#10295: Upgrade and optimize pexpect
-------------------------------------+-------------------------------------
Reporter: SimonKing | Owner: was
Type: enhancement | Status: needs_review
Priority: major | Milestone: sage-6.10
Component: interfaces | Resolution:
Keywords: pexpect upgrade | Merged in:
Authors: François Bissey, | Reviewers: Jeroen Demeyer
Bill Page, Jeroen Demeyer | Work issues:
Report Upstream: Reported | Commit:
upstream. No feedback yet. | f0523e41eb491c0589c230973229cfeb2123dccd
Branch: | Stopgaps:
u/jdemeyer/pexpect3.3 |
Dependencies: #19671 |
-------------------------------------+-------------------------------------
Comment (by leif):
Replying to [comment:156 jdemeyer]:
> Replying to [comment:155 leif]:
> > In the same sense, benchmarking with `gp("2^2^22")` seems hardly
appropriate, IMHO.
>
> Large outputs do actually happen in Sage. It's not so crazy.
Yep, but certainly not the typical usage scenario of pexpect, so I
wouldn't blame upstream for their default buffer size.
On the other hand, often the interaction of Sage with pexpect-driven
programs looks more like a human one, where lots of variables get set with
short commands, to finally get a (typically relatively short) answer.
Mainly in toy examples communication overhead dominates computation time
(unless latency in a longer dialogue is really bad, as we experienced with
some Ubuntu kernels a while ago).
[[BR]]
I'm not very worried about the increased CPU time (yet ;-) ); it's just
that we shouldn't exclusively focus on bare throughput.
If the number and/or size of objects passed is huge, it's probably more
worth thinking of other solutions.
--
Ticket URL: <http://trac.sagemath.org/ticket/10295#comment:158>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
--
You received this message because you are subscribed to the Google Groups
"sage-trac" group.
To unsubscribe from this group and stop receiving emails from it, send an email
to [email protected].
To post to this group, send email to [email protected].
Visit this group at http://groups.google.com/group/sage-trac.
For more options, visit https://groups.google.com/d/optout.
