Traceback (most recent call last):

  File "/p/project/jinm60/users/wybo1/Code/NEAST_models/BBP/tests/run_all_tests.py", line 2, in <module>

    import nest.lib.hl_api_exceptions as nestexceptions

  File "/p/home/jusers/wybo1/jureca/nest/nest-install/lib64/python3.11/site-packages/nest/__init__.py", line 64, in <module>

    from .ll_api_kernel_attributes import KernelAttribute  # noqa

    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

  File "/p/home/jusers/wybo1/jureca/nest/nest-install/lib64/python3.11/site-packages/nest/ll_api_kernel_attributes.py", line 22, in <module>

    from .ll_api import spp, sps, sr, stack_checker

  File "/p/home/jusers/wybo1/jureca/nest/nest-install/lib64/python3.11/site-packages/nest/ll_api.py", line 53, in <module>

    from . import pynestkernel as kernel  # noqa pylint: disable=no-name-in-module

    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

ImportError: libltdl.so.7: cannot open shared object file: No such file or directory

Apparently it doesn’t find pynestkernel.so (I think?). However, this file is definitely there.

wybo1@jrlogin09
~/.../site-packages/nest> pwd

/p/home/jusers/wybo1/jureca/nest/nest-install/lib64/python3.11/site-packages/nest

wybo1@jrlogin09
~/.../site-packages/nest> ls

__init__.py  
__pycache__ 
lib  ll_api.py  ll_api_kernel_attributes.py 
logic 
math  pynest-init.sli 
pynestkernel.so 
random  raster_plot.py 
server 
spatial 
spatial_distributions  versionchecker.py  visualization.py  voltage_trace.py

The problem also only manifests itself while running from a SLURM script.

I followed the install instruction here:

https://nest-simulator.readthedocs.io/en/stable/installation/noenv_install.html#noenv

And source the nest_vars.sh file according to the instructions:

`source /p/home/jusers/wybo1/jureca/nest/nest-install/bin/nest_vars.sh`

Also, `make installcheck` passes successfully (both from the login node and from a slurm script).

Cheers,

Willem

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Dr. Willem Wybo
Peter Grünberg Institute 15 - Neuromorphic Software Ecosystems
Forschungszentrum Jülich
www.fz-juelich.de/pgi/PGI-15

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