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ipcontroller crash with MPI #728
I am new to the use of ipython for handling a cluster with MPI. I just
I have already sent an e-mail with the same content as this issue,
Again (as in the e-mail I sent previously) thanks for so gourgeous work you are doing..
In what environment are you running? It sounds like MPI is not properly allowing the controller to start its subprocesses, or they are failing to start for some other reason. Does it work if you don't use the MPIControllerLauncher, and instead only start the engines with MPI?
Sorry I had forgotten I wrote you. The problem was that I had enabled some features on the ipcluster_config.py on my mpi profile, file and I forgot to clean it up. Especifically I enabled the lines on "MPIExecControllerLauncher configuration" section, as you deduced from the log. Finally I fixed it by disabling those lines and adding the correct ones, namely:
c.IPClusterEngines.engine_launcher = 'IPython.parallel.apps.launcher.MPIExecEngineSetLauncher'
It was just a mistake of naives. Anyway thanks for your response; is good to know that there is support for such an important project.