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| From: | Marco Caliari |
| Subject: | [Octave-bug-tracker] [bug #53140] Solution of a system of linear equations takes forever and hurts OS performance. |
| Date: | Tue, 20 Feb 2018 04:26:31 -0500 (EST) |
| User-agent: | Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:58.0) Gecko/20100101 Firefox/58.0 |
Follow-up Comment #15, bug #53140 (project octave):
@Rik: is it possible to understand whether it is a problem of memory
allocation or not? Because I find quite strange this idea
// Take a first guess that the number of nonzero terms
// will be as many as in b
If you try something like
A = sprand (1000, 1000, rand); x = A \ [1; zeros(999,1)]; nnz (x)
you will see that x is "never" sparse. I would like to investigate more, but I
have no time till the end of February.
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