Re: [OMPI users] OpenMPI with infiniband, child processes of mpirun are missing or overlapped on the same cpu

23, 2015, at 11:05 PM, 김건홍(KIM GEON HONG) mailto:geonhong@hhi.co.kr>> wrote: Hello, I tried to run a parallel computation (OpenFOAM) using Open MPI on a HPC connected with infiniband. When I ran a job using mpirun over a couple of nodes (20 cpus per node), the computation w

[OMPI users] OpenMPI with infiniband, child processes of mpirun are missing or overlapped on the same cpu

Hello, I tried to run a parallel computation (OpenFOAM) using Open MPI on a HPC connected with infiniband. When I ran a job using mpirun over a couple of nodes (20 cpus per node), the computation was not accelerated as I expected. For example, I ran the job over 40 cpus on 2 nodes, and I checke