[mpich-discuss] MPICH with heterogeneous architectures

[Andrew Green]

Hello,

I've been trying to use MPICH2 with an application on the Intel Xeon Phi. I have two builds of MPICH2: one host-compatible and one MIC-compatible. So far I have only been able to run either only on the host or only on the MIC; I would ideally like to be able to run on both simultaneously.

I can see what is going wrong: hydra tries to launch a proxy on the MIC which has been compiled for the host and therefore can't be executed. Is there any way to change this default behaviour? I tried changing the launch executable, but it didn't have the effect I wanted.

Thanks for your help,
Andrew
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