I can confirm the regression, after a few seconds I get
TypeError: ECL says: Memory limit reached. Please jump to an outer pointer,
quit program and enlarge the
memory limits before executing the program again.
The process that consumes the memory is sage-ipython (in the ECL shared
library), not sage-cleaner.
On Friday, June 28, 2013 8:09:49 AM UTC-4, Joris Vankerschaver wrote:
>
> Hi all,
>
> I've been out of the Sage loop for a while, but upon upgrading to 5.10, I
> found that Maxima seems to choke on the following innocuous code which used
> to run fine. I'm posting this here, because this issue came up while I was
> working on #10132, and also because it affects usability.
>
> sage: u, v = var('u,v')
> sage: assume(u, 'real')
> sage: assume(v, 'real')
> sage: assume(u^2 + v^2 < 1)
> sage: n = vector((u/sqrt(-u^2 - v^2 + 1), v/sqrt(-u^2 - v^2 + 1), 1))
> sage: norm = n.norm(); norm
> sqrt(abs(u/sqrt(-u^2 - v^2 + 1))^2 + abs(v/sqrt(-u^2 - v^2 + 1))^2 + 1)
> sage: norm.simplify_full()
>
> The last command just sits there on 5.10, and consumes all the resources
> (more specifically, /Users/Joris/sage/local/bin/sage-cleaner consumes all
> the available memory). In Sage 5.3, the last command just would return
> I/sqrt(u^2 + v^2 - 1) which is not very nice but at least it's short and
> fast.
>
> Is this known? Is there something I can do to avoid this?
>
> All the best,
> Joris
>
>
>
>
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