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Cleanup old unused code. Edited couple comments.
Platforms tested:
modi4,pp
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Changed MPI_File_seek then MPI_File_write or MPI_File_read to just
MPI_File_write_at and MPI_File_read_at. Some compiler, e.g., IBM
mpcc_r does not support MPI_File_seek and MPI_File_read or MPI_File_write.
This is a better measurement against HDF5 performance since HDF5
uses MPI_File_write_at and MPI_File_read_at all the times.
It is a more thread safe to use MPI_xxx_at than the other seek then
read/write approaches.
Platforms tested:
modi4 (irix64 parallel), IBM sp2.
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Feature
Description:
Show simple performance of the MPIO and the HDF5-IO.
The mpi-perf.c is contributed by Robert Ross of ANL.
The perf.c is derived from mpi-perf.c
Platforms tested:
Modi4 (O2K, parallel)
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