Search found 1709 matches
- Thu Feb 20, 2025 7:55 am
- Forum: NEURON + Python
- Topic: Python Section syntax error
- Replies: 5
- Views: 16566
Re: Python Section syntax error
I see that >>> for sec in secList: print(f"{sec}_spine_neck") ... soma[0]_spine_neck dend[0]_spine_neck dend[1]_spine_neck dend[2]_spine_neck ... So you can see that those are all invalid variable names. You need a bit more text processing to get the array index at the end of the name or e...
- Thu Feb 20, 2025 7:26 am
- Forum: NEURON + Python
- Topic: Python Section syntax error
- Replies: 5
- Views: 16566
Re: Python Section syntax error
Just curious. What is the value of the stringCode: Select all
spine_neck = h.Section(name= f''{sec}_spine_neck'')
Code: Select all
f''{sec}_spine_neck''
- Thu Jan 23, 2025 7:45 am
- Forum: OS X
- Topic: NEURON 8.2 install / OS X 15.2 Sequoia / Python 3.12.7 Anaconda installation difficulties
- Replies: 3
- Views: 38475
Re: NEURON 8.2 install / OS X 15.2 Sequoia / Python 3.12.7 Anaconda installation difficulties
For several years now, we've been having a great deal of trouble maintaining the neuron.yale.edu website.It crashes every 8 days for an unknown reason. Only one or two persons, not me, know how to change content (and not all the types of content at that). Almost all user facing information, the exce...
- Thu Dec 05, 2024 1:44 pm
- Forum: Other questions
- Topic: Question about HOC syntax and section connection
- Replies: 2
- Views: 21968
Re: Question about HOC syntax and section connection
nrniv.exe: stack underflow The connect child, parent syntax is unfortunately limited in that the parent cannot be of the form obj.sec as the sequence of tokens syntactically conflicts with other syntax in the HOC language. That is, with that form of the connect statement, the parent must be a liter...
- Tue Oct 22, 2024 1:49 pm
- Forum: UNIX/Linux
- Topic: Flags to enable Avx256 and 512 compiling
- Replies: 3
- Views: 30764
Re: Flags to enable Avx256 and 512 compiling
I wrote to pkumbhar and hope Pramod can chime in on this.
- Tue Oct 22, 2024 1:38 pm
- Forum: MSWin
- Topic: Python cannot import neuron library on Windows install
- Replies: 9
- Views: 83473
Re: Python cannot import neuron library on Windows install
NEURON + python can work only if the python version is one of those listed in the name of the neuron installer. Presently the installer one gets from https://nrn.readthedocs.io/en/latest/ or https://nrn.readthedocs.io/en/8.2.6/ is https://github.com/neuronsimulator/nrn/releases/download/8.2.6/nrn-8....
- Fri Sep 27, 2024 7:36 am
- Forum: MSWin
- Topic: NEURON cann't open hoc
- Replies: 5
- Views: 23644
Re: NEURON cann't open hoc
Just to help isolate the problem... Please remove the two spaces from the "data driven model" folder name and try again (you can replace with - or _). If your model involves mod files, you may also have to rerun mknrndll or nrnivmodl. When you launch neuron, what banner is printed. Our int...
- Wed Sep 25, 2024 9:59 am
- Forum: UNIX/Linux
- Topic: os.execv
- Replies: 8
- Views: 25244
Re: os.execv
Another detail that gave me a bit of an itch but we can ignore for now is File "/home/pfortier/project/x86_64/special.nrn", line 123, in <module> os.execv(exe, sys.argv) FileNotFoundError: [Errno 2] No such file or directory I interpret that as a failure with respect to the value of exe. I...
- Wed Sep 25, 2024 7:14 am
- Forum: UNIX/Linux
- Topic: os.execv
- Replies: 8
- Views: 25244
Re: os.execv
The only change made was to the file permission of gstim.mod from 664 to 750 so I must assume that this was the problem. I glad the problem went away. That's not a bad reason to move on. However I'm quite puzzled how that change could fix a FileNotFoundError: [Errno 2] No such file or directory whe...
- Mon Sep 16, 2024 12:39 pm
- Forum: Parallel NEURON
- Topic: Presyns vs InputPresyns
- Replies: 1
- Views: 41062
Re: Presyns vs InputPresyns
Different numbers of InputPresyn are expected. InputPresyn is a memory optimized version of PreSyn and does not need to act as a threshold detector as it receives a spike from a PreSyn that was generated on another MPI rank. The number of InputPresyn on a rank is equal to the number of distinct gid ...
- Mon Sep 16, 2024 9:30 am
- Forum: NEURON + Python
- Topic: Type annotation of NEURON objects
- Replies: 3
- Views: 38137
Re: Type annotation of NEURON objects
Types for built in hoc classes (eg. Vector, File, etc.) have been augmented with a HocClass metaclass in order to recover the HOC internal indexing for object indexing of classes that had been broken by the change to the development version mentioned by ramcdougal above . The original (up through ve...
- Wed Jul 31, 2024 11:50 am
- Forum: UNIX/Linux
- Topic: Python/Neuron model runs on Windows but does not on Linux.(h.finitialize)
- Replies: 1
- Views: 22798
Re: Python/Neuron model runs on Windows but does not on Linux.(h.finitialize)
I'm afraid the code you copied above is incomplete. After installing the necessary modules in a python virtual environment, I'm stuck at $ python -i test.py NEURON: Couldn't find: kim.hoc near line 0 objref hoc_obj_[2] ^ I Started multiprocessing.pool.RemoteTraceback: """ Traceback (m...
- Fri Jun 28, 2024 3:39 am
- Forum: UNIX/Linux
- Topic: undefined reference to ‘memcpy@GLIBC_2.1’ compiling error
- Replies: 9
- Views: 35474
Re: undefined reference to ‘memcpy@GLIBC_2.1’ compiling error
I see that comments are starting to arrive https://github.com/neuronsimulator/nrn/issues/2949#issuecomment-2196286531 I'd say that we should move this discussion to that GitHub issue, but I'm not certain if you have permission to comment there. If so and it merely requires a GitHub account, then gre...
- Fri Jun 28, 2024 2:25 am
- Forum: UNIX/Linux
- Topic: undefined reference to ‘memcpy@GLIBC_2.1’ compiling error
- Replies: 9
- Views: 35474
Re: undefined reference to ‘memcpy@GLIBC_2.1’ compiling error
A colleague mentions: Ubuntu 22.04 is recent and I don’t think issue is about the system glibc+compiler compatibility. Seeing below, I see the compiler toolchain is coming from conda env and I suspect issue is coming from there: /home/kedoxey/.conda/envs/python3_9-NEW/bin/../lib/gcc/x86_64-conda-lin...
- Fri Jun 28, 2024 2:02 am
- Forum: UNIX/Linux
- Topic: undefined reference to ‘memcpy@GLIBC_2.1’ compiling error
- Replies: 9
- Views: 35474
Re: undefined reference to ‘memcpy@GLIBC_2.1’ compiling error
So the issue seems generic with respect to our wheel build environment. I think the fact that you can launch neurondemo with its libnrniv and the libnrnmech built when the installer was created is an important clue. The issue seems focused on the nrnivmodl make process. I imagine some detail is miss...