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Dear Steven and MPB users,
I am using MPI-MPB (Linux 2.4.21-37.0.1.EL, gcc 3.2.3, mpich) to analyze 2D
photonic crystal, such as supercell and line defect structure. It is
strange that for the same control file, I get different band
digram when I use one and two processors. The result got by one processor
is correct, while repeated bands are obtained if two processors are used. For
example, if num-bands is 16, 9th band to 16th is exactly the same
as 1st to 8th. I can never go to higher frequency by increasing num-bands.
Does anyone have any idea about this problem?
Another problem with MPI-MPB is the first two dimensions transposed as
mentioned in user reference. Use mpb-data -r -n 32 epsilon.h5, I still cannot
get correct image (I can if use non-mpi version mpb). Is there any thing
wrong with my commands?
Thanks,
Lingling |
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