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Re: Memory exhausted when using \

From: Mathieu Dubois
Subject: Re: Memory exhausted when using \
Date: Thu, 19 Jul 2012 21:57:30 +0200 (CEST) 
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    <div class="moz-cite-prefix">Le 19/07/2012 16:31, Martin Helm a
      &eacute;crit&nbsp;:<br>
    </div>
    <blockquote cite="mid:address@hidden">
      <pre>Am 19.07.2012 15:55, schrieb Mathieu Dubois:
</pre>
      <blockquote>
        <pre>Le 17/07/2012 13:16, Martin Helm a &eacute;crit :
</pre>
        <blockquote>
          <pre>Am 17.07.2012 13:07, schrieb Mathieu Dubois:
</pre>
          <blockquote>
            <pre>    Hi Martin,

Sorry for the delay (I have a lot of other problems :).

I have installed lsqrSOL and used your snippet (except that I set atol
= btol = 1e6). It seems to work (but it&#39;s rather slow compared to the
matlab implementation which use \).

I will try to make sure that the results are similar.

Thanks for your help,
Mathieu
</pre>
          </blockquote>
          <pre>Do not forget what Jordi posted, maybe you simply ran into a bug 
in your
old octave version and the \ operator works for you with that problem
you try to solve when you update to the current version 3.6
</pre>
        </blockquote>
        <pre>Hello,

I have tried today with octave 3.6.1 (on a 64 bits machine but without 
64 bits adressing) and ran into the same problem.

I have tried to recompile octave with --enable-64 but without success.

Mathieu


</pre>
      </blockquote>
      <pre>Could you upload the matrix and the vector somewhere, it is otherwise
difficult to see why you get that problem. Since it is a sparse matrix
and we do so far not know anything about its structure or how sparse or
full it is?
If that is no problem for you to make its content public.</pre>
    </blockquote>
    Sorry for the dealy (it took a long time to rebuild octave :).<br>
    <br>
    I have no problem to make the data available but as I said the code
    is not mine.<br>
    <br>
    You can download the dump at:<br>
    &nbsp;<a class="moz-txt-link-freetext" 
href="http://www.ensta-paristech.fr/~mdubois/memory-exhausted"; 
target="_blank">http://www.ensta-paristech.fr/~mdubois/memory-exhausted</a><br>
    <br>
    The command I used was:<br>
    save memory-exhausted A b<br>
    right before the line:<br>
    tic; X = A \ b; toc;<br>
    (executing this line raises the error)<br>
    <br>
    Mathieu<br>
    <blockquote cite="mid:address@hidden">
    </blockquote>
    <br>
    <br>
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