#3760: creating 666 rings in singular fails with an out of memory error on
32-bit
intel os x.
---------------------------+------------------------------------------------
Reporter: was | Owner: was
Type: defect | Status: new
Priority: critical | Milestone: sage-3.4.1
Component: number theory | Keywords:
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Comment(by GeorgSWeber):
For the record:
The underlying problem is now known: Singular/omalloc relies on a version
2.6.5 of dlmalloc from 1998, and that version behaves bad on Macs.
In the course of the investigation, another Singular/kernel bug got in the
way.
I think I know how to *circumvent* this Singular/kernel bug ("just" drop
in the recent dlmalloc 2.8.3 at the place of the old version, and/or
prevent omalloc's "configure" from setting the macro
"OMALLOC_USES_MALLOC"), but I thought I try and fix that other bug first.
BTW:
From the historical remarks in v2.8.3 in dlmalloc it seems plausible that
the old v2.6.5 is the culprit also for the bad behaviour on Fedora 9/10
systems --- but this is ticket #5278. Which probably should be closed as a
dupe (to this ticket here).
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/3760#comment:10>
Sage <http://sagemath.org/>
Sage - Open Source Mathematical Software: Building the Car Instead of
Reinventing the Wheel
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