Re: Mathematica. A big limit of mathematica !!!???

On Mon, 12 Sep 2005 20:09:38 +0200, DP <pfennige@xxxxxxxxxxxx> wrote:


>
>Do you realize that 10^8 elements should be generated in the table, each
>element needing several bytes, because the dot after the "3"
>means that you want floating point numbers? Just storing
>m will require at least several Gigabyte memory.
>Do you have such a computer? Probably not since Mathematica already
>told you "No more memory available".
>
>But this effort appears unnecessary because in your case your final
>result should be exactly 0. Indeed the matrix m is a sum
>of matrix with identical rows and a matrix with identical columns:
>in such a case only 1 or 2-dimensional matrices may have
>non-zero determinant since the spanned vector space is 2-dimensional.
>
>

HI DP

No I regret but with few simple accounts (ByteCounts[1.0] ) you can
calculate that they are necessary around 1.6 GB for m
Certainly that mathematica say that it doesn't have memory but the
true problem is because this happens in a numerical problem whose
resources are enough for other programs what Matlab, Maple...


Cheers
Roberto

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