[petsc-users] hdf5 and FILE_MODE_APPEND

[Matthew Knepley]

On Fri, Jan 20, 2012 at 4:00 PM, Jed Brown <jedbrown at mcs.anl.gov> wrote:

> On Fri, Jan 20, 2012 at 15:55, Matthew Knepley <knepley at gmail.com> wrote:
>
>> There is no need for append mode. HDF5 does not work that way. Just open
>> it up and write.
>
>
> As written, that would truncate the old file. Making this work might be as
> simple as adding a case for FILE_MODE_APPEND that opened the file
> H5F_ACC_RDWR.
>
>   /* Create or open the file collectively */
>   switch (hdf5->btype) {
>     case FILE_MODE_READ:
>       hdf5->file_id = H5Fopen(name, H5F_ACC_RDONLY, plist_id);
>       break;
>     case FILE_MODE_WRITE:
>       hdf5->file_id = H5Fcreate(name, H5F_ACC_TRUNC, H5P_DEFAULT,
> plist_id);
>       break;
>

I thought we have changed this for PyLith, but we did it differently. This
has been pushed.

   Matt

-- 
What most experimenters take for granted before they begin their
experiments is infinitely more interesting than any results to which their
experiments lead.
-- Norbert Wiener
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.mcs.anl.gov/pipermail/petsc-users/attachments/20120120/9fc2efe8/attachment.htm>