task/node distribution

[Stefan Friedel]

Hello,
we are using PBSpro 5.3 and maui 3.2.6 together with mpiexec 0.74  in a Linux/Myri Cluster - 
A user needs to start jobs in a way, that on each of the SMP-nodes (with 2 procs) consecutive processes (MPI IDs) will be spawned, like:
task1 -> node1 proc1
task2 -> node1 proc2
task3 -> node2 proc1
...

At the moment, PBS/maui/mpiexec is spawning this way:
task1 -> node1 proc1
task2 -> node2 proc1
...
taskn -> noden proc1
taskn+1 -> node1 proc2
taskn+2 -> node2 proc2
...

Is it possible to instruct mpiexec to use the PBS nodelist in a way that tasks a spawned _not_ in this round robin manner?
Or is it something I must configure in PBS/maui which I have overlooked (... in the resp. docu; eg. for maui there is a TASKDISTRIBUTION parameter which is not well documented...)?
Thanks for any hint,
Stefan Friedel
-- 
Stefan Friedel  IWR - Zentrale Dienste
Universitaet Heidelberg
stefan.friedel at iwr.uni-heidelberg.de
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