error: SEClamp mechanism does not exist

[ikitayama]

SEClamp is a built-in mech in NEURON, but I get this when executing @pramodk 's test.py script:

$ python test.py

 Duke, Yale, and the BlueBrain Project -- Copyright 1984-2020
 version id unimplemented

 Additional mechanisms from files
 CALIca.mod CALIkahp.mod CALIkc.mod CALIkdr.mod CALIna.mod Ca_conce.mod astrocyte.mod halfgap.mod tN1fAstro.mod tN1fN2.mod tN2fAstro.mod tN2fN1.mod

 Memory (MBs) :             After mk_mech : Max 27.5430, Min 27.5430, Avg 27.5430
 Memory (MBs) :            After MPI_Init : Max 27.5430, Min 27.5430, Avg 27.5430
 Memory (MBs) :          Before nrn_setup : Max 27.5430, Min 27.5430, Avg 27.5430
error: SEClamp mechanism does not exist
Aborted

How do I check if I built NEURON correctly; ie built-in mechanisms are linked?

[nrnhines]

An oversight. You have two work around options til we add it to CoreNEURON. 1) Add it to CoreNEURON yourself by analogy to how netstim.mod is added. i.e. in the coreneuron/coreneuron folder

$ find . -name netstim\*
./mechanism/mech/modfile/netstim.mod
$ grep -r -w netstim *
CMakeLists.txt:    netstim.mod
CMakeLists.txt:      ${CMAKE_CURRENT_BINARY_DIR}/netstim.cpp

The file to add is nrn/src/nrnoc/svclmp.mod
I actually prefer that method. The second method is to add svclmp.mod to your project. The difficulty is that you only want it there when you run nrnivmodl-core and not when you run nrnivmodl so you need to keep moving it or changing its name (extension), or actually changing the file name and its internal POINT_PROCESS name so it can exist in NEURON as well.

[pramodk]

@nrnhines : we need to discuss some details of svclmp.mod. I posted some questions on Slack.

@ikitayama : we will update you tomorrow about possible way to have this fixed.

[pramodk]

svclmp.mod was added in coreneuron in BlueBrain/CoreNeuron#381