nest simulation does not receive events from a non-nest script #66
Description
Hi all,
I am running into the following issue with a very simple music example. I have a non-nest script sending spikes to a nest simulation. The latter simply consists of a parrot neuron that should just replicate the received events, and a spike detectors that should write the spikes to a file. Unfortunately, the file remains empty as if no spikes are received.
I debugged it as follows:
- use a nest script as a sender while keeping the original nest receiver. This works: the receiver writes appropriate spike events to the file. Meaning that the receiver should be fine.
- use the original non-nest sender, and a non-nest receiver (it does the same thing as the original nest receiver). This works as well. Meaning that the sender should be fine.
- use a nest sender and a nest receiver (both doing the same thing as the original scripts). This works too: the receiver writes appropriate events to the file.
The only case that does not work is when I have a non-nest sender and a nest-receiver. Do you have a clue why that could be the case? Code is as follows...
Non-nest sender
import music
import sys
timestep = 0.001
stoptime = 1.0 # This is the actual execution time, not the simulated time span
setup = music.Setup()
outp = setup.publishEventOutput("out")
firstId = 0
size = 1
buf = 1
outp.map (music.Index.GLOBAL,
base=firstId,
size=size,
maxBuffered=buf)
runtime = setup.runtime(timestep)
tickt = runtime.time()
while tickt <= stoptime:
# Send an event for each tick, util stoptime
outp.insertEvent(tickt, firstId, music.Index.GLOBAL)
runtime.tick()
tickt = runtime.time()
Nest receiver
import nest
N = 1
nest.SetKernelStatus({"overwrite_files": True})
meip = nest.Create ('music_event_in_proxy', N)
nest.SetStatus (meip, [{'port_name': 'spikes_in', 'music_channel': 0}])
delay=2.0
nest.SetAcceptableLatency('spikes_in', delay)
# Parrot neuron
n_in = nest.Create ("parrot_neuron", N)
nest.Connect(meip, n_in, 'one_to_one', {"weight":1.0, "delay": delay})
# Create a spike detecor
sdetector = nest.Create("spike_detector")
nest.SetStatus(sdetector, {"withgid": True, "withtime": True, "to_file": True,
"label": "receive", "file_extension": "spikes"})
nest.Connect(n_in, sdetector)
nest.Simulate (1000.0)
Music config file
[from]
binary=./sender.py
np=1
[to]
binary=./receiver_nest.py
np=1
from.out -> to.spikes_in [1]