Hi Elena,

I've used the split (raw/meta) on several occasions for special purposes and 
when trying to decouple meta-data performance from raw data performance.

But, I've never used the multi-way driver. Indeed it does seem a bit like 
overkill to support both as I think the raw/meta split is the primary 
multi-case.

One thing, making HDF5 'smart' about H5open()'ing files created by split (or 
multi) driver. My recollection is that the lib is not smart enough to know
that the split driver is needed when opening a file so created and that caller 
is obligated to set file access props appropriately. In fact, I don't even think
the lib returns an error from H5open() that might suggest to caller that a 
split driver should be used. It'd be need if that was improved ;)

Mark'

From: Hdf-forum 
<[email protected]<mailto:[email protected]>>
 on behalf of Elena Pourmal 
<[email protected]<mailto:[email protected]>>
Reply-To: HDF Users Discussion List 
<[email protected]<mailto:[email protected]>>
Date: Monday, January 18, 2016 8:32 AM
To: HDF Users Discussion List 
<[email protected]<mailto:[email protected]>>
Subject: [Hdf-forum] Any users of the multi-file driver?

Hello,

We have been entertaining an idea of removing multi-file driver in the future 
releases of HDF5 and leaving the split driver only (it will need 
reimplementation since the split driver is a wrapper of the multi-file driver). 
Before we make any decision, we would like to know if anyone uses and what is 
your experience with the

  - 
<https://secure-web.cisco.com/1nGpvY3IzOhBKqzh6GJsP6NMRrou6rHtKKqwvx_rDxGZoQlvumycbs9O7fXKsDr9j1rI_-s2WlBgkdNHM6HwpqK8jvq-8h_VPBr1xSARvadM-jpIg67aEuOxTsgsRXj6MM8uTczI8bYtqZMFrj8OGW3vJlPh10WJ7qj_qihUhpW1hS_HOhcE-OzAXPTwwa7MfyknwiXMJha4bswES3PGF04vpQySKws_rng4VXeSnOJ8gXeGeBtJC8ooI-oSBS1LNM5mw-GnszqgwKhaGrvyc81OpCW5EEzD84G565QKG1_c1lcIDqlvY_PAUao8FaIbICzYUwmDrlFQs1B0qNXMdStJY6L0ckzkQmHHsSLBDTcM/https%3A%2F%2Fwww.hdfgroup.org%2FHDF5%2Fdoc%2FRM%2FRM_H5P.html#Property-SetFaplMulti>
 multi-file 
drive<https://secure-web.cisco.com/1nGpvY3IzOhBKqzh6GJsP6NMRrou6rHtKKqwvx_rDxGZoQlvumycbs9O7fXKsDr9j1rI_-s2WlBgkdNHM6HwpqK8jvq-8h_VPBr1xSARvadM-jpIg67aEuOxTsgsRXj6MM8uTczI8bYtqZMFrj8OGW3vJlPh10WJ7qj_qihUhpW1hS_HOhcE-OzAXPTwwa7MfyknwiXMJha4bswES3PGF04vpQySKws_rng4VXeSnOJ8gXeGeBtJC8ooI-oSBS1LNM5mw-GnszqgwKhaGrvyc81OpCW5EEzD84G565QKG1_c1lcIDqlvY_PAUao8FaIbICzYUwmDrlFQs1B0qNXMdStJY6L0ckzkQmHHsSLBDTcM/https%3A%2F%2Fwww.hdfgroup.org%2FHDF5%2Fdoc%2FRM%2FRM_H5P.html#Property-SetFaplMulti>r
  - split driver 
<https://secure-web.cisco.com/1nGpvY3IzOhBKqzh6GJsP6NMRrou6rHtKKqwvx_rDxGZoQlvumycbs9O7fXKsDr9j1rI_-s2WlBgkdNHM6HwpqK8jvq-8h_VPBr1xSARvadM-jpIg67aEuOxTsgsRXj6MM8uTczI8bYtqZMFrj8OGW3vJlPh10WJ7qj_qihUhpW1hS_HOhcE-OzAXPTwwa7MfyknwiXMJha4bswES3PGF04vpQySKws_rng4VXeSnOJ8gXeGeBtJC8ooI-oSBS1LNM5mw-GnszqgwKhaGrvyc81OpCW5EEzD84G565QKG1_c1lcIDqlvY_PAUao8FaIbICzYUwmDrlFQs1B0qNXMdStJY6L0ckzkQmHHsSLBDTcM/https%3A%2F%2Fwww.hdfgroup.org%2FHDF5%2Fdoc%2FRM%2FRM_H5P.html#Property-SetFaplSplit>

Thank you!

Elena
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Elena Pourmal  The HDF Group  
http://secure-web.cisco.com/159O6bSmWH0BjUfC8NZuNitBamQuSZ-Pb8yfxF-sRwLXF_HwkK3cyby4pCDE4EPHlvaj_uJWiVdLX9NEfJvaIUJW1W8fo7WVGMCLvO3YiZOKaqSoxi0zv-bqoiO_go0-44PlU3p617adjsvVRRR8fpOI8qXEE1nmjoMzPpY2J14CcL3YIoCiFXmJsbzqQsio5qFSg8lQYJjlMqWIVV5RWz4a4_hcYQxStS0X8C0RzJhqrX3u2OAwjPXjuS-wFrwU1PDSvwICM47tl5nQLCIAJSC-HknmcFnaKYAHkyOGdP8SqfzIpqrDOrGiJ6KzWd3e145SGvgjKvW3umH6jWez7vaCgGMn8xPgu_wGuMmJAWNI/http%3A%2F%2Fhdfgroup.org
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