Re: [Maxima-discuss] GCL crash / environment variable, Debian package, was: sbcl-only testsuite fail [gamma_incomplete_lower] in rtest_simplify_sum

[Camm Maguire]

Last December, gcl moved the control file for
GCL_MULTIPROCESS_MEMORY_POOL to the user's homedir to get around
multiuser access problems.  One can also step around all such issues
with

export GCL_MULTIPROCESS_MEMORY_POOL=nil

If problems persist beyond this please let me know.

Take care,

Gunter Königsmann <address@hidden> writes:

>  Maybe you can contact the maintainer of the Debian package for Maxima
> and ask him for advice about it. I don't think I can help solve this
> problem -- I don't observe that behavior on my system, and I don't
> know enough about GCL to offer a solution.
>
> Hey! That happens to be the problem I was investigating on the launchpad 
> virtual build servers.
>
> I wasn't sure if it is actually is a real problem since on my own 
> (non-virtual) machine I never encountered it. And there actually are options 
> on what we can do (see my other mail I've just sent to this list). But I 
> don't know if any of these options is optimal, so I would like
> the others to decide: Memory management isn't a strong point of gcl. If we 
> don't tweak it in src/maxima.in
>
> * we typically cannot run maxima on the same machine thunderbird, Chromium or 
> firefox runs on
> * we typically cannot run two maxima sessions on the same machine
> * And the build servers having only 16GB of RAM available for our test suite 
> run don't manage to run maxima's test suite without running out-of-memory.
>
> But if we tweak gcl's memory management there (like we actually do) the 
> settings we decide upon might not be helpful for the actual user that runs an 
> actual problem.
>
> Kind regards,
>
>    Gunter.
>
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>

-- 
Camm Maguire                                        address@hidden
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