[Users] Patch: Use smaller chunk size for Carpet HDF5 I/O

[Erik Schnetter]

Following up on a discussion on the AEI Damiana mailing list I suggest this patch, which should reduce the memory requirements for recovering from compressed checkpoint files:



Reduce the chunk size when writing 3D HDF5 files by setting the z extent to 1.

HDF5 datasets have to be stored in chunks when checksums or compression is used.  The chunk size determines the memory requirements for reading files.

-erik

-- 
Erik Schnetter <schnetter at cct.lsu.edu>   http://www.cct.lsu.edu/~eschnett/


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