Thank you very much for your answer. What I'm looking for is a simple procedure from Wing IDE so that my students would be able to debug the code they write for my class on parallel and concurrent programming. I want they to learn how to use mpi4py's mpi_comm_world as processes' communicator. Thus what I need is to launch X number of processes from Wing IDE and debug each of them as well as their interactions through mpi_comm_world. They will be working on python scripts like this: from mpi4py import MPI import numpy

comm = MPI.COMM_WORLD rank = comm.Get_rank()

passing MPI datatypes explicitly

if rank == 0: data = numpy.arange(1000, dtype='i') comm.Send([data, MPI.INT], dest=1, tag=77) elif rank == 1: data = numpy.empty(1000, dtype='i') comm.Recv([data, MPI.INT], source=0, tag=77)

automatic MPI datatype discovery

if rank == 0: data = numpy.arange(100, dtype=numpy.float64) comm.Send(data, dest=1, tag=13) elif rank == 1: data = numpy.empty(100, dtype=numpy.float64) comm.Recv(data, source=0, tag=13) I think i understood your previous suggestion on how to debug externally launched processes, but so far seems to me similar as using pdb to debug processes and I'm looking for a simpler debugging method which take advantage of graphic representation of stack, variables, etc that we have on Wing IDE.

Thank you very much for your answer. What I'm looking for is a simple procedure from Wing IDE so that my students would be able to debug the code they write for my class on parallel and concurrent programming. I want they to learn how to use mpi4py's mpi_comm_world as processes' communicator. Thus what I need is to launch X number of processes from Wing IDE and debug each of them as well as their interactions through mpi_comm_world. They will be working on python scripts like this: this:

from mpi4py import MPI
import numpy
 
numpy

comm = MPI.COMM_WORLD
rank = comm.Get_rank()
 
comm.Get_rank()

# passing MPI datatypes explicitly
 
explicitly
if rank == 0:
    data = numpy.arange(1000, dtype='i')
    comm.Send([data, MPI.INT], dest=1, tag=77)
elif rank == 1:
    data = numpy.empty(1000, dtype='i')
    comm.Recv([data, MPI.INT], source=0, tag=77)
 
tag=77)

# automatic MPI datatype discovery
 
discovery
if rank == 0:
    data = numpy.arange(100, dtype=numpy.float64)
    comm.Send(data, dest=1, tag=13)
elif rank == 1:
    data = numpy.empty(100, dtype=numpy.float64)
    comm.Recv(data, source=0, tag=13)

I think i understood your previous suggestion on how to debug externally launched processes, but so far seems to me similar as using pdb to debug processes and I'm looking for a simpler debugging method which take advantage of graphic representation of stack, variables, etc that we have on Wing IDE.