCoTec 09, Lisbon, 9-11 June.
A Global Computing Tutorial Series promoted by the Sensoria and Mobius
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As far as I know, one is using ocamlopt to improve performance.
I can't think of any case where one would need native code running on
pre-SS2 machines which are so outdated performance-wise.
You mean we should make slow machines even slower?
Stefan
On Monday 11 May 2009 04:43:21 Stefan Monnier wrote:
As far as I know, one is using ocamlopt to improve performance.
I can't think of any case where one would need native code running on
pre-SS2 machines which are so outdated performance-wise.
You mean we should make slow machines even
