Search found 27 matches

by CCohen
Tue Feb 13, 2024 4:44 pm
Forum: Parallel NEURON
Topic: Calling MPI_Abort() from HOC
Replies: 5
Views: 14959

Re: Calling MPI_Abort() from HOC

Hi Michael, The last version of abrt.mod, above, now compiles on 8.2.2. However, it does not abort anything but rather generates a segmentation violation in a test as you had performed (see below). Charles NEURON -- VERSION 8.2.2 release/8.2 (93d41fafd) 2022-12-15 Duke, Yale, and the BlueBrain Proje...
by CCohen
Wed Jan 03, 2024 10:56 am
Forum: Parallel NEURON
Topic: Calling MPI_Abort() from HOC
Replies: 5
Views: 14959

Re: Calling MPI_Abort() from HOC

Thank you very much, Michael. Unfortunately, abrt.mod did not compile on nrn 8.2.2, the last version available at the NSG WebPortal. Would a backward-compatible fix be possible? Details on the compilation error follow. Best regards, Charles Relevant compilation error on 8.2.2 on OSX: NEURON -- VERSI...
by CCohen
Sun Dec 10, 2023 11:05 am
Forum: Parallel NEURON
Topic: Calling MPI_Abort() from HOC
Replies: 5
Views: 14959

Calling MPI_Abort() from HOC

Hello, I'm wondering how to call MPI_Abort() from HOC, in the context of an MPI-run simulation on UNIX. The aim is to quit all hosts, including the master, without first receiving all returnable pc.working() calls. The following attempt, among others, did not work. Charles system("MPI_Abort(MPI...
by CCohen
Fri Oct 27, 2017 12:22 pm
Forum: Anatomically detailed models
Topic: Vext and the extracellular mechanism
Replies: 3
Views: 22150

Re: Vext and the extracellular mechanism

Hi Ted, I am not sure I was well understood. I hope you do not mind if I clarify. If periaxonal delta represents its radius, then the first layer of the myelin sheath is at a distance delta from the axolemma. Notwithstanding the radius of the myelin sheath (considering it as collapsed and just outsi...
by CCohen
Tue Oct 24, 2017 8:53 pm
Forum: Anatomically detailed models
Topic: Vext and the extracellular mechanism
Replies: 3
Views: 22150

Vext and the extracellular mechanism

I would first like to ask how Vext is calculated at a given node in a stretch of cable (of defined length and diameter) with one layer of extracellular inserted. Is Vext generated from the Im of that node multiplied by its lateral surface area, xraxial and length? Im here would be subtracted by the ...
by CCohen
Mon Oct 27, 2014 7:18 am
Forum: MSWin
Topic: Problem compiling InterViews on cygwin: recipe for cursor.lo
Replies: 13
Views: 26365

Re: Problem compiling InterViews on cygwin: recipe for curso

Dr. Hines,

Compilation is complete and NEURON is running. Thank you for your help.

Best regards,
Charles
by CCohen
Wed Oct 22, 2014 6:51 am
Forum: MSWin
Topic: Problem compiling InterViews on cygwin: recipe for cursor.lo
Replies: 13
Views: 26365

Re: Problem compiling InterViews on cygwin: recipe for curso

I downloaded nrniv10.ico as instructed from the hg repository. I re-extracted the tar.gz and copied the file into ../src/mswin. A new related error arises, consisting of "icon file `../../src/mswin/nrniv10.ico' does not contain icon data." Please see the relevant terminal output below. Tha...
by CCohen
Wed Oct 08, 2014 11:13 am
Forum: MSWin
Topic: Problem compiling InterViews on cygwin: recipe for cursor.lo
Replies: 13
Views: 26365

Re: Problem compiling InterViews on cygwin: recipe for curso

Dr. Hines, I am using the latest repository codes for IV (07.10.2014) and nrn (nrn-7.3.rel-1173). Compilation of IV occurs without a hitch. Configuration of nrn works, but making it does not. I tried a few different nrn configurations and essentially one type of error arises at the make level: the a...
by CCohen
Mon Oct 06, 2014 5:47 am
Forum: MSWin
Topic: Problem compiling InterViews on cygwin: recipe for cursor.lo
Replies: 13
Views: 26365

Re: Problem compiling InterViews on cygwin: recipe for curso

Hello Dr. Hines,

I hope you do not mind my "manually" bumping this post.

Perhaps you may suggest me a specific cygwin subpackage I could downgrade to in the meantime, which would allow this problem to be solved?


Thanks!
Charles
by CCohen
Mon Sep 15, 2014 10:32 am
Forum: MSWin
Topic: Problem compiling InterViews on cygwin: recipe for cursor.lo
Replies: 13
Views: 26365

Re: Problem compiling InterViews on cygwin: recipe for curso

Replacing #if defined(__SIZEOF_POINTER__) && __SIZEOF_POINTER__ > __SIZEOF_LONG__ with #if 1 || (defined(__SIZEOF_POINTER__) && __SIZEOF_POINTER__ > __SIZEOF_LONG__) in cursor.cpp (iv/src/lib/IV-Win) allowed cursor.lo to be made. Running sizeof.cpp as instructed yielded the same valu...
by CCohen
Fri Sep 12, 2014 2:42 pm
Forum: MSWin
Topic: Problem compiling InterViews on cygwin: recipe for cursor.lo
Replies: 13
Views: 26365

Problem compiling InterViews on cygwin: recipe for cursor.lo

Hello, I am having trouble compiling InterViews (iv-18) with cygwin on Windows 8.1. The problem seems related to the recipe for cursor.lo (cursor.cpp) contained in src/lib/IV-Win. Configuration seems to run without a hitch. The problem arises at the make level. Please see below: CCo@CC ~/iv $ ./conf...
by CCohen
Mon Aug 18, 2014 12:14 pm
Forum: Getting started
Topic: Extracellular: one layer
Replies: 1
Views: 1948

Extracellular: one layer

Hello, In NEURON 7.3, inserting extracellular in a given section with only the following parameters defined, xraxial[0], xg[0], xc[0] and e_extracellular leads to a default insertion in the same section of xraxial[1], xg[1] and xc[1] initialized to default values. I would like to implement a strateg...
by CCohen
Wed Jul 30, 2014 7:45 am
Forum: Optimization
Topic: # quad forms = 0 means praxis returns by itself
Replies: 1
Views: 13693

# quad forms = 0 means praxis returns by itself

Hello,

I would like a clear explanation for the rules by which Praxis "returns by itself" when the user sets the "# quad forms" to 0 in the MulRunFitter[0] Optimize Praxis GUI.
by CCohen
Mon Apr 01, 2013 10:12 pm
Forum: Getting started
Topic: How to use area(x) and L
Replies: 3
Views: 2521

Re: How to use area(x) and L

I created a bunch of segments that comprise a section with Neuroleucida. I import my morphology into NEURON and implement an nseg strategy based on d_lambda... It is the area of a subset of these bunch of segments that I still wish to obtain. I have understood how to use L: if I want the total lengt...
by CCohen
Sun Mar 31, 2013 3:03 pm
Forum: Getting started
Topic: How to use area(x) and L
Replies: 3
Views: 2521

How to use area(x) and L

Hi, Very basic question... still learning how to talk to NEURON... Wondering how to get lengths and areas of segments that are subsections of a section in the oc> prompt. So for example, I wish to know the area of segments 0-5 of a given section that has 100 segments. How would I ask the oc> prompt ...