#6772: increase default ecl memory limits for maxima+ecl in sage
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Reporter: was | Owner: mabshoff
Type: enhancement | Status: new
Priority: major | Milestone: sage-4.1.2
Component: packages | Keywords:
Reviewer: | Author:
Merged: |
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Example:
{{{
Here's a simpler example to get this error:
sage: m = maxima(2*10^6)
sage: time n=m.factorial()
Maxima encountered a Lisp error:
Memory limit reached. Please jump to an outer point or quit program.
Or, directly in Maxima:
(%i3) n : factorial(10^7);
GC Warning: Out of Memory! Returning NIL!
Maxima encountered a Lisp error:
Memory limit reached. Please jump to an outer point or quit program.
Automatically continuing.
To reenable the Lisp debugger set *debugger-hook* to nil.
}}}
And the response from the main ECL guy:
{{{
On Mon, Aug 17, 2009 at 10:57 AM, William Stein<[email protected]> wrote:
> Note that Sage's Maxima uses ECL. So the basic question is, how can
> we increase the memory that Maxima + ECL can use?
The limits ECL has are by default too small for big applications, but
it is intentionally done so. However, changing them is pretty easy:
add a call to ext:set-limit in any file of maxima that forms part of
the final executable.
The different memory limits that can be independently controlled are
listed here
http://ecls.sourceforge.net/new-manual/re34.html
So for instance, in your case, which hits the dynamically allocated
memory limit, you might add the following
(ext:set-limit 'ext:heap-size (* 1024 1024 1024))
to maxima/src/ecl-port.lisp in order get 1GB memory limit.
Juanjo
}}}
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/6772>
Sage <http://sagemath.org/>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
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