I have a custom Jupyter kernel. It is specified using a kernel.json kernelspec.
An extract from kernel.json shows how to start the custom kernel:
source /opt/conda/bin/activate gdb_ipykernel && exec /opt/conda/envs/gdb_ipykernel/bin/python -m gdb_test.do_tests gdb_test._ipykernel -f {connection_file}
I would like to use this kernel with IPython-parallel. For example running ipcluster with several of these custom kernels.
I have created a new IPython profile
(ipython version 5.1.0)
ipython profile create --parallel --profile=gdb_gcc_par
This creates a profile folder with various configuration (.py) files.
db ipcluster_config.py ipengine_config.py ipython_config.py log security
history.sqlite ipcontroller_config.py ipython_config_old.py ipython_kernel_config.py pid startup
I can run ipython with a profile
ipython --profile gdb_gcc_par --debug
Output:
(root) dinne@654f3bb1ef03:~/.ipython/profile_gdb_gcc_par$ ipython --profile gdb_gcc_par --debug
[TerminalIPythonApp] IPYTHONDIR set to: /home/dinne/.ipython
[TerminalIPythonApp] Using existing profile dir: '/home/dinne/.ipython/profile_gdb_gcc_par'
[TerminalIPythonApp] Searching path ['/home/dinne/.ipython/profile_gdb_gcc_par', '/home/dinne/.ipython/profile_gdb_gcc_par', '/usr/local/etc/ipy
thon', '/etc/ipython'] for config files
[TerminalIPythonApp] Attempting to load config file: ipython_config.py
[TerminalIPythonApp] Looking for ipython_config in /etc/ipython
[TerminalIPythonApp] Looking for ipython_config in /usr/local/etc/ipython
[TerminalIPythonApp] Looking for ipython_config in /home/dinne/.ipython/profile_gdb_gcc_par
[TerminalIPythonApp] Loaded config file: /home/dinne/.ipython/profile_gdb_gcc_par/ipython_config.py
[TerminalIPythonApp] Looking for ipython_config in /home/dinne/.ipython/profile_gdb_gcc_par
[TerminalIPythonApp] Loaded config file: /home/dinne/.ipython/profile_gdb_gcc_par/ipython_config.py
Python 3.5.2 |Continuum Analytics, Inc.| (default, Jul 2 2016, 17:53:06)
Type "copyright", "credits" or "license" for more information.
IPython 5.1.0 -- An enhanced Interactive Python.
? -> Introduction and overview of IPython's features.
%quickref -> Quick reference.
help -> Python's own help system.
object? -> Details about 'object', use 'object??' for extra details.
IPython profile: gdb_gcc_par
[TerminalIPythonApp] Loading IPython extensions...
[TerminalIPythonApp] Loading IPython extension: storemagic
[TerminalIPythonApp] Starting IPython's mainloop...
In [1]:
If I introduce an error in ipython_config.py I see an error message, so I conclude that this configuration file is taken into account.
If I introduce an error in ipython_kernel_config.py I do not see any change, so I conclude that this configuration file is not taken into account?
How can I specify which kernel to use?
I found this site:
http://andrew.gibiansky.com/blog/ipython/ipython-kernels/
which includes this snippet:
c = get_config()
c.KernelManager.kernel_cmd = ["/path/to/executable/kernel_exe",
"{connection_file}"]
I added the snippet to ipython_config.py. This has no effect however.
Furthermore I see that kernel_cmd is deprecated
Some things I tried:
Try 1 (No effect)
ipcluster start --n=4 --KernelManager.kernel_cmd="['python', 'simple_kernel.py', '{con
nection_file}']"
Try 2 (no effect):
added to ~/.ipython/profile_gdb_gcc_par/ipython_config.py
c.KernelManager.kernel_cmd=['python', 'simple_kernel.py', '{connection_file}']
run
ipython --profile gdb_gcc_par
no effect.
