[MPICH] -nolocal for mpiexec ?

[Rajeev Thakur]

There is something wrong with the networking setup on c4 then. It says
invalid machine name. Can you ssh to it? If you can, and cannot detect any
other problem, then try running the mpdcheck utility as described in the
install guide.

Rajeev


> -----Original Message-----
> From: Wei-keng Liao [mailto:wkliao at ece.northwestern.edu] 
> Sent: Tuesday, August 01, 2006 4:20 PM
> To: Rajeev Thakur
> Cc: mpich-discuss at mcs.anl.gov
> Subject: RE: [MPICH] -nolocal for mpiexec ?
> 
> 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
> >>>>
> >>>>
> >>>
> >>
> >>
> >
> 
>