[Maxima] make_writable errors with gcl-2.6.8pre

Robert Dodier robert.dodier at gmail.com
Tue Apr 21 15:49:13 CDT 2009

On Tue, Apr 21, 2009 at 9:01 AM, Leo Butler <l.butler at ed.ac.uk> wrote:

> I built 5.18.1 with gcl-2.6.8pre sans `batch' patch, and I had no
> make_writable errors during `make check', too.
> However, I have a script that behaves quite oddly with this maxima:
> -When invoked in maxima via load("foo.mac"), the make_writable error appears
>  predictably after about 5 minutes.
> -When the script is run from the command line via `maxima -b foo.mac' the
> script runs fine.

Well, I wonder what's in this foo.mac ...

> (It has been running for about 18hours at the moment, and I expect it'll run for
> 10+days, barring further errors).

Are you sure it's making progress? My experience with GCL is that it
seems to allocate more memory than other Lisps and Maxima ends up
swapping endlessly. Is your Maxima process cpu-limited or is it swapping?

Robert Dodier

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