[mpich-discuss] mpdboot fails
Robert Kubrick
robertkubrick at gmail.com
Wed Aug 27 14:17:32 CDT 2008
This is what I have:
iMac
====
$ mpdcheck -v
obtaining hostname via gethostname and getfqdn
gethostname gives iMac.local
getfqdn gives iMac.local
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: ('imac.local', [], ['192.168.2.1', '169.254.51.159'])
*** gethostbyaddr failed for this hosts's IP 192.168.2.1
gethostbyname_ex: ('imac.local', [], ['192.168.2.1', '169.254.51.159'])
*** gethostbyaddr failed for this hosts's IP 192.168.2.1
checking that IP addrs resolve to same host
now do some gethostbyaddr and gethostbyname_ex for machines in hosts
file
iMac:$ mpdcheck -l
*** gethostbyaddr failed for this hosts's IP 192.168.2.1
*** gethostbyaddr failed for this hosts's IP 192.168.2.1
iMac:$ cat /etc/hosts
##
# Host Database
#
# localhost is used to configure the loopback interface
# when the system is booting. Do not change this entry.
##
127.0.0.1 localhost
255.255.255.255 broadcasthost
::1 localhost
192.168.2.1 iMac imac
192.168.2.2 wlaptop
wlaptop
======
$ mpdcheck -v
obtaining hostname via gethostname and getfqdn
gethostname gives wlaptop
getfqdn gives wlaptop
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: ('wlaptop', [], ['127.0.1.1', '192.168.2.2'])
*** first ipaddr for this host (via wlaptop) is: 127.0.1.1
gethostbyname_ex: ('wlaptop', [], ['127.0.1.1', '192.168.2.2'])
checking that IP addrs resolve to same host
now do some gethostbyaddr and gethostbyname_ex for machines in hosts
file
wlaptop:$ mpdcheck -l
**********
Your unqualified hostname resolves to 127.0.0.1, which is
the IP address reserved for localhost. This likely means that
you have a line similar to this one in your /etc/hosts file:
127.0.0.1 $uqhn
This should perhaps be changed to the following:
127.0.0.1 localhost.localdomain localhost
**********
wlaptop:$ cat /etc/hosts
127.0.0.1 localhost
127.0.1.1 wlaptop
192.168.2.1 imac iMac
192.168.2.2 wlaptop
# The following lines are desirable for IPv6 capable hosts
::1 ip6-localhost ip6-loopback
fe00::0 ip6-localnet
ff00::0 ip6-mcastprefix
ff02::1 ip6-allnodes
ff02::2 ip6-allrouters
ff02::3 ip6-allhosts
On Aug 27, 2008, at 12:23 PM, Rajeev Thakur wrote:
> Did you run all the mpdcheck tests as described in Appendix A.2 of the
> installation guide?
>
> Rajeev
>
>> -----Original Message-----
>> From: owner-mpich-discuss at mcs.anl.gov
>> [mailto:owner-mpich-discuss at mcs.anl.gov] On Behalf Of Robert Kubrick
>> Sent: Wednesday, August 27, 2008 10:10 AM
>> To: mpich-discuss at mcs.anl.gov
>> Subject: Re: [mpich-discuss] mpdboot fails
>>
>> I tried mpdcheck -s/-c and it works between the 2 machines both ways:
>>
>> iMac:$ mpdcheck -s
>> server listening at INADDR_ANY on: iMac.local 65357
>> server has conn on <socket._socketobject object at 0x8c030> from
>> ('192.168.2.2', 43331)
>> server successfully recvd msg from client:
>> hello_from_client_to_server
>>
>> wlaptop:$ mpdcheck -c iMac 65357
>> client successfully recvd ack from server: ack_from_server_to_client
>>
>> I run the mpd ring manually:
>>
>> On iMac:
>>
>> iMac:$ mpd&
>> [1] 13755
>> iMac:$ mpdtrace -l
>> iMac.local_65501 (192.168.2.1)
>>
>> On wlaptop:
>>
>> wlaptop:$ mpd -h iMac -p 65501&
>>
>> Then I run a test on the local machine:
>>
>> iMac:$ mpiexec -n 2 /bin/hostname
>> iMac.local
>> wlaptop
>>
>> So far so good. Now I try to run 4 hostname processes, this
>> is when I
>> start having problems:
>>
>> iMac:$ mpiexec -n 4 hostname
>> iMac.local_mpdman_2: conn error in connect_lhs: Operation timed out
>>
>> The command hangs for a while then it prints the timeout message.
>> Lets take a look at the mpd processes:
>>
>> $ ps -A|fgrep mpd
>> 13755 p1 S 0:00.28 python2.3 /opt/local/mpich2/bin/mpd
>> 13805 p1 S 0:00.01 python2.3 /opt/local/mpich2/bin/mpd
>> 13806 p1 S 0:00.01 python2.3 /opt/local/mpich2/bin/mpd
>> iMac:$ mpdtrace -l
>> iMac.local_65501 (192.168.2.1)
>> wlaptop_53313 (127.0.1.1)
>>
>> I have to manually kill the extra mpd on the local machine.
