[IPython-User] ipython slow to start with --pylab flag

alex arsenovic arsenovic@virginia....
Sat Aug 31 07:57:44 CDT 2013

thats correct, this is just the traditional ipython  terminal. here is a
video demonstrating the problem. i make a new profile (which also takes a
long time) and then start ipython with and without pylab, then change
networks and do the same.


really  weird, but  not a problem anymore.

On Fri, Aug 30, 2013 at 1:45 PM, Thomas Kluyver <takowl@gmail.com> wrote:

> On 30 August 2013 07:20, alex arsenovic <arsenovic@virginia.edu> wrote:
>> i noticed, somewhat by accident, that when i switched wifi APs and the
>> lag goes away. after some testing, it appears as though connecting to this
>> one certain AP causes the ipython startup lag, but only when using --pylab
>> flag.
>> it is as repeatable as it is unexpected. does anyone have any idea on how
>> this can be!?!!
> You said this earlier, but just to double check: this is repeatable with
> simply 'ipython --pylab'? The notebook and the Qt console do use network
> interfaces (only loopback, by default), so it's vaguely conceivable that
> they could be influenced by a wifi connection. But plain terminal IPython
> doesn't do anything that involves the network, and AFAIK neither does
> pylab, so I'm mystified as to what it could be.
> Is it possible that it's trying to load some files off a network drive,
> and it can do so quicker with one wifi connection than another?
> Thomas
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