[petsc-users] osx error

[Jacob Faibussowitsch]

+1 to this fix, I had similar issues a while back except I was getting the following error during make check (or running any mpi code for that matter) after petsc was built:

Fatal error in PMPI_Init_thread: Other MPI error, error stack:
MPIR_Init_thread(467)..............: 
MPID_Init(177).....................: channel initialization failed
MPIDI_CH3_Init(70).................: 
MPID_nem_init(319).................: 
MPID_nem_tcp_init(171).............: 
MPID_nem_tcp_get_business_card(418): 
MPID_nem_tcp_init(377).............: gethostbyname failed, localhost (errno 3)

Best regards,

Jacob Faibussowitsch
(Jacob Fai - booss - oh - vitch)
Cell: (312) 694-3391

> On Sep 17, 2020, at 17:59, Satish Balay via petsc-users <petsc-users at mcs.anl.gov> wrote:
> 
> Here is a fix:
> 
> echo 127.0.0.1 `hostname` | sudo tee -a /etc/hosts
> 
> Satish
> 
> On Thu, 17 Sep 2020, Matthew Knepley wrote:
> 
>> We should have an option to disable the test.
>> 
>>   Matt
>> 
>> On Thu, Sep 17, 2020 at 5:31 PM Satish Balay via petsc-users <
>> petsc-users at mcs.anl.gov> wrote:
>> 
>>> On Thu, 17 Sep 2020, Mark Adams wrote:
>>> 
>>>> I rebased over master and started getting this error.
>>>> I did reinstall MPICH (brew) recently.
>>>> Any ideas?
>>>> Thanks,
>>>> Mark
>>> 
>>> 
>>> -------------------------------------------------------------------------------
>>> Exception: Your hostname will not work with MPI, perhaps you have VPN
>>> running whose network settings may not play well with MPI or your network
>>> is misconfigured
>>> 
>>> *******************************************************************************
>>> 
>>> 
>>> Ok - this is a new test that got added to check for broken network that
>>> breaks MPI.
>>> 
>>> Here is the check:
>>> 
>>> Executing: ping -c 2 MarksMac-302.local
>>> 
>>> The check says you have broken network settings. [as its not responding to
>>> ping.]
>>> 
>>> Does MPI work fine on this box? You can try disabling this check
>>> (manually) - and do the build, and run
>>> 
>>> Does MPI run fine?
>>> 
>>> Satish
>>> 
>>> 
>>>>>>>>>>>>>> 
>>> 
>>> diff --git a/config/BuildSystem/config/packages/MPI.py
>>> b/config/BuildSystem/config/packages/MPI.py
>>> index 2e130fdcfe..8464de6773 100644
>>> --- a/config/BuildSystem/config/packages/MPI.py
>>> +++ b/config/BuildSystem/config/packages/MPI.py
>>> @@ -267,7 +267,7 @@ shared libraries and run with
>>> --known-mpi-shared-libraries=1')
>>>               if ret != 0:
>>>                 raise RuntimeError(errormessage+" Return code %s\n" % ret)
>>>             except:
>>> -              raise RuntimeError("Exception: "+errormessage)
>>> +              pass
>>>           else:
>>>             self.logPrint("Unable to get result from hostname, skipping
>>> ping check\n")
>>> 
>>> 
>> 
>> 
> 

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