Hi!
However, this does not completely solve the problem: now, for the second run of Simulate() the simulation is empty until the end of the previous run, and then the second run starts. I mean: nest.Simulate(250) # -> generates a simulation from 0 to 250 vm.n_events = 0 # data from previous runs is gone nest.Simulate(250). # -> This simulation goes from 250 to 500. It shows empty results between 0 and 250 for V, and the actual simulation between 250 and 500 for V. If we examine the voltmeter.events content after both runs, the entry 'times' shows values between 250 and 500, so the command vm.n_events = 0 resets the contents (I checked it), but NOT some internal time counter.
Indeed. The setting I gave you only removes the events from the specific device you’re using it on. Nothing else.
You can also reset
time by calling nest.biological_time = 0.
However, that comes with a big fat warning message printed to
your screen for good reasons.
Should I do a full nest.ResetKernel() and rebuilt everything (i.e., the network) for EACH run? No problem, although it sounds strange to me... ;-)
Short answer: Yes. This is what you should do.
There is an ongoing
discussion about resetting the network state
instead of completely destroying it (i.e. using ResetKernel)
and rebuilding it. A short summary for why we don’t support that
is that if you ask four people what a hypothetical ResetNetwork
function should do, you probably get five different opinions and
is extremely hard to track and reset each and every variable
involved in the simulation and it is not even clear to what they
should be reset to. Also see #1919
and the example pynest/examples/store_restore_network.py
that resulted from it.
Cheers,
Jochen!
-- Dr. Jochen Martin Eppler (he/him) Simulation and Data Lab Neuroscience Jülich Supercomputing Centre Institute for Advanced Simulation --------------------------------------------------------------------- Forschungszentrum Juelich GmbH 52425 Juelich Sitz der Gesellschaft: Juelich Eingetragen im Handelsregister des Amtsgerichts Dueren Nr. HR B 3498 Vorsitzender des Aufsichtsrats: MinDir Stefan Müller Geschaeftsfuehrung: Prof. Dr.-Ing. Wolfgang Marquardt (Vorsitzender), Karsten Beneke (stellv. Vorsitzender), Dr. Ir. Pieter Jansens, Prof. Dr. Astrid Lambrecht, Prof. Dr. Frauke Melchior ---------------------------------------------------------------------