Reloading an HDF5 file

Hdf-forum archives
1

I'm trying to implement reloading of data stored in an HDF5 file. That is,
a process opens it, reads some data (several data sets in one group).
Another process then writes to the file and I'd like to be able to (with
the user pushing a button) have access to the new data added to the file.
Closing and re-opening the data sets doesn't seem to catch the changes
(presumably due to the data caches). Is there something I can do to clear
out the HDF5 caches? Will closing the file and re-opening it do it? Thanks.

2

Daniel

you will have to close and reopen the file. I don't think that even
flushing could do the trick...

HTH

-- dimitris

···

2012/7/24 Daniel Russel <drussel@gmail.com>

I'm trying to implement reloading of data stored in an HDF5 file. That is,
a process opens it, reads some data (several data sets in one group).
Another process then writes to the file and I'd like to be able to (with
the user pushing a button) have access to the new data added to the file.
Closing and re-opening the data sets doesn't seem to catch the changes
(presumably due to the data caches). Is there something I can do to clear
out the HDF5 caches? Will closing the file and re-opening it do it? Thanks.

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Hdf-forum is for HDF software users discussion.
Hdf-forum@hdfgroup.org
http://mail.hdfgroup.org/mailman/listinfo/hdf-forum_hdfgroup.org

3

Daniel

you will have to close and reopen the file. I don't think that even flushing could do the trick...

  Calling H5Fflush() will do the job. See the FAQ, here:

http://www.hdfgroup.org/hdf5-quest.html#grdwt

    Quincey

···

On Jul 24, 2012, at 11:48 AM, Dimitris Servis wrote:

HTH

-- dimitris

2012/7/24 Daniel Russel <drussel@gmail.com>
I'm trying to implement reloading of data stored in an HDF5 file. That is, a process opens it, reads some data (several data sets in one group). Another process then writes to the file and I'd like to be able to (with the user pushing a button) have access to the new data added to the file. Closing and re-opening the data sets doesn't seem to catch the changes (presumably due to the data caches). Is there something I can do to clear out the HDF5 caches? Will closing the file and re-opening it do it? Thanks.

_______________________________________________
Hdf-forum is for HDF software users discussion.
Hdf-forum@hdfgroup.org
http://mail.hdfgroup.org/mailman/listinfo/hdf-forum_hdfgroup.org

_______________________________________________
Hdf-forum is for HDF software users discussion.
Hdf-forum@hdfgroup.org
http://mail.hdfgroup.org/mailman/listinfo/hdf-forum_hdfgroup.org