Florian Klaempfl wrote:
Daniël Mantione schrieb:
To get a large speedup, I think you should instead of making pairs of
doubles, do the pixels in parallel. I.e. in this benchmark, a row is
3000 pixels wide, so, make an array of 3000 doubles, and do the
operation with arrays. With proper compi
Op Sun, 8 Oct 2006, schreef Vincent Snijders:
> > You are right. How about doing it in blocks of 8x8 pixels? The high
> > iteration loops are concentrated close to the borders of
> > the set, so for most blocks the iteration can then be ended early.
>
> For starters I was thinking about blocks
Daniël Mantione wrote:
Op Sun, 8 Oct 2006, schreef Vincent Snijders:
Daniël Mantione wrote:
Op Sat, 7 Oct 2006, schreef Florian Klaempfl:
Vincent Snijders schrieb:
I started to add vector pascal like support, currently only
i386/x86_64 are
supported (no generic support). The whole (cur
Op Sun, 8 Oct 2006, schreef Vincent Snijders:
> Daniël Mantione wrote:
> >
> > Op Sat, 7 Oct 2006, schreef Florian Klaempfl:
> >
> >
> > > Vincent Snijders schrieb:
> > >
> > > I started to add vector pascal like support, currently only
> > > i386/x86_64 are
> > > supported (no generic suppo
> The 'problem' in this benchmark is that the number of iterations of the
> inner loop isn't fixed, but can vary between 1 and 50. If you pair two
> doubles, the change you can break the loop for all elements of the
> vector before iteration 50 is bigger than when you combine 3000 elements.
The
Daniël Mantione wrote:
Op Sat, 7 Oct 2006, schreef Florian Klaempfl:
Vincent Snijders schrieb:
I started to add vector pascal like support, currently only i386/x86_64 are
supported (no generic support). The whole (currently implemented)
functionality is demonstrated by the following example.
Florian Klaempfl wrote:
Vincent Snijders schrieb:
Daniël Mantione wrote:
Op Fri, 6 Oct 2006, schreef Micha Nelissen:
Vincent Snijders wrote:
You could also start an assembler implementation of the matrix unit.
I suppose using it is allowed, and a Tvector2_double looks a lot like
such a
Daniël Mantione schrieb:
Op Sat, 7 Oct 2006, schreef Florian Klaempfl:
Vincent Snijders schrieb:
Daniël Mantione wrote:
Op Fri, 6 Oct 2006, schreef Micha Nelissen:
Vincent Snijders wrote:
You could also start an assembler implementation of the matrix unit.
I suppose using it is allowed,
Op Sat, 7 Oct 2006, schreef Florian Klaempfl:
> Vincent Snijders schrieb:
> > Daniël Mantione wrote:
> > >
> > > Op Fri, 6 Oct 2006, schreef Micha Nelissen:
> > >
> > >
> > > > Vincent Snijders wrote:
> > > >
> > > You could also start an assembler implementation of the matrix unit.
> > > I
Vincent Snijders schrieb:
Daniël Mantione wrote:
Op Fri, 6 Oct 2006, schreef Micha Nelissen:
Vincent Snijders wrote:
You could also start an assembler implementation of the matrix unit. I
suppose using it is allowed, and a Tvector2_double looks a lot like
such a double2.
Unless the comp
Daniël Mantione wrote:
Op Fri, 6 Oct 2006, schreef Micha Nelissen:
Vincent Snijders wrote:
You could also start an assembler implementation of the matrix unit. I
suppose using it is allowed, and a Tvector2_double looks a lot like such a
double2.
Unless the compiler somehow helps, inlinin
Micha Nelissen wrote:
Vincent Snijders wrote:
tracker item for this? Compiler hacking is out of my league.
It's also "just" pascal, you know ;-).
Sure, but modifying the compiler to reach my goal is an extra
indirection, which makes it more difficult for me.
There is a difference betwe
Op Fri, 6 Oct 2006, schreef Micha Nelissen:
> Vincent Snijders wrote:
> > So if fpc hypothetically would support a type double2 = array[0..1] of
> > double and operators like + - * on it would use the packed double
> > instructions of sse2, then it could be used in the shoutout benchmarks.
>
>
Vincent Snijders wrote:
> So if fpc hypothetically would support a type double2 = array[0..1] of
> double and operators like + - * on it would use the packed double
> instructions of sse2, then it could be used in the shoutout benchmarks.
Isn't it better to generalize this support to vectors ? May
Florian Klaempfl wrote:
Vincent Snijders schrieb:
Hi,
I wondered if it is possible to add support for using sse2 packed
doubles in fpc.
I tried to create a sse2doubles type and define a operator + on it.
Eventually I want to move this type and all operators on it to a
separate sse2 unit,
Vincent Snijders wrote:
> tracker item for this? Compiler hacking is out of my league.
It's also "just" pascal, you know ;-).
Micha
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Vincent Snijders schrieb:
Hi,
I wondered if it is possible to add support for using sse2 packed
doubles in fpc.
I tried to create a sse2doubles type and define a operator + on it.
Eventually I want to move this type and all operators on it to a
separate sse2 unit, so that the user of this t
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