H5Part development and discussion

[Andreas Adelmann <andreas.adelmann AT psi.ch>]

Collegues I would like to start/continue the discussion we had over lunch.


Because of performance reasons, a partial write w.r.t. to a subset of 
the mpi cores
would be very attractive.

Example: the cores 1 ... 3 are writing to the H5 file
while the codes 4 ... 7 are sending the data to core 1 and so on,
as shown below.


H5-FILE     ---------                                 
                  0         0
                  0         0
                  ----------
                  ^   ^    ^
                  |     |     |
writing       1    2    3       


sending      4 5 6 7            -> 1
                 8 9 10 11        -> 2
                  12 13 14 15   -> 3


Question: can we start H5 with a subset of MPI_COMM_WORLD (core 1,2,3 in 
the example above) ?

Andreas

--
Dr. sc. math. Andreas (Andy) Adelmann
Staff Scientist
Paul Scherrer Institut WBGB/132 CH-5232 Villigen PSI
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