[Users] CarpetIOHDF5 recover failure with manual topology
yosef at astro.rit.edu
Tue Sep 10 15:03:35 CDT 2019
It seems that there may be multiple issues. The parfile I sent before
tests for NaNs in grid::x. grid::x is not a checkpointed variable. It
seems that with manual topology, the grid::x is filled with nans during
the recover step (the pointer is actually pointing to a new area of
memory). With standard topology, the array pointer and contents do not
change on recover. I have also seen NaNs in the recovered variables, but
this parfile doesn't show that.
On 9/9/19 4:24 PM, Yosef Zlochower wrote:
> I have been trying to debug why some runs I was performing could not
> recover from a checkpoint file, but would otherwise proceed as normal.
> I attached a minimalist parfile showing the problem. A small grid is
> manually distributed over 8 processors and terminates at iteration 2. An
> attempt at recover fails with nans on grid::x. If the manual topology
> section is commented out, no problems are seen.
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