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Re: Wolfram, meet Stefan and Boltzmann

  • To: mathgroup at smc.vnet.net
  • Subject: [mg117294] Re: Wolfram, meet Stefan and Boltzmann
  • From: DrMajorBob <btreat1 at austin.rr.com>
  • Date: Mon, 14 Mar 2011 05:59:48 -0500 (EST)

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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