[mvapich-discuss] Problems with mvapich2-1.7 while running osu_benchmarks

[Jonathan Perkins]

Hello, according to your description, it seems that you're having
trouble with launching mpi jobs using mpirun_rsh.  Are both of your ip
addresses reachable from each host?

I would suggest just using the hostnames in the host file as this will
work best if host resolution is working (eg. dns or /etc/hosts).  In
this case your hostfile will look like:

nodeA
nodeB


If you must use ip addresses, do not use 127.0.0.1 but replace it with
the ip address that the remote node can use to reach the launching
node.  For example:

nodeA (192.168.0.1)
nodeB (192.168.0.2)

Your hostfile should contain

192.168.0.1
192.168.0.2

and not

127.0.0.1
192.168.0.2

Hope this helps.

On Fri, Jan 20, 2012 at 2:24 AM, Venkateswara Rao Dokku
<dvrao.584 at gmail.com> wrote:
>
> Hi,
>     We are trying to run osu_benchmark tests on our customized OFED, we ran
> the following tests with the open-mpi
> 1. osu_acc_latency
> 2. osu_alltoall
> 3. osu_bcast
> 4.osu_bibw
> 5.osu_bw
> 6.osu_get_latency
> 7.osu_latency
> 8.osu_mbw_mr
> 9.osu_multi_lat
> 10.osu_put_latency
>
> they went fine.. when we tried to run the remaining tests viz.
> osu_get_bw,osu_latency_mt,osu_put_bibw,osu_bibw we found some issues with
> openmpi and it seems that those tests we have to run only with mvapich2. so
> we shifted to mvapich2-1.7, and we try to run those tests we are getting
> issues. the command used and the error is given below..
>
>
> command::
>
> mpirun_rsh -ssh -np 2 -hostfile /root/hostfile_test
> /root/mvapich2-1.7/osu_benchmarks/osu_get_bw
>
> error::
> connect [mt_checkin]: Connection refused
> [localhost.localdomain:mpirun_rsh][child_handler] Error in init phase,
> aborting! (1/2 mpispawn connections)
>
> the host file contains the  ip-addresses of the two nodes we want the test
> to run on statrting with the local ip address..
>
> can you help why we are getting this error i.e the root cause for this
> one,..
>
> Thanks for replying..
>
>
> --
> Thanks & Regards,
> D.Venkateswara Rao,
>
>
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>



-- 
Jonathan Perkins
http://www.cse.ohio-state.edu/~perkinjo