www.neuron.yale.edu

Yeah, you're right, I'm going to just proceed without worrying about openmpi anymore. Sorry, what I said wasn't clear, openmpi was not installed "over" the old version, that is still there in /usr/bin (e.g. old open_info is there). I installed openmpi from sources (a tarball from from open...

The directions for pointing to the correct neuron installation make sense. Thank you for the guidance on the openmpi issue. I'm still a little unclear, was the --DNRN_ENABLE_MPI_DYNAMIC=ON option part of the build I just did? I should have said that I installed openmpi v4.0.3, over an older version ...

Ha! That worked! Output from 'mpiexec -n 2 nrniv -mpi ../src/parallel/test0.hoc': numprocs=2 NEURON -- VERSION 8.0.dev-109-g6d23a393 master (6d23a393) 2020-06-02 Duke, Yale, and the BlueBrain Project -- Copyright 1984-2019 See http://neuron.yale.edu/neuron/credits I am 1 of 2 I am 0 of 2 Thank you! ...

Hi. I have a bedeviliing issue setting up parallelism in neuron on linux (Ubuntu 18.04.4). When I run h.nrnmpi_init(), I get this error: mca_base_component_repository_open: unable to open mca_patcher_overwrite: /usr/lib/x86_64-linux-gnu/openmpi/lib/openmpi/mca_patcher_overwrite.so: undefined symbol:...