pl-mpi-dtime(1)            OpenBSD Reference Manual            pl-mpi-dtime(1)

     pl-mpi-dtime - pl-mpi run-time trace profiler

     pl-mpi-dtime [-b] [-i interval] file ...

     THe pl-mpi-dtime utility processes files produced by pl-mpi(1) or
     pl-mpi-test(1) with the -t switch.  It produces detailed metrics on the
     operation of the underlying system during processing.

     The options are as follows:

     -b           Show the per-index breakdown.  The pl-mpi-dtime utility dis-
                  plays both median and mean, but this will force display of
                  each index's statistics in addition.

     -i interval  If interval is 0 (the default), statistics will be gathered
                  and displayed once, and the system will exit.  If greater
                  than 0, the utility will poll at the requested interval (in
                  seconds) and update a display like top(1), showing only the
                  most recent results if terminal rows are exhausted.

     The pl-mpi-dtime utility accepts as arguments trace files generated by
     pl-mpi(1) and pl-mpi-test(1), which are in the format of dump-rank.txt,
     where ``rank'' is the MPI rank of the generating node.

     The pl-mpi-dtime utility was developed at the University of Latvia's IMCS
     by Kristaps Dzonsons <>.

     Breakdown mode (with the -b switch) doesn't display properly in polling
     mode.  The system also cannot check whether trace files are from differ-
     ent run-times.

     pl-mpi(1), pl-mpi-test(1), pl-mpi-gdtime(1).

OpenBSD 4.0                    December 22, 2006                             1