[MPICH] Problem setting up MPICH between a 32 bit INTEL and a 32 bit AMD machine

[Krishna Chaitanya]

Hi,
          Turns out that the settings in the /etc/hosts file on the AMD
machine was incorrect. So, mpdcheck -v -f mpd.hosts gives this :

AMD machine : ( outwit )
kc at outwit:~$ mpdcheck -v -f mpd.hosts
obtaining hostname via gethostname and getfqdn
gethostname gives  outwit
getfqdn gives  outwit.nitk.ac.in
checking out unqualified hostname; make sure is not "localhost", etc.
checking out qualified hostname; make sure is not "localhost", etc.
obtain IP addrs via qualified and unqualified hostnames;  make sure other
than 127.0.0.1
gethostbyname_ex:  ('outwit.nitk.ac.in', ['outwit'], ['172.16.54.54'])
gethostbyname_ex:  ('outwit.nitk.ac.in', ['outwit'], ['172.16.54.54'])
checking that IP addrs resolve to same host
now do some gethostbyaddr and gethostbyname_ex for machines in hosts file
checking gethostbyXXX for unqualified zeus
gethostbyname_ex:  ('zeus', [], ['172.16.54.71'])
checking gethostbyXXX for qualified zeus
gethostbyname_ex:  ('zeus', [], ['172.16.54.71'])


INTEL machine ( zeus )
kris.c1986 at zeus ~]$ mpdcheck -v -f mpd.hosts
obtaining hostname via gethostname and getfqdn
gethostname gives  zeus
getfqdn gives  zeus.nitk.ac.in
checking out unqualified hostname; make sure is not "localhost", etc.
checking out qualified hostname; make sure is not "localhost", etc.
obtain IP addrs via qualified and unqualified hostnames;  make sure other
than 127.0.0.1
gethostbyname_ex:  ('zeus.nitk.ac.in', ['zeus'], ['172.16.54.71'])
gethostbyname_ex:  ('zeus.nitk.ac.in', ['zeus'], ['172.16.54.71'])
checking that IP addrs resolve to same host
now do some gethostbyaddr and gethostbyname_ex for machines in hosts file
checking gethostbyXXX for unqualified outwit
gethostbyname_ex:  ('outwit', [], ['172.16.54.54'])
checking gethostbyXXX for qualified outwit
gethostbyname_ex:  ('outwit', [], ['172.16.54.54'])

               Seems to be ok. But I still get this error when I try
mpdcheck -c on the AMD comp :
kc at outwit:~$ mpdcheck -c zeus 33737
Traceback (most recent call last):
  File "/home/kc/mpich-install/bin/mpdcheck", line 103, in <module>
    sock.connect((argv[argidx+1],int(argv[argidx+2])))  # note double parens
  File "<string>", line 1, in connect
socket.error: (113, 'No route to host')


           The two machines are able to see each other on the network. Cant
exaplain why it complains that there is "No route to host"

Krishna Chaitanya K


On Thu, Feb 14, 2008 at 2:50 PM, Rajeev Thakur <thakur at mcs.anl.gov> wrote:

>  The second test times out perhaps indicates that there might be a
> firewall on the AMD machine. See the section A.3 of the installation
> guide.
>
> Rajeev
>
>  ------------------------------
> *From:* Krishna Chaitanya [mailto:kris.c1986 at gmail.com]
> *Sent:* Thursday, February 14, 2008 11:41 AM
> *To:* Rajeev Thakur
> *Cc:* mpich-discuss at mcs.anl.gov
> *Subject:* Re: [MPICH] Problem setting up MPICH between a 32 bit INTEL and
> a 32 bit AMD machine
>
> So, what is the error trying to convey? Googling for it, gave this.<http://tell11.utsi.edu/mpich2-1.0.6p1/bin/mpdcheck>
> I have flushed the IPtables on both the machines and the firewalls are
> de-activated. Could you please elaborate on what kind of settings I need to
> look into?
>
> Thanks,
> Krishna Chaitanya K
>
> On Thu, Feb 14, 2008 at 10:58 PM, Rajeev Thakur <thakur at mcs.anl.gov>
> wrote:
>
> >  It should be possible. mpdcheck is a tool to diagnose whether the
> > network configuration settings on the machines are ok or not, and whether a
> > process on one machine can talk to a process on the other. It looks like the
> > settings need to be fixed in some way.
> >
> > Rajeev
> >
> >  ------------------------------
> > *From:* owner-mpich-discuss at mcs.anl.gov [mailto:
> > owner-mpich-discuss at mcs.anl.gov] *On Behalf Of *Krishna Chaitanya
> > *Sent:* Thursday, February 14, 2008 10:26 AM
> > *To:* mpich-discuss at mcs.anl.gov
> > *Subject:* [MPICH] Problem setting up MPICH between a 32 bit INTEL and a
> > 32 bit AMD machine
> >
> >   Hi,
> >         In one of the previous posts, you had replied back saying MPICH
> > cannot be put to use between a 32 bit INTEL machine and a 64 bit AMD
> > machine. Is it possible to do so between an INTEL and an AMD machine, both
> > of them being 32 bit processors?
> >         Anyway, on trying mpdcheck -f mpd.hosts on the 32 bit AMD, I am
> > getting the following error :
> >    ipaddr via uqn (208.67.216.130) does not match via fqn (208.69.32.130
> > )
> >         And if I try the mpdcheck -s on the AMD node and mpdcheck -c on
> > the INTEL node, the client times out. The test message gets delivered with
> > the client and server swapped.
> >
> > Thanks,
> > Krishna Chaitanya K
> >
> >
> >
> >
> >
> > --
> > In the middle of difficulty, lies opportunity
> >
> >
>
>
> --
> In the middle of difficulty, lies opportunity
>
>


-- 
In the middle of difficulty, lies opportunity
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