Re: Mathematica 7 much slower than Mathematica 6 on Limit
- To: mathgroup at smc.vnet.net
- Subject: [mg94784] Re: Mathematica 7 much slower than Mathematica 6 on Limit
- From: Bill Rowe <readnews at sbcglobal.net>
- Date: Thu, 25 Dec 2008 03:57:34 -0500 (EST)
On 12/24/08 at 6:04 AM, sydgeraghty at me.com (Syd Geraghty) wrote:
>These are three sequential results on V7 and V5.2 on the system
>defined below my email address:
>1 {102.358, 63.4524} V7
>2 {0.398885 Second, 63.4524} V5.2
>3 {0.001689, 63.4524} V7
>Strange results:
>I started from fresh kernels and re-ran results in the sequence
>below:
>4 {0.32161 Second, 63.4524} V5.2
>5 {102.669, 63.4524} V7
>6 {0.000948 Second, 63.4524} V5.2
>7 {0.002093, 63.4524} V7
By default, Mathematica caches results. So, unless you
specifically do something to clear those caches such as quitting
the kernel, the second time you do the computation, results are
returned from the cache rather than being re-computed from
scratch. So, you should expect the second execution of a
computation to take significantly less time in general.