[mpich-discuss] array_of_argv in the MPI_Comm_spawn_multiple

[Federico Golfrè Andreasi]

Here I send you a little test program:

- the manager.cpp file contains the manager part that initializes a Petsc
Session, prints some informations about the command line options and then
executes the "worker program" with MPI_Comm_spawn_multiple. The firts
command line option of the master must the executable name of the worker.
- the worker.cpp file prints informations about the command line options and
exit.

I use MPICH-2 and Petsc 2.3.3 and the gcc 1.4.2 compiler.


To execute the program I type:

mpiexec -n 2 ./manager ./worker -arg1 1 -arg2 2 -arg3 3 -arg4 4 -arg5 5
-arg6 6 -arg7 7 -arg8 8 -arg9 9 -arg10 10 -arg11 11 -arg12 12 -arg13 13
-arg14 14 -arg15 15 -arg16 16 -arg17 17 -arg18 18 -arg19 19 -arg20 20 -arg21
21 -arg22 22 -arg23 23 -arg24 24 -arg25 25 -arg26 26 -arg27 27 -arg28 28
-arg29 29 -arg30 30 -arg31 31 -arg32 32 -arg33 33 -arg34 34 -arg35 35 -arg36
36

Stopping at -arg35 35 the program executes.

Thank you very much!
Federico





2009/1/9 Rajeev Thakur <thakur at mcs.anl.gov>

>  Can you send us a small test program that demonstrates the error?
>
> Rajeev
>
>  ------------------------------
> *From:* mpich-discuss-bounces at mcs.anl.gov [mailto:
> mpich-discuss-bounces at mcs.anl.gov] *On Behalf Of *Federico Golfrè Andreasi
> *Sent:* Thursday, January 08, 2009 3:34 AM
> *To:* mpich-discuss at mcs.anl.gov
> *Subject:* Re: [mpich-discuss] array_of_argv in the
> MPI_Comm_spawn_multiple
>
> I noticed that problem when the argv has dimension more than about 50
> elements and 450 characters.
>
> Thank you,
> Federico
>
>
>
> 2009/1/7 Rajeev Thakur <thakur at mcs.anl.gov>
>
>>  How big is the argv you are passing?
>>
>> Rajeev
>>
>>  ------------------------------
>> *From:* mpich-discuss-bounces at mcs.anl.gov [mailto:
>> mpich-discuss-bounces at mcs.anl.gov] *On Behalf Of *Federico Golfrè
>> Andreasi
>> *Sent:* Wednesday, January 07, 2009 4:17 AM
>> *To:* mpich-discuss at mcs.anl.gov
>> *Subject:* [mpich-discuss] array_of_argv in the MPI_Comm_spawn_multiple
>>
>>   Hi,
>>
>>
>>         I've a problem in using the MPI_Comm_spawn_multiple.
>> When I use that function with a large number of arguments in the
>> array_of_argv parameter
>> the program execution freezes in the point.
>>
>> There is a maximum length of the argv or a maximum number of elements of
>> argv that can be used?
>>
>> Thank you!
>> Federico
>>
>>
>
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