I would note that several things can significantly influence timings.
It's also probably not wise to assuming that timing numbers are
completely reproducible.
ts '0 1{"1 ] 100000 10 $ a'
0.005122 1.04882e7
ts '0 1{"1 ] 100000 10 $ a'
0.00191 1.04882e7
ts '0 1{"1 ] 100000 10 $ a'
0.00194 1.04882e7
Things that can influence timing include the version of the
interpreter, the make of the cpu and the amount of available memory
(compared to what's being used in the timing). Here, though, we're
only using 10MB for intermediate results, which is relatively small on
typical current computers.
Thanks,
--
Raul
On Thu, Sep 12, 2013 at 3:35 PM, Pascal Jasmin <[email protected]> wrote:
>
>
> An essay on boxed vs unboxed table data.
> http://www.jsoftware.com/jwiki/PascalJasmin/Boxed%20vs%20unboxed%20data .
>
> The results might surprise most of you since there's been signficant
> performance tuning in J (around boxing) since its earlier days, and jmf and
> 3!:1 supports boxed data too now.
>
> Let me know if I've made mistakes, or overlooked something big.
> ----------------------------------------------------------------------
> For information about J forums see http://www.jsoftware.com/forums.htm
----------------------------------------------------------------------
For information about J forums see http://www.jsoftware.com/forums.htm
