SystemError: unknown opcode when scatter/gather /pull/push

Commencez par ipyparallel/util.py, plus précisément par le point d’entrée _pull mentionné dans le traceback, et reproduisez l’affectation et la récupération avec dview avec les versions de Python, IPython et ipyparallel indiquées. Vérifiez scatter, gather, pull et push sur le cluster Linux/Windows ; c’est terminé lorsque ces opérations fonctionnent sans l’erreur unknown-opcode ni segmentation fault.

I am running a cluster with Linux/windows machines.

I cannot any longer use scatter/gather/pull/push variables.

In windows this is the error the engines print in the screen

`[1;31m---------------------------------------------------------------------------
[1;31mSystemError Traceback (most recent call last)
[1;32m in ()

[1;32m/home/julian/anaconda3/lib/python3.5/site-packages/ipyparallel/util.py in _pull(keys)

[1;31mSystemError: unknown opcode2017-06-01 20:01:09.640 [IPEngineApp] Exception in apply request:
[1;31m---------------------------------------------------------------------------
[1;31mSystemError Traceback (most recent call last)
[1;32m in ()

[1;32m/home/julian/anaconda3/lib/python3.5/site-packages/ipyparallel/util.py in _pull(keys)

[1;31mSystemError: unknown opcode

`
On linux it generates a seg fault.

On the session I am using as a console (linux) I get the following

`In [6]: dview["qwerty"]=33

In [7]: dview["qwerty"]
[0:apply]:
---------------------------------------------------------------------------SystemError Traceback (most recent call last) in ()
/home/julian/anaconda3/lib/python3.5/site-packages/ipyparallel/util.py in _pull(keys)
SystemError: unknown opcode

[1:apply]:
---------------------------------------------------------------------------SystemError Traceback (most recent call last) in ()
/home/julian/anaconda3/lib/python3.5/site-packages/ipyparallel/util.py in _pull(keys)
SystemError: unknown opcode

[2:apply]:
---------------------------------------------------------------------------SystemError Traceback (most recent call last) in ()
/home/julian/anaconda3/lib/python3.5/site-packages/ipyparallel/util.py in _pull(keys)
SystemError: unknown opcode

[3:apply]:
---------------------------------------------------------------------------SystemError Traceback (most recent call last) in ()
/home/julian/anaconda3/lib/python3.5/site-packages/ipyparallel/util.py in _pull(keys)
SystemError: unknown opcode
`

I am on python 3.5.2, using ipython 4.0.2 and ipyparallel ( all systems ) 6.0.2

I checked google and this does not look like being reported by anybody else.

This has worked fine in the past. First time I am facing this issue

JC