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

[Jed Brown]

"Buesing, Henrik" <hbuesing at eonerc.rwth-aachen.de> writes:

>>> 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?