Re: [Chicken-users] Was crunch really discontinued? Is there an alternative?

[Ivan Raikov]

Hello,

  If matrix multiplication is what you are interested in, then you could
consider using the Chicken bindings for the BLAS and ATLAS libraries:

http://chicken.wiki.br/eggref/4/blas
http://chicken.wiki.br/eggref/4/atlas-lapack

  -Ivan


Jeronimo Pellegrini <address@hidden> writes:

> Hello!
>
> I've been looking for some Scheme implementation that is suitable
> for number crunching and also supports SRFIs like 42 (eager
> comprehension), 45 (laziness), 25 (multidimensional arrays),
> and some others.
>
> So, I have tested Chicken, Bigloo and Gambit. There seems to be a
> necessary trade-off between number of SRFIs and number-chunching speed,
> unfortunately.
>
> I have written a program that repeatedly multiply matrices as a
> very simplistic benchmark (because it is the kind of thing I'd like
> to do very fast). The result was:
>
> bigloo  0.52s
> gambit  2.70s
> chicken 8.70s
>
> This is for compiled Scheme, with all possible optimizations turned
> on.
>
> The problem is that if it takes 1 hour for C code, I would then
> expect at least the same for bigloo, and at least 17 times more for
> Chicken -- or something close to that (it may even be a lot less,
> like 10 hours, but it's still too much time, unfortunately).
>
> So, going through the mailing list archives I learned about crunch,
> which seems to be awesome, but was being discontinued as of February:
> http://lists.gnu.org/archive/html/chicken-users/2009-02/msg00082.html
> (This would be my #1 option!)
>
> And I also found messages mentioning Pre-Scheme:
> http://lists.gnu.org/archive/html/chicken-users/2009-02/msg00109.html
>
> But neither of them is listed as an Egg in the eggs index here:
> http://chicken.wiki.br/chicken-projects/egg-index-4.html
>
> So, my question is -- was crunch really discontinued? What about the
> Pre-Scheme extension? Or is there anything similar?
>
> Thank you a lot!
> J.