[stdp_dopamine] Different concentrations for different number of threads - NEST Users

25 Jun 2019

Hi everyone,

I'm getting strangely different results if I use stdp_dopamine_synapse with
more than 1 local thread.
For instance, the mini-code bellow creates a connection with an initial
non-zero DA concentration and at t=1000 ms a spike arrives at the volume
transmitter.
If I run it with one thread I get an initial decay on the DA concentration
and then a bump at t=1000 ms. Which is the expected behavior.
But if I run the same thing with 2 threads, then I get just the decay. As
if the spike hasn't arrived at the volume transmitter.
Is this the expected behavior or is it maybe a bug?

Best,
Gui

[image: Screenshot from 2019-06-25 18-32-58.png]
[image: 1thread.png]

[image: 2threads.png]