[MPICH] -nolocal for mpiexec ?

[Wei-keng Liao]

Rajeev,

I tried that but I don't know why it is not working on my machine.
Here is my mpd.hosts file used in mpdboot
% cat mpd.hosts
c1
c2
c3
c4

My host machine is not in mpd.hosts.
% mpdboot -n 4 -f mpd.hosts
% cat machines
c1
c2
c3
c4
c1
c2
c3
c4
% mpiexec -machinefile machines -n 4 hello
mpiexec: unable to start all procs; may have invalid machine names
     remaining specified hosts:
         192.168.1.14 (c4)

Using 3 and less nodes are fine. I ran all these on the host machine.

Wei-keng


On Tue, 1 Aug 2006, Rajeev Thakur wrote:

> Wei-keng,
>         Let's say you have 4 machines: host, node1, node2, node3. You run
> mpiexec from host and want the jobs to run only the 3 nodes. Here's what you
> do:
>
> * From host, start an MPD ring on all 4 machines using mpdboot.
>
> * Create a machine file containing
> node1
> node2
> node3
> node1
> node2
> node3
> (repeated as many times as needed to cover the maximum number of processes
> you want to run).
>
> * Then run the job from host as
> mpiexec -machinefile FILE -n NPROCS a.out
>
> NPROCS has to be <= the number of machines listed in the machinefile.
>
> Rajeev
>
>
>
>> -----Original Message-----
>> From: Wei-keng Liao [mailto:wkliao at ece.northwestern.edu]
>> Sent: Monday, July 31, 2006 10:58 PM
>> To: Rajeev Thakur
>> Cc: mpich-discuss at mcs.anl.gov
>> Subject: RE: [MPICH] -nolocal for mpiexec ?
>>
>> I tried -1, not working.
>> Based on mpiexec help page, it just tries not to run the 1st
>> proc locally.
>> So, the local machine eventually appears as one of the MPI node with
>> higher rank.
>>
>> Wei-keng
>>
>>
>> On Mon, 31 Jul 2006, Rajeev Thakur wrote:
>>
>>> Try the -1 option to mpiexec.
>>>
>>> Rajeev
>>>
>>>> -----Original Message-----
>>>> From: owner-mpich-discuss at mcs.anl.gov
>>>> [mailto:owner-mpich-discuss at mcs.anl.gov] On Behalf Of Wei-keng Liao
>>>> Sent: Monday, July 31, 2006 8:17 PM
>>>> To: mpich-discuss at mcs.anl.gov
>>>> Subject: [MPICH] -nolocal for mpiexec ?
>>>>
>>>>
>>>> How do I run mpdboot and mpiexec so I can run MPI jobs on non-local
>>>> machines? In mpich1, mpirun has an option -nolocal for not
>>>> running job on
>>>> local machine. How do I achieve the same effect iof -nolocal
>>>> on mpich2?
>>>>
>>>> Wei-keng
>>>>
>>>>
>>>
>>
>>
>