I can confirm that mpirun will not direct-launch the applications under Torque.
This is done for wireup support - if/when Torque natively supports PMIx, then
we could revisit that design.
Gilles: the benefit is two-fold:
* Torque has direct visibility of the application procs. When we launch vi
Ken,
iirc, and under torque when Open MPI is configure'd with --with -tm
(this is the default, so assuming your torque headers/libs can be found,
you do not even have to specify --with-tm), mpirun does tm_spawn the
orted daemon on all nodes except the current one.
then mpirun and orted will
I am using openmpi version 1.10.2 with Torque 6.0.1.
I launch a job with the following syntax:
qsub -L tasks=2:lprocs=2:maxtpn=1 -I
This starts an interactive job which is using two nodes.
I then use mpirun as follows from the command line of the interactive job.
mpirun -np 4 sleep 6
