I'm guessing that 'tic' and 'toc' are hooked to some timer mechanism.
Not too obvious.
Also when I used 'expression' I meant the ones being passed to the J
timer, not the jumbo verb. I guess that wasn't obvious either.
Roger Hui wrote:
I think the MatLab excluded the time for the random number generation.
Look closely at the posted code. Also, the J code "jumbo" did
include the 1000 repetitions of the matrix multiply.
----- Original Message -----
From: Randy MacDonald <[EMAIL PROTECTED]>
Date: Thursday, November 8, 2007 12:00
Subject: Re: [Jprogramming] speed of matrix*vector operation.
To: Programming forum <[email protected]>
Let's be fair; I don't think the Matlab guy excluded the random number
generation. The 1000 (or was it 1001?) repetitions of the matrix
multiply should also be in the J expression, something I don't think
I've seen. As far as I can see, the execution speedup of Matlab doesn't
cover the extra time it takes to type in the Matlab code, assuming there
are no typos in that long piece of Matlab.
Roger Hui wrote:
You should exclude the time needed to generate the random numbers.
----- Original Message -----
From: Devon McCormick <[EMAIL PROTECTED]>
Date: Thursday, November 8, 2007 10:30
Subject: Re: [Jprogramming] speed of matrix*vector operation.
To: Programming forum <[email protected]>
6!:2 '(?256$0)*"1]?312 256$0'
0.121752
On 11/8/07, Michael Dykman <[EMAIL PROTECTED]> wrote:
On Nov 8, 2007 1:13 PM, <[EMAIL PROTECTED]> wrote:
I told my friend about how nice J was. Am I wrong?
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--
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|\/| Randy A MacDonald | APL: If you can say it, it's done.. (ram)
|/\| ramacd <at> nbnet.nb.ca |
|\ | | The only real problem with APL is that
BSc(Math) UNBF'83 | it is "still ahead of its time."
Sapere Aude | - Morten Kromberg
Natural Born APL'er |
-----------------------------------------------------(INTP)----{ gnat }-
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