Il 12/07/21 17:51, Matthew Knepley ha scritto:
On Mon, Jul 12, 2021 at 11:40 AM Matteo Semplice
<matteo.sempl...@uninsubria.it <mailto:matteo.sempl...@uninsubria.it>>
wrote:
Dear all,
I am experimenting with hdf5+xdmf output. At
https://www.xdmf.org/index.php/XDMF_Model_and_Format
<https://eur01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.xdmf.org%2Findex.php%2FXDMF_Model_and_Format&data=04%7C01%7Cmatteo.semplice%40uninsubria.it%7Cb7db50b8974544e2f5ed08d9454ce429%7C9252ed8bdffc401c86ca6237da9991fa%7C0%7C0%7C637617019536687302%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C2000&sdata=gBEr%2BY1%2BD4Tw8u8oUdEiqJQgMmsHhqXAKr2Z9xBH8Do%3D&reserved=0>
I read that "XDMF uses XML to store Light data and to describe the
data Model. Either HDF5[3]
<https://eur01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.hdfgroup.org%2FHDF5&data=04%7C01%7Cmatteo.semplice%40uninsubria.it%7Cb7db50b8974544e2f5ed08d9454ce429%7C9252ed8bdffc401c86ca6237da9991fa%7C0%7C0%7C637617019536697248%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C2000&sdata=8evP7yBnpwcrxdFeGdAo7PFNIDS7Xn1Q05pVMrHidH4%3D&reserved=0>
or binary files can be used to store Heavy data. The data Format
is stored redundantly in both XML and HDF5."
However, if I call DMView(dmda,hdf5viewer) and then I run h5ls or
h5stat on the resulting h5 file, I see no "geometry" section in
the file. How should I write the geometry to the HDF5 file?
Here below is what I have tried.
The HDF5 stuff is only implemented for DMPlex since unstructured grids
need to be explicitly stored. You can usually just define the
structured grid in the XML
without putting anything in the HDF5. We could write metadata so that
the XML could be autogenerated, but we have not done that.
Thanks for the clarification. It shouldn't be hard to produce the XML
from my code.
Just another related question: if I call VecView in parallel with the
HDF5 viewer, I get a single output file. Does this mean that data are
gathered by one process and written or it handles it smartly by
coordinating the output of all processes to a single file?
Matteo
