Add numeric solver to synapses #1208
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Bencher Report
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Could you also update |
clinssen
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Sep 11, 2025
doc/running/running_nest.rst
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| The synapse is allowed to contain an ``update`` block. Statements in the ``update`` block are executed whenever the internal state of the synapse is updated from one timepoint to the next; these updates are typically triggered by incoming spikes. The NESTML ``timestep()`` function will return the time that has elapsed since the last event was handled. | ||
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| Synapses in NEST are not allowed to have any nonlinear time-based internal dynamics (ODEs). This is due to the fact that synapses are, unlike nodes, not updated on a regular time grid. Linear ODEs are allowed, because they admit an analytical solution, which can be updated in a single step from the previous event time to the current event time. However, nonlinear dynamics are not allowed because they would require a numeric solver evaluating the dynamics on a regular time grid. | ||
| Synapses can have ODEs with linear and non-linear dynamics. In the case of linear dynamics, the ODEs are solved with the propagators provided by the ODE-toolbox; for non-linear dynamics, the ODEs are solved using a fourth order Runge-Kutta solver with adaptive timestep. |
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Can the tolerances be adjusted like in the neuron model? Could you add a reference to GSL or to the GSL solver?
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