Re: Why does Ada compile slower than Python?

[Blady <p.p11@orange.fr>]

Hello Victor,

Do you have considered using SparForte?
http://sparforte.com

"The computer language that the SparForte shell understands is called AdaScript. Unlike JavaScript, which has no relation to Java, AdaScript is a small subset of the Ada programming language, with additional features related to shell commands and databases.
AdaScript is intended to be "upward compatible" with Ada. AdaScript scripts should run with little difficulty under Ada, but Ada programs may require large changes run under SparForte."

HTH, Pascal.

Le mercredi 4 octobre 2017 18:03:24 UTC+2, Victor Porton a écrit :
> gautier wrote:
> 
> > Fortunately, with GNAT, the slow build time is well rewarded by
> > performance. I just have the following real case today at my job:
> > 
> > A certain number-crunching job is a big bottleneck since years. It has
> > been developed as a SQL stored procedure. Then someone has made a Python
> > version (program compiled into an executable). Independently I've made an
> > Ada version. All three programs produce the same result.
> > 
> > SQL    : 12 hours run time - weeks of development work
> > Python :  3 hours run time - weeks of development work
> > Ada    : 27 minutes run time - 3 days of development work.
> > 
> > Now the "clou": most of the run time is actually spent loading data via a
> > SQL select instruction. The actual number-crunching in Ada takes 24
> > *seconds* in total!... Since the loading of data is a "fixed cost" (+/-
> > the same whatever the implementation language) I let as an exercise to
> > figure out the speedup factor of the computation side :-).
> 
> My case is not expected especially computationally intensive. Therefore the 
> processing time is expected to depend mostly on compilation time (because I 
> am to load software from the Web and run it in a secure sandbox).
> 
> Thus the execution time is expected to depend mostly on compilation time, 
> not the time of execution itself. (However, I am not sure if this is really 
> so, it will be clear when my software will run and tested with some real-
> world scenaria.)
> 
> I need to take the decision whether Ada compiles fast enough to be used this 
> way.
> 
> -- 
> Victor Porton - http://portonvictor.org