[mpich-discuss] Can't receive messages

[Reuti]

Am 01.01.2014 um 20:25 schrieb Jeff Hammond:

> Isn't the process manager infrastructure hetero-safe? At the very least, ssh-ing "uname -a" around the ring of procs can identify the problem on O(1) cost. 

As there are clusters without `ssh` availability (i.e. MPICH is running tightly integrated in a queuing system), I would put this in the initial startup call to the slave daemons: `hydra_pmi_proxy` could get an additional parameter about the architecture of the machine where `mpiexec` was issued. It could then return instantly with an error code for something like "refuse to participate".

-- Reuti


> Jeff
> 
> Sent from my iPhone
> 
>> On Jan 1, 2014, at 11:33 AM, Pavan Balaji <balaji at mcs.anl.gov> wrote:
>> 
>> 
>> If we detect what the local architecture is, how will we communicate it to other processes without having some infrastructure that is hetergeneous-architecture safe?
>> 
>> — Pavan
>> 
>>> On Jan 1, 2014, at 9:50 AM, Jeff Hammond <jeff.science at gmail.com> wrote:
>>> 
>>> One wonders if MPICH could verify the system was sufficiently homogeneous to function properly during initialization rather than defer detection to an error during communication calls. 
>>> 
>>> Jeff
>>> 
>>> Sent from my iPhone
>>> 
>>>> On Jan 1, 2014, at 8:07 AM, Matthias Neuer <mneuer at web.de> wrote:
>>>> 
>>>> Am 31.12.2013 18:44, schrieb Pavan Balaji:
>>>>> 
>>>>> On Dec 31, 2013, at 10:11 AM, Matthias Neuer <mneuer at web.de> wrote:
>>>>> 
>>>>>>> On 12/31/2013 04:34 PM, Pavan Balaji wrote:
>>>>>>> 
>>>>>>> Are matze-debian and notebook of the same architecture (x86_64 and running the same OS/configuration)?
>>>>>> 
>>>>>> No, notebook is x86_32 on debian stable and matze-debian is x86_64 on debian testing, but I compiled the program for each system separately.
>>>>> 
>>>>> Such heterogeneous configurations are not supported in mpich.
>>>> 
>>>> Ok, thats the problem then. I didn't find that information in the FAQ or
>>>> in the installation manual.
>>>> 
>>>> Thanks for your help.
>>>> Matthias
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>> 
>> --
>> Pavan Balaji
>> http://www.mcs.anl.gov/~balaji
>> 
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