[Bioclusters] MPI installation problem, pls help!!!

ying xu xuying_pro at yahoo.com
Mon Sep 18 08:31:17 EDT 2006

Thanks for all of you! I finally get it work now. The solution is to disable the firewall on the fc5 machine.  It just blocks the mpi communication.

Michael Edwards <miedward at gmail.com> wrote: So you have the two computers connected with a cross-over ethernet
cable?  If you used a regular cable, strange things could happen,
though I would expect nothing to work in that case...

Are both machines set up with a static IP or is one of the machines
acting as a DNS server?  Are both machines allowing incoming traffic
on that port (ie, not blocked by firewall)?  Check /etc/hosts and make
sure both machines know about the other?

There are lots and lots of reasons you would get a "no route to host"
message, these are just some offhand thoughts.

On 9/17/06, ying xu  wrote:
> Hello:
>     I installed mpich2 on a ubuntu 6.06 machine, then share the install
> directory with a FC5 machine by using NFS. These two machines were connected
> to each other directly by a cable. The ubuntu machine is connected to a
> router which connects to internet.
>     My problem is that "when I 'mpdcheck -s' on ubuntu machine, "mpdcheck -c
> ubuntu-machine port " on FC5 succeed. But I can't do it reversely. I mean
> "when I 'mpdcheck -s' on FC5 machine, "mpdcheck -c fc5 port" failed with the
> following error:
> --------------------------------------------------------------------------------------------
> Traceback (most recent call last):
>   File "/home/xuying/mpich2-install/bin/mpdcheck", line
> 103, in ?
> sock.connect((argv[argidx+1],int(argv[argidx+2])))  # note
> double parens
>   File "", line 1, in connect
> socket.error: (113, 'No route to host')
> --------------------------------------------------------------------------------------------
> please help!
> ---------------------------------------------------------------------------------------------
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