On 28 Jun., 19:28, kcrisman <kcris...@gmail.com> wrote:
> I know there are not tons of PPC users still on these lists, but I
> wanted to ask whether they had seen something weird when testing sage/
> interfaces/maxima.py.  Namely, there is a guaranteed timeout (even
> with SAGE_TIMEOUT=10000)!  Previously I traced this to the functions
> which create the tab-completion list for maxima.[tab], and I have no
> reason to believe this isn't still the problem.
>
> Georg,

It's not a "PPC specific" issue; I do see this every now and then on
my MacIntel running OS X 10.4.11, so I suspect it's some
incompatibility of the sometimes rather rude way Sage interfaces with
Maxima (via pexpect, using Ctrl-C from time to time) on the one hand,
and on the other hand some system peculiarity/deficiency of OS X 10.4
Tiger. Or maybe the OS X 10.4 system itself is absolutely fine, but
more vulnerable than all the other systems to some "race condition-
like" bug still lurking somewhere in the way Sage incorporates
Maxima.

I remember that once Michael Abshoff had created some mechanism to
make the Sage/Maxima interface (i.e. the pexpect interface in general)
produce verbose output into some log files (via setting an enironment
variable?), but I didn't get around to do any testing in that
direction, and then Michael left the Sage project. And I don't think
it's a problem with the general pexpect interface --- although going
this way might be the only way to go, starting to hunt down the bug.


Cheers,
Georg

> anyone with access to the Skynet PPC computer (varro?)... any
> ideas?  Have you seen this?
>
> - kcrisman

-- 
To post to this group, send an email to sage-devel@googlegroups.com
To unsubscribe from this group, send an email to 
sage-devel+unsubscr...@googlegroups.com
For more options, visit this group at http://groups.google.com/group/sage-devel
URL: http://www.sagemath.org

Reply via email to