[MPICH] MPICH_PORT_RANGE open questions

Martin Schwinzerl martin.schwinzerl at stud.uni-graz.at
Wed Jul 5 08:50:09 CDT 2006

Dear all,

I've still problems / open questions regarding the usage of the 
and would be very thankful if somebody here could help me :

As discussed earlier 
I've so far not succeeded to limit the port range of mpd et al by 
storing the desired port range into an env. variable
(cf example below)

my open questions :

Since Ralph Butler was able to demonstrate a working MPICH2 with the 
I would like to ask, if this was achieved using the developer version 
from CVS, or the "public" version 1.0.3 ?

Is the MPICH_PORT_RANGE variable sensitive to other enviroment variables 
so that there might be an interference ?

example :

mas at thph037214:~> export MPICH_PORT_RANGE=8100:8200
mas at thph037214:~> echo $MPICH_PORT_RANGE
mas at thph037214:~> mpd --echo &
[1] 31058
mas at thph037214:~> 1047

mas at thph037214:~> mpdallexit
[1]+  Done                    mpd --echo

System information :

mpich2-1.0.3 , Compiled with Intel's icc 9.0 or gcc 4.x (aboves example
is reproducible with both of them), python 2.4.1,  network consists at 
the moment
for testing purposes of two OpenSuSE 10.1 powered Pentium4 class computers.

Many thanks in advance !

 Best regards

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