My program get stuck ... Bug ?

[Wei-keng Liao]

Hi, Adrien

Can you send me the codes with Boost::mpi removed?

Also, please let me know the command line you used.
Essentially, I need the info about what number of cored are
available and how many did you use. Are you using a
parallel file system? (What file system do you use?)

Wei-keng

On Apr 29, 2014, at 2:21 PM, BERCHET ADRIEN wrote:

> Hi, thank you for your quick answer.
> 
> I am using the version 1.4.1 of PnetCDF and mpiexec --version says : mpiexec (OpenRTE) 1.4.3. And I am currently testing on Ubuntu 12.04 - 64 bits.
> 
> I tried the  sample program you joined and it works fine. I runned it several hundreds of times with no issue.
> 
> I also tried to remove Boost::mpi from my code but it does not change anything.
> 
> Regards,
> 
> ---
> Adrien Berchet
> 
> Institut P'
> Cnrs - Université de Poitiers - Ensma
> UPR 3346
> Département D2 : Fluides, Thermique, Combustion
> Axe Hydrodynamique et Écoulements Environnementaux
> SP2MI - Téléport 2
> Boulevard Marie et Pierre Curie, BP 30179
> F86962 Futuroscope Chasseneuil Cedex - France
> 
> Bureau : 165
> Mail : adrien.berchet at univ-poitiers.fr
> Téléphone : 05 49 49 69 51
>  
> On Tue, 29 Apr 2014 13:20:59 -0500, Wei-keng Liao wrote:
> 
>> Hi, Adrien
>> 
>> Please let us know what version of PnetCDF you are using? Also, version of the MPI.
>> Your codes look fine to me (at least for the PnetCDF part).
>> 
>> If the problem only happened when the number of MPI processes is larger than the number of available cores, maybe it is caused by MPI-IO. Have you seen the same problem happened to a pure MPI-IO program?
>> 
>> A sample MPI-IO program can be found in
>> 
>> https://svn.mcs.anl.gov/repos/mpi/mpich2/trunk/src/mpi/romio/test/coll_perf.c
>> Wei-keng
>> 
>> On Apr 29, 2014, at 12:35 PM, BERCHET ADRIEN wrote:
>> 
>>> Hi there, I am not sure it is the good place to ask this but I don't know where I can get help about it ... I wrote a very little code to write NetCDF files using pnetcdf. Most of the time it work well and the netcdf file is properly generated (I checked with ncdump). But sometimes, the program just get stuck and runs indefinitely (it seems to happen only when the number of MPI processes is larger than the number of available cores but I am not sure about this). The program get stuck when it calls ncmpi_put_vara_double_all(). Could someone have a look on the code and tell me what is wrong please ? I looked for a solution for hours but could not find anything. Thank you very much ! Adrien -- Adrien Berchet Institut P' Cnrs - Université de Poitiers - Ensma UPR 3346 Département D2 : Fluides, Thermique, Combustion Axe Hydrodynamique et Écoulements Environnementaux SP2MI - Téléport 2 Boulevard Marie et Pierre Curie, BP 30179 F86962 Futuroscope Chasseneuil Cedex - France Bureau : 165 Mail : adrien.berchet at univ-poitiers.fr Téléphone : 05 49 49 69 51