Tips for code porting to MC

[Pierre Sahores]

xbury.cs at clearstream.com wrote:
> 
> Hi Guys,
> 
> Im porting a rather large neural network (NN) program written in C++ to
> Metacard to do some stats...
> 
> Im looking for tips regarding porting variable redirection (pointers and
> pointers to pointers)
> and c-style struct variables. The key to porting these is speed as NN
> require speed and ease of
> scripting as MC is all about that!
> 
>  for example:
>   how do you port x[a][b] = item b of line a of x
>   But this proves extremely slow once you reach a>1000...
> 
>   what about
>   p->x->b[i]
> 
>   so far the best I found (without much searching I admit) is
>   p_x_b[i]
> 
>  but what of
> p->x[a]->b
> 
> Im looking for any good schemes you may propose!
> 
> Thanks in advance for any help!
> Xavier
> http://monsieurx.com - incoming metacard section... my site is back! ;))
> 
> Visit us at http://www.clearstream.com
>

Hi, 

1.- Use extensively the "read-only" "repeat for each..." loop structure.
2.- Use extensively the array vars instead of "item-lines" tables vars
to store the datas you are searching on, sorting,...
3.- Use B-Tree alike data storage structures if the datas you have to
parse at once exceed 500 ko.
4.- Run your app under Linux (extensively tested as two time faster than
both Windows or MacOSX).

-- 
Cordialement, Pierre Sahores

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