[ET Trac] [Einstein Toolkit] #1737: upate CarpetHDF5 reader in VisIt

[Einstein Toolkit]

#1737: upate CarpetHDF5 reader in VisIt
------------------------------+---------------------------------------------
 Reporter:  rhaas             |       Owner:                     
     Type:  enhancement       |      Status:  new                
 Priority:  minor             |   Milestone:                     
Component:  Other             |     Version:  development version
 Keywords:  VisIt CarpetHDF5  |  
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 Since the CarpetHDF5 reader
 (https://svn.cactuscode.org/VizTools/CarpetHDF5) was included in VisIt's
 main source code repo, we have not attempted to update that copy to the
 most current version. The coding style in that branch matches the official
 code but the patches do not apply on top of the official code due to
 ordering issues as well as some minor new changes to code formatting in
 the current (2.8.0) VisIt codebase.

 Since then, I have collected a number of bugfixes/improvements that are
 collected in various branches at https://bitbucket.org/rhaas80/carpethdf5
 . It would be good to eventually try and get the for_VisIt branch
 (https://bitbucket.org/rhaas80/carpethdf5/branch/for_VisIt) included in
 the main source code repo again.

 It contains some bug-fixes wrt how file metadata is cached, as well as
 number of fixes to reduce memory footprint, number of open files (required
 to work on large datasets on machines that limit the total number of open
 files), some improvements to error reporting and robustness when dealing
 with partially corrupted filesets as well as changes that allow a user to
 combine multiple HDF5 files into a single "virtual" VisIt database using
 .visit files.

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Ticket URL: <https://trac.einsteintoolkit.org/ticket/1737>
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