Hi Peter,

I tried first with 2 nodes, but is was the same problem, it hang.  Then I tried with 1 node, and copied that output in my previous mail.  When I checked the process status (with 2 nodes), one of the migrate processes was using 100 %, the other was sleeping.  But after 15 minutes, still no output change.

Andy

Peter Beerli wrote:
Dear Andy,

you wrote that with openmpi:
  
avierstr@muscorum:~> mpiexec --hostfile hostfile -np 1  migrate-n
    


it does not work, but with lam-mpi
  
avierstr@muscorum:~/thomas> mpiexec -np 2  migrate-n
    

you started openmpi on only _one_ node, migrate needs at least _two_  
nodes to run
(as you did in lam-mpi)
migrate actually aborts when running on only one node, it should show  
an error message so, like this

zork>which mpirun
/usr/local/openmpi/bin/mpirun
zork>mpirun -machinefile ~/onehost -np 1 migrate-n
migrate-n
   =============================================
   MIGRATION RATE AND POPULATION SIZE ESTIMATION
   using Markov Chain Monte Carlo simulation
   =============================================
   compiled for a PARALLEL COMPUTER ARCHITECTURE
   Version debug 2.1.3   [x]
   Program started at   Mon Feb 13 09:03:45 2006



Reading N ...
Reading S ...

In file main.c on line 697
This program was compiled to use a parallel computer
and you tried to run it on only a single node.
This will not work because it uses a
"single_master-many_worker" architecture
and needs at least TWO nodes


Peter

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Andy Vierstraete
Department of Biology
University of Ghent
K. L. Ledeganckstraat 35
B-9000 Gent
Belgium
phone : 09-264.52.66
fax : 09-264.87.93
http://allserv.UGent.be/~avierstr/