What version are you trying to do this with?
Reason I ask: in 1.3.x, we introduced relative node syntax for
specifying hosts to use. This would eliminate the need to create the
hostfiles.
You might do a "man orte_hosts" (assuming you installed the man pages)
and see what it says.
Ralph
On Nov 10, 2009, at 2:46 PM, Tom Rosmond wrote:
I want to run a number of MPI executables simultaneously in a PBS job.
For example on my system I do 'cat $PBS_NODEFILE' and get a list like
this:
n04
n04
n04
n04
n06
n06
n06
n06
n07
n07
n07
n07
n09
n09
n09
n09
i.e, 16 processors on 4 nodes. from which I can parse into file(s) as
desired. If I want to run prog1 on 1 node (4 processors), prog2 on 1
node (4 processors), and prog3 on 2 nodes (8 processors), I think the
syntax will be something like:
mpirun -np 4 --hostfile nodefile1 prog1: \
-np 4 --hostfile nodefile2 prog2: \
-np 8 --hostfile nodefile3 prog3
Where nodefile1, nodefile2, and nodefile3 are the lists extracted from
PBS_NODEFILE. Is this correct? Any suggestion/advice, (e.g. syntax
of
the 'nodefiles'), is appreciated.
T. Rosmond
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