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From: K. Charoenpornwattana Ter (kcharoen_at_[hidden])
Date: 2007-05-23 23:32:29


>
> Try some simple tests:
> - Does "tping -c 3" run successfully? (It should ping all the lamd's)
>

[ter_at_uftoscar test]$ tping -c 3 n0-13
  1 byte from 13 remote nodes and 1 local node: 0.006 secs
  1 byte from 13 remote nodes and 1 local node: 0.005 secs
  1 byte from 13 remote nodes and 1 local node: 0.005 secs

3 messages, 3 bytes (0.003K), 0.016 secs (0.368K/sec)
roundtrip min/avg/max: 0.005/0.005/0.006

- Does "lamexec N hostname" run successfully? (It should run
> "hostname" on all the booted nodes)
>

No, it doesn't work. It only show headnode's hostname. See below:

[ter_at_uftoscar ~]$ lamexec N hostname
uftoscar.latech
<freeze>

I, however, can execute "cexec hostname" with no problem.

- When you "mpirun -np 15 ring.out", do you see ring.out executing on
>
all the nodes? (i.e., if you ssh into each of the nodes and run ps,
>
do you see it running?
>

I only see one ring.out run on headnode, no ring.out running on other nodes.

Thanks
Kulathep