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

[Yida Wang]

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> 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>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 60439-4847apenya at mcs.anl.govwww.mcs.anl.gov/~apenya
>>
>>
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