Hi all,
The HDF Group is working on a new high-level API to make parallel HDF5 programming easier and we've published a draft RFC on our web-site:
http://www.hdfgroup.uiuc.edu/RFC/HDF5/HPC-High-Level-API/H5HPC_RFC-2010-09-28.pdf
http://www.hdfgroup.uiuc.edu/RFC/HDF5/HPC-High-Level-API/H5HPC_RFC-2010-09-28.docx
(Both documents are identical)
If you are interested in such things, please give it a read and send me any feedback you have. Also, feel free to circulate to others might be able to give us some feedback.
Thanks,
Quincey