Hi Kevin,
On Jul 29, 2010, at 3:36 PM, Kevin Harms wrote:
>
> When you parallel-hdf5, do all attribute and group creations need to be
> called collectively by all ranks?
Yes. All metadata modifications need to be collective operations.
> Specifically for attributes, do all ranks have to participate in the
> H5Awrite, or does only one rank write the data?
Currently, yes.
> Lastly, if one has a series of H5Awrites, can those be packaged together so
> that there are a bunch of small writes being done?
Not at this time.
Quincey
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