RE: information for profiling

Lewins, Lloyd J (llewins@msmail4.hac.com)
21 Nov 1995 14:47:06 -0800

>What we did in MPI-F/UTE profiling is to dump at generation time of
>a communicator
>the global translation of the ranks. At send/recv time
>we dump the local rank. Post mortem we then use translation table
>dumbed earlier to generate the global rank from the local rank.

How do you associate the send/recv entries in the trace with the translation
table? Do you use an integer context id, or some other method. If you use an
integer context id, how do you ensure that it is globally and temporaly
unique? I rely on global ranks to disambiguate the non-unique context id in
MPICH.

Lloyd Lewins
Hughes Aircraft Co.
llewins@msmail4.hac.com