[mpich-devel] initializing ROMIO at MPI_Init time

[Rob Latham]

Our friends working on the HDF5 library want to clean up HDF5 metadta at 
finalize time.  So, they put an attribute on MPI_COMM_SELF and have the 
delete function make a few MPI-IO routines to write out dirty metadata 
blocks.

Except ROMIO beat them to it and hoked a delete function on 
MPI_COMM_SELF, so they end up making MPI_FILE_* calls after romio's shut 
down.

The easy, if not exactly user-friendly, workaround is to tell them to 
initialize romio early on: call MPI_Init() then call MPI_FILE_OPEN with 
any parameters, then hook up their attributes.

What if I want to initialize ROMIO in the MPI_Init path?   ROMIO's 
initialization makes a few MPI attribute calls, as I said, so is there a 
point after which that facility is availalbe?  Is the attached patch the 
totally wrong way to do this?

==rob


-- 
Rob Latham
Mathematics and Computer Science Division
Argonne National Lab, IL USA
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