I don't think that is true, but I suggest you check the mpi4py examples. I believe all import does is import function definitions - it doesn't execute anything.
Sent from my iPad
On Sep 25, 2012, at 2:41 PM, mariana Vargas <mmarianav_at_[hidden]> wrote:
> MPI_init() is actually called when import MPI module from MPi package...
>
>
> On Sep 25, 2012, at 5:17 PM, Ralph Castain wrote:
>
>> You forgot to call MPI_Init at the beginning of your program.
>>
>> On Sep 25, 2012, at 2:08 PM, Mariana Vargas Magana <mmarianav_at_[hidden]> wrote:
>>
>>> Hi
>>> I think I'am not understanding what you said , here is the hello.py and next the command mpirun…
>>>
>>> Thanks!
>>>
>>> #!/usr/bin/env python
>>> """
>>> Parallel Hello World
>>> """
>>>
>>> from mpi4py import MPI
>>> import sys
>>>
>>> size = MPI.COMM_WORLD.Get_size()
>>> rank = MPI.COMM_WORLD.Get_rank()
>>> name = MPI.Get_processor_name()
>>>
>>> sys.stdout.write(
>>> "Hello, World! I am process %d of %d on %s.\n"
>>> % (rank, size, name))
>>>
>>> ~/bin/mpirun -np 70 python2.7 helloworld.py
>>> Hello, World! I am process 0 of 1 on ferrari.
>>> Hello, World! I am process 0 of 1 on ferrari.
>>> Hello, World! I am process 0 of 1 on ferrari.
>>> Hello, World! I am process 0 of 1 on ferrari.
>>> Hello, World! I am process 0 of 1 on ferrari.
>>> Hello, World! I am process 0 of 1 on ferrari.
>>> Hello, World! I am process 0 of 1 on ferrari.
>>> Hello, World! I am process 0 of 1 on ferrari.
>>> Hello, World! I am process 0 of 1 on ferrari.
>>> Hello, World! I am process 0 of 1 on ferrari.
>>> Hello, World! I am process 0 of 1 on ferrari.
>>> Hello, World! I am process 0 of 1 on ferrari.
>>> Hello, World! I am process 0 of 1 on ferrari.
>>>
>>> On Sep 25, 2012, at 4:46 PM, Ralph Castain <rhc_at_[hidden]> wrote:
>>>
>>>> The usual reason for this is that you aren't launching these processes correctly. How are you starting your job? Are you using mpirun?
>>>>
>>>>
>>>> On Sep 25, 2012, at 1:43 PM, mariana Vargas <mmarianav_at_[hidden]> wrote:
>>>>
>>>>> Hi
>>>>>
>>>>> I fact I found what is the origin of this problem and it is because all processes have rank 0, so I tested and in effect even when I send the clasical Hello.py give the same, how can I solved this?? Do I re installed every again???
>>>>>
>>>>> Help please...
>>>>>
>>>>> Mariana
>>>>>
>>>>>
>>>>>
>>>>> On Sep 24, 2012, at 9:13 PM, Mariana Vargas Magana wrote:
>>>>>
>>>>>>
>>>>>>
>>>>>> Yes you are right this is what it says but if fact the weird thing is that not all times the error message appears….I send to 20 nodes and only one gives this message, is this normal…
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>> On Sep 24, 2012, at 8:00 PM, Ralph Castain <rhc_at_[hidden]> wrote:
>>>>>>
>>>>>>> Well, as it says, your processes called MPI_Init, but at least one of them exited without calling MPI_Finalize. That violates the MPI rules and we therefore terminate the remaining processes.
>>>>>>>
>>>>>>> Check your code and see how/why you are doing that - you probably have a code path whereby a process exits without calling finalize.
>>>>>>>
>>>>>>>
>>>>>>> On Sep 24, 2012, at 4:37 PM, mariana Vargas <mmarianav_at_[hidden]> wrote:
>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>> Hi all
>>>>>>>>
>>>>>>>> I get this error when I run a paralelized python code in a cluster, could anyone give me an idea of what is happening? I'am new in this Thanks...
>>>>>>>>
>>>>>>>> mpirun has exited due to process rank 2 with PID 10259 on
>>>>>>>> node f01 exiting improperly. There are two reasons this could occur:
>>>>>>>>
>>>>>>>> 1. this process did not call "init" before exiting, but others in
>>>>>>>> the job did. This can cause a job to hang indefinitely while it waits
>>>>>>>> for all processes to call "init". By rule, if one process calls "init",
>>>>>>>> then ALL processes must call "init" prior to termination.
>>>>>>>>
>>>>>>>> 2. this process called "init", but exited without calling "finalize".
>>>>>>>> By rule, all processes that call "init" MUST call "finalize" prior to
>>>>>>>> exiting or it will be considered an "abnormal termination"
>>>>>>>>
>>>>>>>> This may have caused other processes in the application to be
>>>>>>>> terminated by signals sent by mpirun (as reported here).
>>>>>>>>
>>>>>>>> Thanks!!
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>>>
>>>>>>>>> Dr. Mariana Vargas Magana
>>>>>>>>> Astroparticule et Cosmologie - Bureau 409B
>>>>>>>>> PHD student- Université Denis Diderot-Paris 7
>>>>>>>>> 10, rue Alice Domon et Léonie Duquet
>>>>>>>>> 75205 Paris Cedex - France
>>>>>>>>> Tel. +33 (0)1 57 27 70 32
>>>>>>>>> Fax. +33 (0)1 57 27 60 71
>>>>>>>>> mariana_at_[hidden]
>>>>>>>>
>>>>>>>> _______________________________________________
>>>>>>>> users mailing list
>>>>>>>> users_at_[hidden]
>>>>>>>> http://www.open-mpi.org/mailman/listinfo.cgi/users
>>>>>>>
>>>>>>> _______________________________________________
>>>>>>> users mailing list
>>>>>>> users_at_[hidden]
>>>>>>> http://www.open-mpi.org/mailman/listinfo.cgi/users
>>>>>>
>>>>>> _______________________________________________
>>>>>> users mailing list
>>>>>> users_at_[hidden]
>>>>>> http://www.open-mpi.org/mailman/listinfo.cgi/users
>>>>>
>>>>> _______________________________________________
>>>>> users mailing list
>>>>> users_at_[hidden]
>>>>> http://www.open-mpi.org/mailman/listinfo.cgi/users
>>>>
>>>> _______________________________________________
>>>> users mailing list
>>>> users_at_[hidden]
>>>> http://www.open-mpi.org/mailman/listinfo.cgi/users
>>>
>>> _______________________________________________
>>> users mailing list
>>> users_at_[hidden]
>>> http://www.open-mpi.org/mailman/listinfo.cgi/users
>>
>> _______________________________________________
>> users mailing list
>> users_at_[hidden]
>> http://www.open-mpi.org/mailman/listinfo.cgi/users
>
> _______________________________________________
> users mailing list
> users_at_[hidden]
> http://www.open-mpi.org/mailman/listinfo.cgi/users
|
![[Flag]](../../../../../community/mirrors/flag-us.gif){kind=small}