traffic gathering

[zolia]

Hello beo, 

i am writing an application which lets to start various parallel mpi/pvm
programs. What could be the bet way to gather traffic statistics from
these programs. I just need to compare generated traffic diference
in between pvm and mpi versions of the save program. I could use some
traffic monitor like ntop, passing him hosts and ports. 

And here is other question. What could be fastest way to get all ports,
which are responsible for communication. 

Besides i could patch those pvm/mpi programs with statistics code, but it
should be simple enough and not interfere (i mean, that it would be easy
enough to patch :) with original code. What could be examples of such
code? 

thanx

====================================================================
Antanas Masevicius             Kaunas University of Technology
Studentu 48a-101               Computer Center
LT-3028 Kaunas                 LITNET NOC UNIX Systems Administrator
Lithuania                      E-mail: zolia at sc.ktu.lt