[mpich-discuss] how to make the hosts files

[Mandar Gurav]

I would suggest you to consult this page....

http://wiki.mcs.anl.gov/mpich2/index.php/Using_the_Hydra_Process_Manager

--Mandar Gurav

On Thu, May 12, 2011 at 4:02 PM, Leon Yuhanov <leon at philipchun.com> wrote:
> is there a way to run this process on multiple machines without a file??
> Leon Yuhanov
> IT Manager - Philip Chun Advanced Technology
> Cell: +614 16 029 852
> Email: leon at philipchun.com
>
>
> Mandar Gurav <mandarwce at gmail.com> wrote:
>
> Ohhh!
>
> You are running your job on a single machine! Just forget about the
> machinefile and all. Just execute
>
> "mpiexec -np 2 ./a.out"
>
> that's it.
>
> The machinefile or hosts file is required when you have 2(or more)
> machines with mpi installed on both machines and you want to run a
> single program the spawns across the two machines.
>
> -- Mandar Gurav
>
> On Thu, May 12, 2011 at 2:03 PM, Pavan Balaji <balaji at mcs.anl.gov> wrote:
>>
>> 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.
>>>
>>>
>>>
>>>
>>> _______________________________________________
>>> mpich-discuss mailing list
>>> mpich-discuss at mcs.anl.gov
>>> https://lists.mcs.anl.gov/mailman/listinfo/mpich-discuss
>>
>> --
>> Pavan Balaji
>> http://www.mcs.anl.gov/~balaji
>>
>
>
>
> --
> Mandar Gurav
> http://www.mandargurav.org
> _______________________________________________
> mpich-discuss mailing list
> mpich-discuss at mcs.anl.gov
> https://lists.mcs.anl.gov/mailman/listinfo/mpich-discuss
> _______________________________________________
> mpich-discuss mailing list
> mpich-discuss at mcs.anl.gov
> https://lists.mcs.anl.gov/mailman/listinfo/mpich-discuss
>



-- 
Mandar Gurav
http://www.mandargurav.org