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MathGroup Archive 2005

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Re: true limit of mathematica ? Help me !!!

  • To: mathgroup at smc.vnet.net
  • Subject: [mg60229] Re: [mg60203] true limit of mathematica ? Help me !!!
  • From: Pratik Desai <pdesai1 at umbc.edu>
  • Date: Thu, 8 Sep 2005 04:53:06 -0400 (EDT)
  • References: <200509070804.EAA17430@smc.vnet.net>
  • Sender: owner-wri-mathgroup at wolfram.com

LumisROB wrote:

>During this calculation:
>
>
>m= Table[(i-j)+3.*j^-4 +50*I,{I,1,10000},{j,1,10000}];
>Det[m]
>
>
>the kernel has jammed and the following message has been visualized
>No more memory available.
>Mathematica kernel has shut down.
>
>Is it possible to overcome this obstacle?
>
>The dimension of the in demand memory is not limited from windows xp
>or my hardware-software' configuratiion, in fact such error also
>happens in xp 64 Bit with Mathematica 5.2 (64 Bit) Athlon 64 2 GB Ram.
>Are these problems the true limit of mathematica ? ??or Where am I
>being wrong? 
>
>Thanks for the help
>
>Roberto R.
>
>  
>
Hi
For starters I think you should change your capital I's to i because I 
is locked and protected as Sqrt[-1]. I get the same message (Out of 
Memory message) for my somewhat pedestrian Win XP with Intel Celeron.

I get something when I change the iterator to 10
m= Table[(i-j)+3.*j^-4 +50*i,{i,1,10000,10},{j,1,10000,10}];
Det[m]


 >\!\(9.0512275103521472601194284`15.954589770191005*^-9068\)

best regards

Pratik

-- 
Pratik Desai
Graduate Student
UMBC
Department of Mechanical Engineering
Phone: 410 455 8134



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