[mpich-discuss] how to use ifhn in machinefile in mpich2-1.3.2?

[Limin Gu]

On Mon, Sep 26, 2011 at 5:32 PM, Pavan Balaji <balaji at mcs.anl.gov> wrote:

>
> On 09/26/2011 03:43 PM, Limin Gu wrote:
>
>> Hi All,
>>
>> mpich2-1.3.2 is configured and built with default options.
>>
>> I have a machine file like this:
>>
>> n0 ifhn=172.20.20.100
>> n1 ifhn=172.20.20.101
>>
>
> You can just create the machinefile as:
>
> 172.20.20.100
> 172.20.20.101
>

I tried to have just the ip address, it didn't work.

[root at flatline examples]# mpiexec -f machinefile -n 2 ./cpi
Invalid node specification "172.20.20.100"
Invalid node specification "172.20.20.101"
Ctrl-C caught... cleaning up processes
[root at flatline examples]#

It works when machinefile is simply as:
n0
n1

[root at flatline examples]# mpiexec -f machinefile -n 2 ./cpi
Process 0 of 2 is on n0
Process 1 of 2 is on n1
pi is approximately 3.1415926544231318, Error is 0.0000000008333387
wall clock time = 0.002628
[root at flatline examples]#

Any idea what's wrong? Thank you!

Limin



> No rebuild is necessary.
>
>  -- Pavan
>
> --
> Pavan Balaji
> http://www.mcs.anl.gov/~balaji
>
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