[petsc-users] Parallel output in PETSc with pHDF5 and VTK

[Buesing, Henrik]

> > >>> Can PETSc use parallel HDF5?
> > >> Yeah, the implementation is in VecView_MPI_HDF5_DA and uses
> > >> H5FD_MPIO_COLLECTIVE if supported.  Did you build your HDF5 with
> > MPI?
> > >
> > > I just --download-hdf5. Do I need to do something else?
> >
> > That should configure it with whichever MPI PETSc is using.  How are
> > you concluding that it's only using rank 0?
> I have to ask back to the person working on the parallel IO. 
Ok. The guy was judging from a code part, that was irrelevant and not from doing a profile. 
Solved! Thank you!

Henrik