[Paraview] Problems with writing VTK in MPI

[Joachim Pouderoux]

Jose,

It looks like the file for time step 50 is incomplete: there is less values
than expected.
See, the files correspond to same mesh, only the "roh" point array is
different but file t50
is more than 6MB smaller than t0 which is not correct as data is written in
binary but not
compressed. So I guess there is a bug in your writing procedure but it is
not possible
to tell more without analysing its source code.

Best regards,


*Joachim Pouderoux*, PhD

*Technical Expert - Scientific Computing Team*
*Kitware SAS <http://www.kitware.fr>*


2017-03-29 16:31 GMT-04:00 José Luis López López <
jlopezfisica at ciencias.unam.mx>:

> Hi! Paraviewers,
>
> We are having problems with the output VTK files when running a Lattice
> Boltzmann simulation in parallel with MPI. I am not sure what could be the
> problem. The thing is that when executing the program in the front end
> there is no problem, however when sending sbatch with 64 processors the
> files most of the time do not write correctly. I am attaching a file and
> maybe you can guide me to solve the issue,
>
> warmly,
> Jose
>
>
> The files have square part that should not be there,
> ​
>  rho1_t.50.vtk
> <https://drive.google.com/a/ciencias.unam.mx/file/d/0B6DdhYTQYp2URXdsRDJIREVfLVk/view?usp=drive_web>
> ​​
>  rho1_t.0.vtk
> <https://drive.google.com/a/ciencias.unam.mx/file/d/0B6DdhYTQYp2UNmpXLVdrdkE2bGM/view?usp=drive_web>
> ​
>
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