Does IPython offer any profiling? Does regular Python profiling work? I would recommend to start a profiling session before the last statement, and to end it immediately after. A tool like snakeviz can them visualize it for you.
On Fri, Mar 8, 2024, 18:26 Xavier Otazu Porter xotazu@cvc.uab.cat wrote:
I am not a python expert, but same behaviour here ...
NEST 3.6 (git master HEAD from february 12), Python 3.8.12, Rocky Linux 8.5
Xavier
*From:* Hans Ekkehard Plesser hans.ekkehard.plesser@nmbu.no *Sent:* Friday, March 8, 2024 3:24 PM *To:* users@nest-simulator.org users@nest-simulator.org *Subject:* [NEST Users] Strange interaction between NEST and IPython
Dear Python experts among the NEST Users!
I just notice a strange interaction between NEST and Ipython. In a freshly started Ipython, I execute the following three statements
import nest
n = nest.Create('parrot_neuron', positions=nest.spatial.free([(x, 0) *for* x *in* range(10000)]))
n
The last one takes extraordinarily long, over 10 seconds, I think. But if I instead do
print(n)
it executes instantaneously.
Also, if I do the same thing in python directly, just entering
n
shows the NodeCollection immediately.
Can anyone reproduce this and does anyone have an idea what might be going on?
I am on macOS 14.3.1 with Python 3.12.2, Ipython 8.22.2, and have checked with NEST 3.6 and a branch of recent master.
Best,
Hans Ekkehard
--
Prof. Dr. Hans Ekkehard Plesser
Department of Data Science
Faculty of Science and Technology
Norwegian University of Life Sciences
PO Box 5003, 1432 Aas, Norway
Phone +47 6723 1560
Email hans.ekkehard.plesser@nmbu.no
Home http://arken.nmbu.no/~plesser
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