[petsc-users] HDF5 timestepping in PETSc 3.16

[Adrian Croucher]

hi

I am just testing out PETSc 3.16 and making the necessary changes to my 
code. Amongst other things I now have to add a 
PetscViewerHDF5PushTimestepping() call before starting to output 
time-dependent results to HDF5 using a PetscViewer.

I now also have to add this call before reading in sets of previously 
computed time-dependent results (for restarting a simulation from the 
results of a previous run).

The problem with this is that if I try to read in the results of any 
previous run, computed with an earlier version of PETSc (< 3.16), an 
error is raised because the time-dependent datasets in the file do not 
have the 'timestepping' attribute.

Is there something else I need to do to make this work?

- Adrian

-- 
Dr Adrian Croucher
Senior Research Fellow
Department of Engineering Science
University of Auckland, New Zealand
email: a.croucher at auckland.ac.nz
tel: +64 (0)9 923 4611