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Paralel version not working

Posted: Tue May 24, 2011 10:45 pm
by shyam_u2
Hi ,

I have a neuronal network model. The serial implementation of the model works perfectly. The parallel version of the model works perfectly in serial mode ( when double clicking the hoc file). But it does not work with mpiexec -np -mpi command. Though it doesnt give me any error, I am not able to see anything in the output. Any suggestions or advice is very much appreciated and thankful.

Shyam

Re: Paralel version not working

Posted: Wed May 25, 2011 11:45 am
by ted
Diagnostic strategy: verify the following, in this sequence, for both the serial and parallel implementations:
existence of cells
connections between cells
--what source projects to which target
--weight and latency of each connection
inputs to the net
collection of simulation results

For examples of how to do this in a way that tries to reduce the onerousness of the task, see "Translating network models to parallel hardware in NEURON" (link on http://www.neuron.yale.edu/neuron/docs).

Re: Paralel version not working

Posted: Thu May 26, 2011 12:20 am
by shyam_u2
Thanks ted. The bug was very very simple. When running in parallel mode i didnt execute nrnivmodl. Since the mod files were already compiled in serial mode i thought i dont need to compile them again. I used to compile the mod files in serial mode by drag and drop. That is the reason why it worked in serial mode and not in parallel mode.

Shyam