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In parallel HDF5, attribute writes are all collective.
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LDAmorim
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Jul 9, 2021
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| E_x.resetDataset( { Datatype::DOUBLE, { mpi_size * 2, 10, 6, 8 } } ); | ||
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| // HDF5 Attribute writes are unfortunately collective |
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Thank you!
This PR makes it very clear and I think it will prevent other users (like myself in the future) from doing the mistake I was doing (mentioned in #1021 - as part of the replies).
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Glad this helps. Yes, the HDF5 attribute limitations are unfortunate, definitely forgot to document the implications on constant record components more clearly :)
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In parallel HDF5, attribute writes are all collective.
Also document another PHDF5 constrain with chunking from #916, which is now default-on.
Document for a question in #1021 (comment)
Close #1021