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Re: Wolfram, meet Stefan and Boltzmann

  • To: mathgroup at smc.vnet.net
  • Subject: [mg117314] Re: Wolfram, meet Stefan and Boltzmann
  • From: peter lindsay <pl0 at me.com>
  • Date: Tue, 15 Mar 2011 06:02:41 -0500 (EST)

3.6 s

few months old MacBookPro 2.4 GHz Intel Core i5, 4GB.

Peter


On 14 Mar 2011, at 10:59, DrMajorBob wrote:

> On my 2.8 GHz 3-yr-old core duo iMac:
> 
> Timing[Integrate[x^3/(Exp[x] - 1), {x, 0, Infinity}]]
> 
> {2.02204, \[Pi]^4/15}
> 
> Bobby
> 
> On Sun, 13 Mar 2011 05:26:09 -0500, Murray Eisenberg  
> <murray at math.umass.edu> wrote:
> 
>> With Mathematica 8.0.1 on a MacBook (not Pro) with OS X 10.6.6, 2.26 GHz
>> Core 2 Duo, 2 GB RAM, I get timing of 2.52093 for the same thing.
>> 
>> With Mathematica 8.0.1 on a white-box Windows XP Pro PC, 3.0 GHz Core 2
>> Duo E6850, 4 GB RAM (with the usual ~3 GB, only, available to Windows
>> XP), I get timing of 1.656 for the same thing.
>> 
>> On 3/12/2011 5:10 AM, AES wrote:
>>> No complaints here, just curious:
>>> 
>>> Opened my copy of Mathematica 8.0 on my MacBook running Snow Leopard,
>>> and as my first action typed in and evaluated the famous integral
>>> 
>>>       Timing[Integrate[x^3 /(Exp[x]-1),{x,0,Infinity}]]
>>> 
>>> It took 19.8 seconds to get the famous result Pi^4 / 15.
>>> 
>>> Seems a bit long -- what might have been taking up the time?
>>> 
>> 
> 
> 
> -- 
> DrMajorBob at yahoo.com
> 



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