Top "Openmpi" questions

Open MPI - mpirun exits with error on simple program

I have recently installed OpenMPI on my computer and when I try to run a simple Hello World program, it …

c mpi openmpi

How to build openmpi with homebrew and gcc-4.9?

By default brew install openmpi uses clang to create its wrapper. I need to specify gcc-4.9(Homebrew installed) for the …

gcc clang homebrew openmpi

Syntax of the --map-by option in openmpi mpirun v1.8

Looking at the following extract from the openmpi manual --map-by <foo> Map to the specified object, defaults to …

mpi openmpi

How to get mpi4py to work on Windows

I'm trying to use mpi4py. I have mpi4py installed from the Anaconda package, and pip install mpi4py …

windows openmpi mpi4py

Is there an easy way to use clang with Open MPI?

OpenMPI strongly recommends using their wrapper compilers. Behind the scenes, their wrapper compiler mpiCC calls gcc (by default?) and adds …

clang openmpi

Processor/socket affinity in openMPI?

I know,there are some basic function in openMPI implementation for mapping the different processes to different cores of different …

mpi cpu core processor openmpi

Test MPI on a cluster

I am learning OpenMPI on a cluster. Here is my first example. I expect the output would show response from …

cluster-computing hpc openmpi pbs torque

OpenMPI MPI_Barrier problems

I having some synchronization issues using the OpenMPI implementation of MPI_Barrier: int rank; int nprocs; int rc = MPI_Init(&…

c mpi openmpi

using MPI with docker containers

I have created a docker image based on Ubuntu 16.04 and with all the dependencies needed to run MPI. It is …

docker docker-compose mpi docker-swarm openmpi

OpenMPI / mpirun or mpiexec with sudo permission

I'm working on a code that work with Epiphany processor (http://www.parallella.org/) and to run Epiphany codes i …

c++ nodes sudo openmpi epiphany