[mpich-discuss] Does MPICH support launching processes on Intel-MIC from host?

[Min Si]

Have you tried ssh to MIC and check mpiexec.hydra again ? It might be 
different files just using the same path.

Min

(14-5-23 15:48), Yida Wang wrote:
> I don't know how Intel guys implement this. But I think the 
> mpiexec.hydra file they provide is a regular Linux executable file. 
> "file" it returns "mpiexec.hydra: ELF 64-bit LSB executable, x86-64, 
> version 1 (SYSV), dynamically linked (uses shared libs), for GNU/Linux 
> 2.6.9, not stripped".
>
> One need to make sure mpiexec.hydra and pmi_proxy are accessible to 
> MICs before launching processes on MICs from host.
>
>
> On Fri, May 23, 2014 at 4:43 PM, Reuti <reuti at staff.uni-marburg.de 
> <mailto:reuti at staff.uni-marburg.de>> wrote:
>
>     Am 23.05.2014 um 22:38 schrieb Yida Wang:
>
>>     Thank you! That works, but is not very convenient. Can I know why
>>     you guys don't configure mpich to behave as the same as
>>     Intel-MPI? Basically, using Intel-MPI, one can use the same
>>     mpiexec.hydra on both host and Xeon Phi.
>
>     I don't have Intel-MPI, but is it really a binary or a wrapper to
>     two different versions? What does `file mpiexec.hydra` show?
>
>     -- Reuti
>
>
>>     On Fri, May 23, 2014 at 1:18 PM, "Antonio J. Peña"
>>     <apenya at mcs.anl.gov <mailto:apenya at mcs.anl.gov>> wrote:
>>
>>
>>         For that, you have to deploy two installations of MPICH: one
>>         compiled for the host, and the other for the MIC. To make
>>         things easy, place them under the same path in both hosts -
>>         one that is not shared.
>>
>>           Antonio
>>
>>
>>
>>         On 05/22/2014 04:28 PM, Yida Wang wrote:
>>>         Hi Guys,
>>>
>>>         Can MPICH be configured to support launching processes on
>>>         Intel-MIC from the host? I know that there's a way to
>>>         compile MPICH to be running on Intel-MIC only, but how about
>>>         running heterogeneously on both host and Intel-MIC together?
>>>
>>>         My compiled version returned "hydra_pmi_proxy: cannot
>>>         execute binary file" and got stuck when I tried to launch
>>>         processes on Intel-MIC.
>>>
>>>         Thanks,
>>>         YW
>>>
>>>
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>>
>>
>>         -- 
>>         Antonio J. Peña
>>         Postdoctoral Appointee
>>         Mathematics and Computer Science Division
>>         Argonne National Laboratory
>>         9700 South Cass Avenue, Bldg. 240, Of. 3148
>>         Argonne, IL 60439-4847
>>         apenya at mcs.anl.gov  <mailto:apenya at mcs.anl.gov>
>>         www.mcs.anl.gov/~apenya  <http://www.mcs.anl.gov/%7Eapenya>
>>
>>
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