Re: Wolfram, meet Stefan and Boltzmann
- To: mathgroup at smc.vnet.net
- Subject: [mg117334] Re: Wolfram, meet Stefan and Boltzmann
- From: leigh pascoe <leigh at evry.inserm.fr>
- Date: Tue, 15 Mar 2011 06:06:20 -0500 (EST)
Ona DELL Optiplex, Intel Core2, 2.18Ghz, Windows XP
After evaluating something to launch the kernel.
In[2]:= Timing[Integrate[x^3/(Exp[x] - 1), {x, 0, Infinity}]]
Out[2]= {2.406, \[Pi]^4/15}
In[3]:= Timing[Integrate[x^3/(Exp[x] - 1), {x, 0, Infinity}]]
Out[3]= {0.14, \[Pi]^4/15}
Leigh
Le 14/03/2011 11:59, DrMajorBob a =C3=A9crit :
> 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?
>>>
>