[MPICH] mpich2 program hangs
Rajeev Thakur
thakur at mcs.anl.gov
Thu Aug 2 07:55:23 CDT 2007
This doesn't usually happen. It could even be something wrong with the
network card/driver on one of the machines. Can you run it on a single
machine? Can you run it on another pair of machines?
Rajeev
> -----Original Message-----
> From: owner-mpich-discuss at mcs.anl.gov
> [mailto:owner-mpich-discuss at mcs.anl.gov] On Behalf Of si ceng
> Sent: Thursday, August 02, 2007 4:23 AM
> To: mpich-discuss at mcs.anl.gov
> Subject: [MPICH] mpich2 program hangs
>
> Dear all:
> I installed mpich2-1.0.5p4 on two machines and tried the example cpi.
> the two machines are machine1 and machine2.
> I can run ssh/rsh without password on both machines.
>
> when I only use one machine for computation, it returned good result.
>
> when I use two machines,
>
> my mpd.hosts is:
> machine1
> machine2
>
> I ran mpdboot -n 2 -f mpd.hosts
>
> I ran mpdtrace, the output is :
> machine1
> machine2
>
> when I ran mpiexec -n 5 examples/cpi:
> the output is
> Process 0 of 5 is on machine1
> Process 2 of 5 is on machine2
> Process 4 of 5 is on machine1
> Process 3 of 5 is on machine2
> Process 1 of 5 is on machine2
>
> then the program stop there and no output then.
> Can anyone help?
>
> thanks
>
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