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 <[email protected] <mailto:[email protected]>> 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. Pe�a" <[email protected] <mailto:[email protected]>> 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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