I have filed a ticket for this:
https://svn.open-mpi.org/trac/ompi/ticket/972
On Apr 3, 2007, at 5:18 PM, Xie, Hugh wrote:
I think that workaround you purposed would resolve this problem.
-----Original Message-----
From: users-boun...@open-mpi.org [mailto:users-bounces@open-
mpi.org] On
Behalf Of Jeff Squyres
Sent: Tuesday, April 03, 2007 5:05 PM
To: Open MPI Users
Subject: Re: [OMPI users] Mpirun failed for machines not in the same
subnet.
Do your different subnets violate the assumptions listed here?
http://www.open-mpi.org/faq/?category=tcp#tcp-routability
We have not implemented any workarounds to say "subnet X is
routable to
subnet Y" because no one had asked for them. Such workarounds are
possible, of course, but I don't know what kind of timeframe we
would be
able to implement them in. Contributions would always be
accepted! :-)
Probably the easiest workaround would be a top-level MCA parameter
that
effectively tells OMPI to assume that *all* TCP addresses are routable
to each other. That might not be too difficult to implement.
On Apr 3, 2007, at 4:11 PM, Xie, Hugh wrote:
Hi,
I got the follow error message while running: 'mpirun -v -np 2
-machinefile hosts.txt testc.x'
Process 0.1.1 is unable to reach 0.1.0 for MPI communication.
If you specified the use of a BTL component, you may have forgotten a
component (such as "self") in the list of usable components.
---------------------------------------------------------------------
-
--
--
---------------------------------------------------------------------
-
--
--
Process 0.1.0 is unable to reach 0.1.1 for MPI communication.
If you specified the use of a BTL component, you may have forgotten a
component (such as "self") in the list of usable components.
---------------------------------------------------------------------
-
--
--
---------------------------------------------------------------------
-
--
--
It looks like MPI_INIT failed for some reason; your parallel process
is likely to abort. There are many reasons that a parallel process
can fail during MPI_INIT; some of which are due to configuration or
environment problems. This failure appears to be an internal
failure;
here's some additional information (which may only be relevant to an
Open MPI
developer):
PML add procs failed
--> Returned "Unreachable" (-12) instead of "Success" (0)
---------------------------------------------------------------------
-
--
--
The same commands works if the content in hosts.txt is in same
subnet.
Once I switch to hosts in different subnet, it stop working. I am
using ompi 1.2.
Please help.
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