[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. But if built and linked correctly, it should work in parallel with PETSCViewerHDF5Open and VecView?