Tag: openmpi

hwloc + lstopo Failing to Generate Topology on Dual-CPU Machine for Open-MPI

I’ve been attempting to setup a dual-cpu workstation (Dell Precision 7820) to run local parallel jobs utilizing openmpi 2.1.1-8 (as preinstalled on Ubuntu 18.04) however it fails to run with the following error: Examining the source code of pci-common.c you can find a comment before the assert(0) line that states nothing should normally reach this point and will abort all

Open MPI error when setting up a cluster with more than 3 hosts

c++ linux openmpi

We cannot run a program in a Open MPI cluster with more than 3 machines. If we run: it works. If we run: We get the following error: Despite of the fact that it looks like a name resolution error, it is not, because slave5 works on the first command. We’ve seen other people reporting the same error without any

Problems running MPI (OpenMPI) app on Linux on ARM

arm linux mpi openmpi

I am trying to follow this tutorial for building and running an MPI application on an ARM based Ubuntu 11.10 system. When installing open-mpi environment on my PC machine, the sample program runs well. However, trying the same on the ARM machine, the terminal hangs up and I need to kill the MPI process from a second terminal in order