[OpenSCAD] slow render, need help

Don Bright hugh.m.bright at gmail.com
Thu Oct 27 05:53:50 CEST 2011

i have similar problems.

i was able to debug the scad file a little bit by commenting out a
bunch of 'difference()' lines, reducing $fn to 10, and increasing all
of your basic parameters by a factor of 10 (i.e. box_height=700
instead of 70..... sometimes the drawing code crashes on small decimal
differences that dont exist when you deal with larger numbers. )

anyways, when i add the diff() back in it freezes as described.
running git openscad.

i also run
 nice -n 19 ionice -c 3 openscad
so i am able to kill it without having to hard-reset my machine.


On Wed, Oct 26, 2011 at 10:03 PM, Don Bright <hugh.m.bright at gmail.com> wrote:
> branch openscad-memleak doesnt appear to be uploaded to github
> On Wed, Oct 26, 2011 at 9:31 PM, Michael Brown
> <mebrown at michaels-house.net> wrote:
>> Ok, two things:
>> 1) The assertion error is gone! I can call openscad from the command line to
>> build my stl files.
>> 2) When I try to open up my scad files in openscad gui mode, it
>> *immediately* (within about 5 seconds) consumes all available RAM and gets
>> killed by the OOM killer.
>> I have tagged the offending code: openscad-memleak
>> git clone  git://github.com/superchalupa/container-round-decorative.git
>> cd container-round-decorative
>> git checkout openscad-memleak
>> openscad ./box.scad
>> I suggest having 'top' running and kill it when you see it get above a
>> couple gigs, or you risk crashing your machine (I've already done that a
>> couple times now).
>> I tried wrapping the toplevel object with render(), but that didnt help.
>> --
>> Michael
>> On Wed, Oct 26, 2011 at 5:50 PM, Marius Kintel <marius at kintel.net> wrote:
>>> On Oct 26, 2011, at 09:52 AM, Michael Brown wrote:
>>> > Unfortunately, I'm still running into assertion errors and/or crashes.
>>> I've fixed the assertion error. It was a bug in the caching code which was
>>> introduced in September.
>>>  -Marius
>>> _______________________________________________
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