Re: [Haskell-cafe] Re: Haskell and .NET

2006-12-13 Thread Neil Mitchell

Hi


> And strictness is not the biggest problem, a complete lack of any
> optimisations is, but I'm working on that one too!

It is great to hear that. Of course an optimiser will be beneficial
too but I guess that even the benefit that the code generator can have
from the strictness analyzer will make huge difference.


In the GHC back end I seem to remember strictness gives a 10%
performance improvement, but let motion gives a 30% improvement - its
quite likely that .NET will benefit more from strictness, but still
the general optimisation is probably going to be a bigger win.

I think basic strictness information gained about 5% in the Javascript
Yhc backend, so not great amounts.

The optimiser does generalised deforestation, and loads of other cool
tricks, so I'm hoping for at least 50% over the normal Yhc code :)

Thanks

Neil
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Re: [Haskell-cafe] Re: Haskell and .NET

2006-12-13 Thread Justin Bailey

On 12/13/06, Krasimir Angelov <[EMAIL PROTECTED]> wrote:


The problem with Haskell for .NET is that the produced executables are
usually very slow. Good optimizing compiler like GHC has better chance



I don't really want something that compiles Haskell to the CLR, though that
would be great eventually. Even something that just interoperates with .NET
is good enough. The Hugs98.NET project seemed to extend the FFI to be able
to work with .NET - is that capability available somewhere still?

Justin
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Re: [Haskell-cafe] Re: Haskell and .NET

2006-12-13 Thread Krasimir Angelov

On 12/13/06, Neil Mitchell <[EMAIL PROTECTED]> wrote:

Hi Krasimir,

> to produce code with reasonable performance. The major problem with
> YHC is that it still doesn't have strictness analyzer.

It does, or rather Yhc.Core does (see Yhc.Core.Strictness -
http://www.cs.york.ac.uk/fp/yhc/snapshot/docs/Yhc-Core-Strictness.html).
This was only done a few weeks ago, so the .NET translator has no
benefit from it.

And strictness is not the biggest problem, a complete lack of any
optimisations is, but I'm working on that one too!


It is great to hear that. Of course an optimiser will be beneficial
too but I guess that even the benefit that the code generator can have
from the strictness analyzer will make huge difference.

Cheers,
 Krasimir
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Re: [Haskell-cafe] Re: Haskell and .NET

2006-12-13 Thread Neil Mitchell

Hi Krasimir,


to produce code with reasonable performance. The major problem with
YHC is that it still doesn't have strictness analyzer.


It does, or rather Yhc.Core does (see Yhc.Core.Strictness -
http://www.cs.york.ac.uk/fp/yhc/snapshot/docs/Yhc-Core-Strictness.html).
This was only done a few weeks ago, so the .NET translator has no
benefit from it.

And strictness is not the biggest problem, a complete lack of any
optimisations is, but I'm working on that one too!

Thanks

Neil
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Re: [Haskell-cafe] Re: Haskell and .NET

2006-12-13 Thread Bulat Ziganshin
Hello Monique,

Wednesday, December 13, 2006, 1:05:18 AM, you wrote:

> subset of the Haskell language to .NET, but we still don't have an
> available release (we don't support the full Haskell prelude yet).

if you are interested in providing Base library functionality, look at the
http://haskell.org/haskellwiki/Library/Core - it is my project of refactoring
Base library in (almost) compiler-independent way

-- 
Best regards,
 Bulatmailto:[EMAIL PROTECTED]

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Re: [Haskell-cafe] Re: Haskell and .NET

2006-12-13 Thread Krasimir Angelov

The problem with Haskell for .NET is that the produced executables are
usually very slow. Good optimizing compiler like GHC has better chance
to produce code with reasonable performance. The major problem with
YHC is that it still doesn't have strictness analyzer. The consequence
is that the produced .NET code creates lots of unnecessary temporal
objects.

Cheers,
 Krasimir

On 12/13/06, Neil Mitchell <[EMAIL PROTECTED]> wrote:

Hi

Yhc also has a .NET generating capability, just pass the -dotnet flag.

http://haskell.org/haskellwiki/Yhc

Thanks

Neil

On 12/12/06, Monique Monteiro <[EMAIL PROTECTED]> wrote:
> Hi Justin,
>
>   I've runned a research project about this topic (in fact, it was the
> subject of my MSc dissertation).  Please see the Haskell.NET Project
> (http://www.cin.ufpe.br/~haskell/haskelldotnet).  We have compiled a
> subset of the Haskell language to .NET, but we still don't have an
> available release (we don't support the full Haskell prelude yet).
> The compiler is an extension to GHC.
>
>   In the future, we intend to provide full interoperability with .NET
> in this way.  There are some interesting references in the website
> about our compilation strategies.
>
>   If you need further information about the project's status, please
> contact Prof. André Santos ([EMAIL PROTECTED]) and/or Guilherme Avelino
> ([EMAIL PROTECTED]).
>
> Best regards,
>
> --
> _
> Monique Monteiro, MSc
> http://www.cin.ufpe.br/~mlbm
> http://thespoke.net/blogs/moniquelouise/default.aspx
> [EMAIL PROTECTED]
> +55 81 34198137
> Project Manager
> Recife Microsoft Innovation Center
> ___
> Haskell-Cafe mailing list
> Haskell-Cafe@haskell.org
> http://www.haskell.org/mailman/listinfo/haskell-cafe
>
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Re: [Haskell-cafe] Re: Haskell and .NET

2006-12-13 Thread Neil Mitchell

Hi

Yhc also has a .NET generating capability, just pass the -dotnet flag.

http://haskell.org/haskellwiki/Yhc

Thanks

Neil

On 12/12/06, Monique Monteiro <[EMAIL PROTECTED]> wrote:

Hi Justin,

  I've runned a research project about this topic (in fact, it was the
subject of my MSc dissertation).  Please see the Haskell.NET Project
(http://www.cin.ufpe.br/~haskell/haskelldotnet).  We have compiled a
subset of the Haskell language to .NET, but we still don't have an
available release (we don't support the full Haskell prelude yet).
The compiler is an extension to GHC.

  In the future, we intend to provide full interoperability with .NET
in this way.  There are some interesting references in the website
about our compilation strategies.

  If you need further information about the project's status, please
contact Prof. André Santos ([EMAIL PROTECTED]) and/or Guilherme Avelino
([EMAIL PROTECTED]).

Best regards,

--
_
Monique Monteiro, MSc
http://www.cin.ufpe.br/~mlbm
http://thespoke.net/blogs/moniquelouise/default.aspx
[EMAIL PROTECTED]
+55 81 34198137
Project Manager
Recife Microsoft Innovation Center
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