[mpich-discuss] MPID_nem_tcp_init(377)... gethostbyname failed, mac (errno 1)

Luis Cebamanos l.cebamanos at epcc.ed.ac.uk
Mon Mar 3 16:24:16 CST 2014


Hi Reuti,

I have done what you suggested and it WORKS with the wireless off

lcebaman at mac~/$  mpiexec -iface lo0 -n 4 ./hello
Hello world from process 0 of 4
Hello world from process 3 of 4
Hello world from process 1 of 4
Hello world from process 2 of 4

What is the problem here then?

Cheers,
Luis
On 3 Mar 2014, at 14:54, Reuti <reuti at staff.uni-marburg.de> wrote:

> Am 03.03.2014 um 11:29 schrieb Luis Cebamanos:
> 
>> I have also noticed that working without any internet connection does not work either.
> 
> Just for curiosity:
> 
> $ mpiexec -iface lo0 -n 4 ./foo
> 
> -- Reuti
> 
> 
>> On 3 Mar 2014, at 09:53, Luis Cebamanos <l.cebamanos at epcc.ed.ac.uk> wrote:
>> 
>>> Hi there,
>>> 
>>> I’ve got more news. The last IP that I showed in my last email it turns out that works OKAY, however now that I am back to the office and working on the wireless, it does not work. And that is the result of nslookup:
>>> 
>>> lcebaman at mac~/Projects/SPRINT$ nslookup localhost
>>> Server:		129.215.205.191
>>> Address:	129.215.205.191#53
>>> 
>>> Name:	localhost.ed.ac.uk
>>> Address: 127.0.0.1
>>> 
>>> lcebaman at mac~/Projects/SPRINT$ nslookup mac
>>> Server:		129.215.205.191
>>> Address:	129.215.205.191#53
>>> 
>>> ** server can't find mac: NXDOMAIN
>>> 
>>> Any thoughts?
>>> 
>>> Cheers,
>>> Luis
>>> 
>>> On 1 Mar 2014, at 19:40, l.cebamanos <l.cebamanos at epcc.ed.ac.uk> wrote:
>>> 
>>>> Well, is not fixed. Its just the one I got here, but it changes. Any ideas of how to fix this?
>>>> 
>>>> -------- Original message --------
>>>> From: Reuti <reuti at staff.uni-marburg.de> 
>>>> Date:01/03/2014  17:38  (GMT+00:00) 
>>>> To: discuss at mpich.org 
>>>> Subject: Re: [mpich-discuss] MPID_nem_tcp_init(377)... gethostbyname failed,
>>>> 	mac (errno 1) 
>>>> 
>>>> Am 01.03.2014 um 17:58 schrieb Luis Cebamanos:
>>>> 
>>>>> Here it is the output of those commands:
>>>>> 
>>>>> lcebaman at mac~/$ nslookup localhost
>>>>> Server:	 192.168.1.1
>>>>> Address:	192.168.1.1#53
>>>>> 
>>>>> Name:	localhost
>>>>> Address: 127.0.0.1
>>>>> 
>>>>> lcebaman at mac~/$ nslookup mac
>>>>> Server:	 192.168.1.1
>>>>> Address:	192.168.1.1#53
>>>>> 
>>>>> Name:	mac
>>>>> Address: 192.168.1.127
>>>> 
>>>> Is this a fixed address you get everytime? You could add it to /etc/hosts.
>>>> 
>>>> Interesting that MPICH throws an error about resolving "mac", although DNS is working.
>>>> 
>>>> -- Reuti
>>>> 
>>>> 
>>>>> lcebaman at mac~/$ hostname
>>>>> mac
>>>>> 
>>>>> 
>>>>> 
>>>>> 
>>>>> On 28 Feb 2014, at 23:35, Reuti <reuti at staff.uni-marburg.de> wrote:
>>>>> 
>>>>>> Am 28.02.2014 um 14:39 schrieb Luis Cebamanos:
>>>>>> 
>>>>>>> Hi Pavan,
>>>>>>> 
>>>>>>> Yes, that is the output:
>>>>>>> 
>>>>>>> $ 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
>>>>>>> fe80::1%lo0	localhost
>>>>>> 
>>>>>> What is the output of:
>>>>>> 
>>>>>> $ nslookup localhost
>>>>>> $ nslookup mac
>>>>>> $ hostname
>>>>>> 
>>>>>> AFAICS your machine has no domainname, otherwise it would show up in the MPICH error message after "mac".
>>>>>> 
>>>>>> -- Reuti
>>>>>> 
>>>>>> 
>>>>>>> On 28/02/14 13:35, Balaji, Pavan wrote:
>>>>>>>> $ 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
>>>>>>>>>> fe80::1%lo0	localhost
>>>>>>> 
>>>>>>> 
>>>>>>> -- 
>>>>>>> The University of Edinburgh is a charitable body, registered in
>>>>>>> Scotland, with registration number SC005336.
>>>>>>> 
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>>>>>> 
>>>>>> _______________________________________________
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>>>>> 
>>>>> The University of Edinburgh is a charitable body, registered in
>>>>> Scotland, with registration number SC005336.
>>>>> _______________________________________________
>>>>> discuss mailing list     discuss at mpich.org
>>>>> To manage subscription options or unsubscribe:
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>>>> 
>>>> _______________________________________________
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>>>> 
>>>> The University of Edinburgh is a charitable body, registered in
>>>> Scotland, with registration number SC005336.
>>>> _______________________________________________
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>>>> https://lists.mpich.org/mailman/listinfo/discuss
>>> 
>>> The University of Edinburgh is a charitable body, registered in
>>> Scotland, with registration number SC005336.
>>> _______________________________________________
>>> discuss mailing list     discuss at mpich.org
>>> To manage subscription options or unsubscribe:
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>> 
>> The University of Edinburgh is a charitable body, registered in
>> Scotland, with registration number SC005336.
>> _______________________________________________
>> discuss mailing list     discuss at mpich.org
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> 
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