Hi Stephane,
On Jun 15, 2011, at 4:44 PM, Stéphane Backaert wrote:
> Hello!
>
> Here is my context: I compute velocities in a 3D mesh. This mesh is divide in
> subdomain (cubes) for every MPI job. I can dump all the domain thanks to
> parallel hdf5 routines.
>
> But, I would like to dump also a slice of this domain via parallel hdf5 (I
> mean, I want to use a collective write). In this case, the slice is only
> included in a few subdomains. So, for the other subdomains/mpi job, the
> dimensions of their hyperslab part are null.
>
> For a collective I/O, all mpi-job must to pass through the CALL
> h5dwrite_f(...,...,data,dims,...). Some mpi-job (in fact, a lot!) have data
> and dims equal to zero.
>
> My code crashs! HDF5 complains about
>
> "H5Screate_simple(): zero sized dimension for non-unlimited dimension"
>
> How can I handle this without create a smaller communicator??
I believe that we have addressed this limitation with the 1.8.7
release. Can you give that a try?
Quincey
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