MPD Daemons and MIC?

[j0e]

Hi Again,

The general MPI setup (i.e., Getting Started with Intel® MPI Library) says that MPD Demon needs to running on each node. Since the Phi card is treated as a separate node, one would think that MPD needs to be running on the card.    

Does and MPD demon need to be running on the Phi card?  When I attempt to use mpdboot, there appears to be various files needed that are not on the Phi card (of course, they could be moved or shared, but I have not seen any references on that).

I am still unable to get MPI running on BOTH processor and coprocessor (but can run on each separately, program hangs).  So far, I have looked at all the documents here: http://software.intel.com/en-us/articles/intel-mpi-library-and-intel-xeon-phi-coprocessors, as well as here: http://software.intel.com/en-us/articles/using-the-intel-mpi-library-on-intel-xeon-phi-coprocessor-systems, but I still don't have complete MPI functionality.

Thanks

[TimP]

My basic understanding is the method was changed beginning with mpi 4.1.024 to one where the mpirun command is recommended for launching a job.  It is recommended to copy over or mount the entire /bin/mic and /lib/mic (e.g. to /lib64).  I haven't entirely caught up myself.

[j0e]

OK, Thanks Tim,

I have found my problem.  It appears I had a configuration problem with ssh going from the Phi to the host (i.e., looks like the wrong public keys copied, etc).  I'm setuping up every thing de novo on a CentOS box, and linux is not my first language...so there are some growing pains here.  All appears to be working now wrt Phi, and I can now start working on more interesting problems. 

cheers,

-joe