[mpich-discuss] how to make the hosts files

[Pavan Balaji]

Is there an actual machine with the name "host1" or "host2" in your setup?

If you are just running it on the local node, you should not give the 
-machinefile or -f option.

  -- Pavan

On 05/12/2011 03:28 AM, hyunduk kim wrote:
>
> Thanks for your response
> However, my setup is not working.
>
> In my check progress.
> 1) I installed mpich2 on intel muti-core 2 cpu machine
> 2) check : /etc/hosts file
>      127.0.0.1               localhost.localdomain localhost
>      ::1                        localhost6.localdomain6 localhost6
>
> 3) made the machinefile for mpiexec : /usr/local/mpich2/machine/machinefile
>
>   host1:6
>   host2:6
>
> 4) run : [root at francium machine]# mpiexec -n 10 -machinefile
> ./machinefile /usr/local/mpich2-1.3.2p1/examples/cpi
>     ==> I received messages as below
>           ssh: connect to host host1 port 22: Connection timed out
>           ssh: connect to host host2 port 22: Connection timed out
>
>    Question is :
> 1) why do I setup passwordless login among the two hosts?
> 2) Mpich2 was installed on the just multi-core 2 cpu machine. Why dose
> the mpiexec try to connect host1 and host2 using port 22 ?
> 3) Is there other method for defining the machinefile on the multi-core
> 2 cpu machine ?
>
>   I will attach my log files.
>
>
>
>
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-- 
Pavan Balaji
http://www.mcs.anl.gov/~balaji