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<div class="moz-cite-prefix">Il 12/07/21 17:51, Matthew Knepley ha
scritto:<br>
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<blockquote type="cite" cite="mid:CAMYG4Gmttpz=-i2vpC6Ve0gi5dH2tAU4twTQAhKwxOFBLhOAAg@mail.gmail.com">
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<div dir="ltr">On Mon, Jul 12, 2021 at 11:40 AM Matteo Semplice
<<a href="mailto:matteo.semplice@uninsubria.it" moz-do-not-send="true">matteo.semplice@uninsubria.it</a>>
wrote:<br>
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<p>Dear all,</p>
<p> I am experimenting with hdf5+xdmf output. At <a href="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" originalsrc="https://www.xdmf.org/index.php/XDMF_Model_and_Format" shash="R50qtb7nC/ZlBDdiZIPM7SH9q+XzIeq6rwFJvqUPGT2JhlmXLMGmTJdz+0Q1YqZ3jYuYx85BLOECIkEpgmp1LRdTNuSa3sy3KTCQTFUouMj7OY3IFj/Aivaj3dii3QFI9SS5Z0CFGk2OT5wPOHKlvdBkx5egzMFdZydrIoHRc5o=" target="_blank" moz-do-not-send="true">https://www.xdmf.org/index.php/XDMF_Model_and_Format</a>
I read that "XDMF uses XML to store Light data and to
describe the data Model. Either HDF5<a rel="nofollow" href="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" originalsrc="https://www.hdfgroup.org/HDF5" shash="ldYZv0fHVrr1+NZjp5+iSoZjTJgIyXBToS9lF/MOmfL+JutMtEIWKBSBkLJBJgGdmrj48O6c5V/XfiSGq2PjEwOLVJuJQoslfkxaZ3FtNjuk/I23ylWxKrRDbm/Le6A2j7RAuBAG24pTKmWQmxaKo/15PiqOQ6emQ0WdWcEiz0M=" target="_blank" moz-do-not-send="true">[3]</a> or
binary files can be used to store Heavy data. The data
Format is stored redundantly in both XML and HDF5."</p>
<p>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?<br>
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<p>Here below is what I have tried.</p>
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<div>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</div>
<div>without putting anything in the HDF5. We could write
metadata so that the XML could be autogenerated, but we have
not done that.</div>
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<p>Thanks for the clarification. It shouldn't be hard to produce the
XML from my code.<br>
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<p>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?<br>
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<p>Matteo<br>
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