Description of problem
While trying to run the COBAHH example getting the above stated error.
Minimal code to reproduce problem
https://brian2.readthedocs.io/en/stable/examples/COBAHH.html
What you have already tried
Tried this solution : ZeroDivisionError when changing synaptic weights of large network with HH neurons
My OS: Windows
**Brian2 version: ** brian2 2.4.2 py39h2e07f2f_1
**gcc version: ** gcc version 8.1.0 (x86_64-posix-seh-rev0, Built by MinGW-W64 project)
Actual output (if relevant)
If adding :-
import brian2.codegen.cpp_prefs
brian2.codegen.cpp_prefs._compiler_supports_c99 = True
Getting the output.
Full traceback of error (if relevant)
ERROR Brian 2 encountered an unexpected error. If you think this is a bug in Brian 2, please report this issue either to the discourse forum at , or to the issue tracker at . Please include this file with debug information in your report: C:\Users\sudes\AppData\Local\Temp\brian_debug_cno58ko1.log Additionally, you can also include a copy of the script that was run, available at: C:\Users\sudes\AppData\Local\Temp\brian_script_gooe7wzq.py Thanks! [brian2]
Traceback (most recent call last):
File “E:\Programs\Anaconda\envs\venv\lib\site-packages\brian2\core\network.py”, line 897, in before_run
obj.before_run(run_namespace)
File “E:\Programs\Anaconda\envs\venv\lib\site-packages\brian2\groups\group.py”, line 1143, in before_run
self.create_code_objects(run_namespace)
File “E:\Programs\Anaconda\envs\venv\lib\site-packages\brian2\groups\group.py”, line 1136, in create_code_objects
code_object = self.create_default_code_object(run_namespace)
File “E:\Programs\Anaconda\envs\venv\lib\site-packages\brian2\groups\group.py”, line 1118, in create_default_code_object
self.codeobj = create_runner_codeobj(group=self.group,
File “E:\Programs\Anaconda\envs\venv\lib\site-packages\brian2\codegen\codeobject.py”, line 441, in create_runner_codeobj
return device.code_object(owner=group,
File “E:\Programs\Anaconda\envs\venv\lib\site-packages\brian2\devices\device.py”, line 297, in code_object
scalar_code, vector_code, kwds = generator.translate(abstract_code,
File “E:\Programs\Anaconda\envs\venv\lib\site-packages\brian2\codegen\generators\base.py”, line 262, in translate
translated = self.translate_statement_sequence(scalar_statements,
File “E:\Programs\Anaconda\envs\venv\lib\site-packages\brian2\codegen\generators\cython_generator.py”, line 208, in translate_statement_sequence
kwds = self.determine_keywords()
File “E:\Programs\Anaconda\envs\venv\lib\site-packages\brian2\codegen\generators\cython_generator.py”, line 364, in determine_keywords
user_func = self._add_user_function(varname, var, added)
File “E:\Programs\Anaconda\envs\venv\lib\site-packages\brian2\codegen\generators\cython_generator.py”, line 220, in _add_user_function
func_code = impl.get_code(self.owner)
File “E:\Programs\Anaconda\envs\venv\lib\site-packages\brian2\core\functions.py”, line 280, in get_code
self.availability_check()
File “E:\Programs\Anaconda\envs\venv\lib\site-packages\brian2\codegen\cpp_prefs.py”, line 278, in call
raise NotImplementedError('The “{}” function needs C99 compiler ’
NotImplementedError: The “exprel” function needs C99 compiler support
The above exception was the direct cause of the following exception:
Traceback (most recent call last):
File “E:\Documents\Sprekeler\cobahh.py”, line 57, in
run(1 * second, report=‘text’)
File “E:\Programs\Anaconda\envs\venv\lib\site-packages\brian2\units\fundamentalunits.py”, line 2434, in new_f
result = f(*args, **kwds)
File “E:\Programs\Anaconda\envs\venv\lib\site-packages\brian2\core\magic.py”, line 373, in run
return magic_network.run(duration, report=report, report_period=report_period,
File “E:\Programs\Anaconda\envs\venv\lib\site-packages\brian2\core\magic.py”, line 231, in run
Network.run(self, duration, report=report, report_period=report_period,
File “E:\Programs\Anaconda\envs\venv\lib\site-packages\brian2\core\base.py”, line 278, in device_override_decorated_function
return func(*args, **kwds)
File “E:\Programs\Anaconda\envs\venv\lib\site-packages\brian2\units\fundamentalunits.py”, line 2434, in new_f
result = f(args, **kwds)
File “E:\Programs\Anaconda\envs\venv\lib\site-packages\brian2\core\network.py”, line 1008, in run
self.before_run(namespace)
File “E:\Programs\Anaconda\envs\venv\lib\site-packages\brian2\core\base.py”, line 278, in device_override_decorated_function
return func(args, **kwds)
File “E:\Programs\Anaconda\envs\venv\lib\site-packages\brian2\core\network.py”, line 899, in before_run
raise BrianObjectException(“An error occurred when preparing an object.”, obj) from ex
brian2.core.base.BrianObjectException: Error encountered with object named “neurongroup_stateupdater”.
Object was created here (most recent call only, full details in debug log):
File “E:\Documents\Sprekeler\cobahh.py”, line 41, in
P = NeuronGroup(4000, model=eqs, threshold='v>-20mV’, refractory=3ms,
An error occurred when preparing an object. (See above for original error message and traceback.)
Doubt (if relevant)
I am not sure if my anaconda is linking to my gcc compiler path.
