#1031: write index files for checkpoints --------------------------+------------------------------------------------- Reporter: rhaas | Owner: eschnett Type: enhancement | Status: reopened Priority: minor | Milestone: Component: Carpet | Version: Resolution: | Keywords: CarpetIOHDF5 --------------------------+------------------------------------------------- Changes (by rhaas):
* status: closed => reopened * resolution: fixed =>
Comment:
One gets sparse files by creating the datasets in the index file with the same extents as in the "heavy" data files but not writing any data into them. The one downside that the sparse files have is that the current hdf5_merge etc. are not smart enough to copy the sparse dataset as a sparse dataset, instead they would write "heavy" file with the datasets all filled with zeroes. Attached please find a patch that does this.