divisor changes, it can cause race conditions I don't want.
Thanks for the feedback from both of you.
Brian Andrus
From: users [mailto:users-boun...@open-mpi.org] On Behalf Of Gilles Gouaillardet
Sent: Thursday, March 17, 2016 4:59 PM
To: Open MPI Users
Subject: Re: [OMPI users] Dynami
Brian,
unlike Ralph, i will assume all your processes are MPI tasks.
at first glance, the MPI philosophy is the other way around :
start with mpirun -np 1 traffic_cop, and then MPI_Comm_spawn("child")
when you need more workers.
that being said, if you are fine with having idle children (e.g.
Hmmm….I haven’t heard of that specific use-case, but I have seen some similar
things. Did you want the processes to be paused, or killed, when you scale
down? Obviously, I’m assuming they are not MPI procs, yes?
I can certainly see a way to make mpirun do it without too much fuss, though it
wou
All,
I have an mpi-based program that has a master process that acts as a 'traffic
cop' in that it hands out work to child processes.
I want to be able to dynamically throttle how many child processes are in use
at any given time.
For instance, if I start it with "mpirun -n 512" I could send a
