The MPI-IO Test is built on top of MPI's I/O calls
and is used to gather timing information for
reading from and writing to file(s) using a
variety of I/O profiles. A data aggregation
capability is available and the user can pass down
MPI-IO, ROMIO, and file system specific hints. The
MPI-IO Test can be used for performance
benchmarking and, in some cases, to diagnose
problems with file systems or I/O networks.