>>
>> On Aug 26, 2008, at 7:11 PM, Rajeev Thakur wrote:
>>
>>> -mpd just specifies the path for mpd on remote hosts (the
>> same path
>>> for all
>>> remote hosts). If it still doesn't work, there may be some problem
>>> with the
>>> networking configuration on the two machines. To debug the
>> problem,
>>> you can
>>> use the mpdcheck utility as described in the installation guide
>>> (all steps).
>>>
>>> Rajeev
>>>
>>>
>>>> -----Original Message-----
>>>> From: owner-mpich-discuss at mcs.anl.gov
>>>> [mailto:owner-mpich-discuss at mcs.anl.gov] On Behalf Of
>> Robert Kubrick
>>>> Sent: Tuesday, August 26, 2008 6:05 PM
>>>> To: mpich-discuss at mcs.anl.gov
>>>> Subject: Re: [mpich-discuss] mpdboot fails
>>>>
>>>> I'm not clear on how --mpd works: I want to specify two
>>>> different paths, one for the local machine and one for the
>>>> remote host (or possibly a number of different remote hosts).
>>>> Here it looks like I can only set one path for all the hosts:
>>>>
>>>> $ mpdboot --verbose --totalnum=2
>>>> --mpd=/usr/local/mpich2/bin/mpd --debug
>>>> debug: starting
>>>> running mpdallexit on iMac.local
>>>> LAUNCHED mpd on iMac.local via
>>>> debug: launch cmd= /usr/local/mpich2/bin/mpd --ncpus=1 -e -d
>>>> debug: mpd on iMac.local on port no_port mpdboot_iMac.local
>>>> (handle_mpd_output 406): from mpd on iMac.local, invalid port info:
>>>> no_port
>>>>
>>>>
>>>> $ mpdboot --verbose --totalnum=2 --debug
>>>> debug: starting
>>>> running mpdallexit on iMac.local
>>>> LAUNCHED mpd on iMac.local via
>>>> debug: launch cmd= /opt/local/mpich2/bin/mpd.py --ncpus=1 -e -d
>>>> debug: mpd on iMac.local on port 62629
>>>> RUNNING: mpd on iMac.local
>>>> debug: info for running mpd: {'ncpus': 1, 'list_port': 62629,
>>>> 'entry_port': '', 'host': 'iMac.local', 'entry_host': '',
>>>> 'ifhn': ''} LAUNCHED mpd on wlaptop via iMac.local
>>>> debug: launch cmd= ssh -x -n -q wlaptop
>>>> '/opt/local/mpich2/bin/ mpd.py -h iMac.local -p 62629
>>>> --ncpus=1 -e -d'
>>>> debug: mpd on wlaptop on port no_port
>>>> mpdboot_iMac.local (handle_mpd_output 406): from mpd on
>>>> wlaptop, invalid port info:
>>>> no_port
>>>>
>>>>
>>>>
>>>>
>>>> On Aug 25, 2008, at 2:20 PM, Rajeev Thakur wrote:
>>>>
>>>>>> The path to mpd on 'wlaptop' is actually a different one than on
>>>>>> iMac.local. How can I specify a different remote path for mpd?
>>>>>
>>>>> With the --mpd option to mpdboot.
>>>>>
>>>>> Rajeev
>>>>>
>>>>>> -----Original Message-----
>>>>>> From: owner-mpich-discuss at mcs.anl.gov
>>>>>> [mailto:owner-mpich-discuss at mcs.anl.gov] On Behalf Of
>>>> Robert Kubrick
>>>>>> Sent: Sunday, August 24, 2008 5:19 PM
>>>>>> To: mpich-discuss at mcs.anl.gov
>>>>>> Subject: [mpich-discuss] mpdboot fails
>>>>>>
>>>>>> mpdboot fails when I try to run with this command:
>>>>>>
>>>>>> # mpdboot --totalnum=2 --verbose -d debug: starting
>>>>>> running mpdallexit on iMac.local
>>>>>> LAUNCHED mpd on iMac.local via
>>>>>> debug: launch cmd= /opt/local/mpich2/bin/mpd.py --ncpus=1 -e -d
>>>>>> debug: mpd on iMac.local on port 61785
>>>>>> RUNNING: mpd on iMac.local
>>>>>> debug: info for running mpd: {'ncpus': 1, 'list_port': 61785,
>>>>>> 'entry_port': '', 'host': 'iMac.local', 'entry_host': '',
>>>> 'ifhn': ''}
>>>>>> LAUNCHED mpd on wlaptop via iMac.local
>>>>>> debug: launch cmd= ssh -x -n -q wlaptop '/opt/local/mpich2/bin/
>>>>>> mpd.py -h iMac.local -p 61785 --ncpus=1 -e -d'
>>>>>> debug: mpd on wlaptop on port no_port mpdboot_iMac.local
>>>>>> (handle_mpd_output 406): from mpd on wlaptop, invalid port info:
>>>>>> no_port
>>>>>>
>>>>>>
>>>>>> The path to mpd on 'wlaptop' is actually a different one than on
>>>>>> iMac.local. How can I specify a different remote path for mpd?
>>>>>>
>>>>>>
>>>>>
>>>>
>>>>
>>>
>>
>>
>
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