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Re: surprising comparison of Mathematica 5.2 and 7.0

  • To: mathgroup at smc.vnet.net
  • Subject: [mg111219] Re: surprising comparison of Mathematica 5.2 and 7.0
  • From: juan flores <juanfie at gmail.com>
  • Date: Sat, 24 Jul 2010 05:05:44 -0400 (EDT)
  • References: <i293uc$mck$1@smc.vnet.net> <i2btci$bco$1@smc.vnet.net>

On a Mac,
--------
7.0 for Mac OS X x86 (64-bit) (November 11, 2008)
c[4]=-(38475/16384)
time=6.2792
memory=140.069 MB
--------

Results depend on how busy your computer is.  The above results were
gotten on a fresh kernel running nothing else, but Mathematica.

Also, TimeUsed[] gives the total number of seconds of CPU time used so
far in the current Mathematica session.

So, results will vary if you run it twice or later on a non-fresh
kernel session.

Just some thoughts.

Juan


On Jul 23, 6:11 am, "Bruno Campanini" <bruno... at libero.it> wrote:
> "mathfanda" <KKra... at seznam.cz> wrote in message
>
> news:i293uc$mck$1 at smc.vnet.net...
>
> > Dear Mathematica friends,
>
> > the following program runs 4.7 times faster and uses 22.7 times less
> > memory
> > in Mathematica 5.2 than in Mathematica 7.0.
> > Fortunately, it gives the same result.
>
> [...]
>
> My results:
>
> 7.0 for Microsoft Windows (64-bit) (November 11, 2008)
> c[4]=-(38475/16384)
> time=24.217
> memory=142.09 MB
>
> Winserver 2008 R2 64-bit, 4Gb RAM
>
> Very bad indeed!
>
> Bruno



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