[petsc-users] HDF5 corruption

[Jed Brown]

Adrian Croucher <a.croucher at auckland.ac.nz> writes:

> hi,
>
> One of the users of my PETSc-based code has reported that HDF5 output 
> files can be corrupted and unusable if e.g. the run is killed. I've just 
> done a bit of reading about this and it appears to be a known issue with 
> HDF5.
>
> Some people suggest flushing the HDF5 file periodically to help prevent 
> data loss. I had a look at PetscViewerFlush() but it doesn't seem to be 
> implemented for the HDF5 viewer- is that correct?

Correct, but I think we can and should implement it. In your research just now, were there subtleties beyond this call?

https://portal.hdfgroup.org/display/HDF5/H5F_FLUSH