Re: [OMPI users] mpirun --map-by-node

k..Thank you all. That has solved. On Fri, Nov 4, 2016 at 8:24 PM, r...@open-mpi.org wrote: > All true - but I reiterate. The source of the problem is that the > "--map-by node” on the cmd line must come *before* your application. > Otherwise, none of these suggestions will

Re: [OMPI users] How to yield CPU more when not computing (was curious behavior during wait for broadcast: 100% cpu)

Jeff Hammond writes: >> I see sleeping for ‘0s’ typically taking ≳50μs on Linux (measured on >> RHEL 6 or 7, without specific tuning, on recent Intel). It doesn't look >> like something you want in paths that should be low latency, but maybe >> there's something you can