mpiexec architecture questions...

[Rayson Ho]

Hi,

I am trying to see how difficult it is to create a real TM library for
Gridengine (SGE), so that SGE also can use mpiexec. I am reading the
mpiexec code and have some questions:

1) from the mpiexec diagram (generated from the source), there's something
called the "listener"... what is it, and what is it for??

2) And also, why is there a difference between an MPICH/GM job and an
MPICH/P4 job?? ("code M*p+0" is the root of code M*p+1...n for the P4
case)

TIA,
Rayson

P.S. I have a
hack(http://email.osc.edu/pipermail/mpiexec/2003/000521.html), but it is
not as nice as a real TM library.
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