simd branch ready for review

[Carter Schonwald]

1) Awesome


2) Got it, yeah that piece is important.

I just took some time to look through whats currently in (on the wiki  at
http://hackage.haskell.org/trac/ghc/wiki/SIMD/Design)
and It looks like for now that'll cover  my immediate needs quite nicely!
(I have a reflex to jump towards "ALL the THINGS" in engineering)

I'm still monotonically working on those tools.
Haven't had the time to play with the SIMD branch (vagaries of time
delimited by doing consulting for income). Once 7.8 is out in at least RC
status, I"ll have the bandwidth to properly start playing with the SIMD
primops properly and trying out comparative benching.

again: really exciting stuff, and i'm looking forward to using it soon!
-Carter


On Mon, Feb 4, 2013 at 5:09 PM, Geoffrey Mainland <mainland at apeiron.net>wrote:

> On 02/04/2013 09:34 PM, Carter Schonwald wrote:
> > I'm really excited to see this merged in! Props on all involved
> >
> > question 1: Will this be included in the upcoming 7.8 release?
>
> Yes, that's the plan!
>
> > question 2: I see that some of the useful (albeit specialized) SSE
> > primops aren't included, though it looks like adding them (at least
> > for platforms that support them) would be largely mechanical..... If
> > adding those primops is something GHC HQ would welcome (ignoring the
> > sorting out the whole supporting SSE2 vs full AVX discussion), I'm
> > more than happy to spend some time turning the crank to add those
> > primops.
>
> I'd like to figure out how to properly support having the set of
> available primops depend on the dynamic flags before adding too much
> more. I'll be speaking to Simon PJ about it tomorrow.
>
> Do you have specific needs for any missing primops? If so, I'd like to
> know---customers are good :)
>
> We talked a while ago about you possibly cooking up some sample programs
> that needed SSE instructions. Have there been any recent developments?
>
> Thanks,
> Geoff
>
> > thanks
> > -Carter Schonwald
> >
> > On Sat, Feb 2, 2013 at 4:46 AM, Geoffrey Mainland
> <mainland at apeiron.net> wrote:
> >
> > On 02/02/2013 09:37 AM, Karel Gardas wrote:
> > > On 02/ 1/13 09:19 AM, Geoffrey Mainland wrote:
> > >> As an aside, what's the proper way for me to test the ARM
> > >> cross-compilation support? I'm afraid my patches may break things
> > >> there.
> > >
> > > I've seen you've merged your changes into mainline so I've done a
> > > build of GHC HEAD on my arm/linux and it's gone fine so you've not
> > > broken anything -- at least from the build perspective.
> > >
> > > Thanks,
> > > Karel
> >
> > Thanks for the confirmation. I followed the instructions for building
> > the Raspberry Pi cross GHC and tested the simd branch before I merged,
> > but I'm glad to know I didn't break anything obvious for you either!
> >
> > Geoff
>
>
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