Hi, Mohamad,
Thanks for your information. I am starting writing my own plugin right
now. I am confused by two functions in the example code you shared with me.
The first one is in :
--------------------
under_fapl = H5Pcreate (H5P_FILE_ACCESS);
H5Pset_fapl_native(under_fapl);
--------------------
what does the actually means of H5Pset_fapl_native? Why we need these
two statements for the log vol plugin.
The second one is in:
---------
acc_tpl = H5Pcreate (H5P_FILE_ACCESS);
H5Pset_vol(acc_tpl, vol_id, &under_fapl);
file_id = H5Fcreate(file_name, H5F_ACC_TRUNC, H5P_DEFAULT, acc_tpl);
---------
Does H5Pset_vol build the relationship between the acc_tpl and vol_id
? If it is YES, does the next function H5Fcreate means that if we create a file
with acc_tpl property, the request on this file will handled by the vol with
vol_id ?
BTW, why we need under_fapl in H5Pset_vol, would you mind explain to
me?
Thanks.
Bin
--
At 2013-01-08 23:24:14,"Mohamad Chaarawi" <[email protected]> wrote:
Hi Bin,
The VOL work is not part of any release yet and still sitting in a separate
branch. We are aiming to release with 1.10.
You can access the branch from:
http://svn.hdfgroup.uiuc.edu/hdf5/features/vol
I have to warn you that this is not a release branch, but a development branch,
so things will change in the future. The VOL interface has been stable for a
while now, however with some changes/additions expected to the HDF5 library
interface, the VOL interface callbacks will change.
I also attached a sample C file that serves as a guide for adding an external
plugin. The H5VLnative.c under src/ would serve as a guide for implementing an
internal library specific plugin (which I don't think would be your case).
Thanks,
Mohamad
On 1/7/2013 10:43 PM, goon83 wrote:
Hi all,
I am planing to conduct some research on I/O optimization like “A Plugin
for HDF5 using PLFS for Improved I/O Performance and Semantic Analysis”, and I
need to write a plugin for "Virtual Object Layer". I have already downloaded
and installed the hdf5-1.8.10 source code. However, I have not found
anyplace/guide to start a new plugin. Would you all please give me some
guide or help ? Thanks in advance !
Bin Dong
--
_______________________________________________
Hdf-forum is for HDF software users discussion.
[email protected]http://mail.hdfgroup.org/mailman/listinfo/hdf-forum_hdfgroup.org
_______________________________________________
Hdf-forum is for HDF software users discussion.
[email protected]
http://mail.hdfgroup.org/mailman/listinfo/hdf-forum_hdfgroup.org
