How does NEURON implement implicit Euler

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mesorensen

How does NEURON implement implicit Euler

Post by mesorensen »

Hello,

We're working on porting NEURON models to some non-standard hardware, and we were wondering if you could point us to some documentation on how exactly NEURON implements its implicit Euler solver. We're interested in knowing details like whether you use Newton-Raphson,how you determine convergence, etc.

Thanks,
Michael
hines
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Re: How does NEURON implement implicit Euler

Post by hines »

The method is the same as explained in
http://www.neuron.yale.edu/ftp/neuron/p ... ffic84.pdf

No Newton, no convergence test.
For that the variable step solvers are used.

The single step starts in nrn/src/nrnoc/fadvance.c:fadvance()
The NEURON Book has a section 7.3 devoted to it.
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