RE: [Pympi-users] Idle as the console/ idlelib.PyShell.ModifiedInterpreter

[Julian C. <rjc...@cs...>]

Hi Pat

I re-built pyMPI from cvs and was able to re-produce your test. For
instance, see following test:

Python 2.4 (pyMPI 2.1b4) on sunos5
Type "copyright", "credits" or "license()" for more information.
...
IDLE 1.1      ==== No Subprocess ====
>>> import mpi
>>> jump = mpi.rank * 25000
>>> mpi.synchronizedWrite( mpi.rank,jump,"\n" )
0 0
1 25000
>>>
It WILL freeze if you don't use '-n' in the command line though i.e.
% mpirun -np 4 pyMPI -i pyMPI_idle.py -n

HOWEVER If I load and run a script from within Idle:
1. This statement calc's to zero because mpi.rank appears to not return a
number:
    jump = TotalSteps * (mpi.rank + offset)
2. This statement causes a perma-freeze, until I kill everything:
    mpi.synchronizedWrite( mpi.rank,jump,"\n" )
    (At this point the master process (mpi.rank = 0) is stuck in
recv_message() )
Both statements appeared to work when I ran them interactively

regards

Julian Cook