minrk/ipython — comment on commit 540ed0251a3ddf347fa77f987dfd8c4bbfbe2e73
File: docs/examples/newparallel/wave2D/parallelwave.py line 205
By Carreau:

@minrk,

Hi, I'm trying one of your example on parallel computing which throw me an error. Am I doing smth wrong or need the example update ?

```
./parallelwave.py --grid 200 200 --save
Running [200, 200] system on [8, 1] processes until 1.000000
vector inner-version, Wtime=0.308797, norm=0.143518
Traceback (most recent call last):
File "./parallelwave.py", line 207, in
u_last = view.gather('u_last', block=True)
File "", line 2, in gather
File "/Users/matthiasbussonnier/ipython/IPython/parallel/client/view.py", line 59, in sync_results
ret = f(self, *args, **kwargs)
File "", line 2, in gather
File "/Users/matthiasbussonnier/ipython/IPython/parallel/client/view.py", line 48, in save_ids
ret = f(self, *args, **kwargs)
File "/Users/matthiasbussonnier/ipython/IPython/parallel/client/view.py", line 728, in gather
return r.get()
File "/Users/matthiasbussonnier/ipython/IPython/parallel/client/asyncresult.py", line 104, in get
raise self._exception
IPython.parallel.error.CompositeError: one or more exceptions from call to method: gather
[0:apply]: NameError: name 'u_last' is not defined
[1:apply]: NameError: name 'u_last' is not defined
[2:apply]: NameError: name 'u_last' is not defined
[3:apply]: NameError: name 'u_last' is not defined
[4:apply]: NameError: name 'u_last' is not defined
[5:apply]: NameError: name 'u_last' is not defined
[6:apply]: NameError: name 'u_last' is not defined
[7:apply]: NameError: name 'u_last' is not defined
```