[Cuis-dev] Slow execution

[Luis Mendes]

Hi,


I'm evaluating Cuis as a programming language for my use.
Smalltalk seems like a great environment to program.
But I need that programs can execute fast.

I did some non-rigorous benchmark to some languages for a CPU intensive
operation.
The language that I've been using is Tcl.  It's slow for some kind of
operations, and I will need a language that can go through lots of data.

Used Python just because it is so popular.

Used Euphoria because it's a simple language that runs fast.  Faster
yet when translated to C, but I didn't test the speed after this
operation.

Also tested Icon because it's compiled, has great tools for text
related operations, and can also run on MS-DOS, as can Euphoria, in
case I decide to also use this focused environment to program.

For the Erathostenes code found on Rosettacode, these are the results I
got:

1.000.000 times				milliseconds

eratosthenes2.eu		      70
eratosthenes2.eu		      90
eratosthenes_generator.py	     114
eratosthenes_array.py		     121
eratosthenes_set.py                  253
eratosthenes.icn	             700
eratosthenes_sets.icn		     580
eratosthenes.tcl		    2112
eratosthenes2.tcl		    4792
cuis 5.0 2021			   27472
cuis 7.9 2026			    2093
squeak6.2 alpha 24031 		      66


The Smalltalk code used was this one:

| startTime elapsed potentialPrimes limit |
startTime := Time millisecondClockValue.

limit := 100.
potentialPrimes := Array new: limit.
potentialPrimes atAllPut: true.

2 to: limit sqrt floor do: [:testNumber |
    (potentialPrimes at: testNumber) ifTrue: [
        (testNumber squared) to: limit by: testNumber do: [:nonPrime |
            potentialPrimes at: nonPrime put: false
        ]
    ]
].

2 to: limit do: [:testNumber |
    (potentialPrimes at: testNumber) ifTrue: [
        Transcript show: testNumber asString; cr
    ]
].

elapsed := Time millisecondClockValue - startTime.
Transcript show: elapsed printString; show: ' ms'; cr.


What I found is that printing the numbers in a window is very slow for
Cuis, maybe the difference is entirely related to it.
Something like 60-70 ms, like in Squeak would be great.

Any comments?

Thank you,


Luís Mendes