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Just to further show my confusion (since I wrote much of the TM support):
If you get an interactive allocation and then type "mpirun ....", mpirun will execute on the node upon which you are sitting. Jeff's statement is -only- true if you "qsub" the job - i.e., you run it in batch mode.
From your prior notes, I was under the impression you were running interactively. If this is true, then you only need OMPI to be built with TM support on the node which you are interactively working on.
If you are running it in batch mode, then Jeff is correct - you will need OMPI built with TM support on all nodes since you (in general) cannot know which node PBS will launch you on.
Hope that is clear
On Dec 1, 2009, at 7:35 PM, Belaid MOA wrote:
> > Yes, this page is definitely incorrect if you want to run with PBS/TM
> > support -- you definitely need to install with TM support on all nodes.
> > The reason is that PBS will launch your script (and therefore
> > "mpirun") on the first node of the job. This node must have an Open
> > MPI mpirun with TM support so that it can query PBS to get the nodes
> > to launch on, use the TM API to launch processes on the nodes
> > allocated to the job, etc.
> That's exactly the sound logic I understood from OpenMPI documentation but
> I thought the website is reliable in the sense it configured the server node with
> tm support.
> I am very grateful to subscribe to this list. It is one of the most active list I ever saw.
> Thanks a lot Jeff.
> With Best Regards.
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