Top "Openmpi" questions

Open MPI is an open source implementation of the Message Passing Interface, a library for distributed memory parallel programming.

How to determine MPI rank/process number local to a socket/node

Say, I run a parallel program using MPI. Execution command mpirun -n 8 -npernode 2 <prg> launches 8 processes in total. …

mpi parallel-processing openmpi
Error because file libmpi.so.1 missing

I'm using Omnet++ and Veins for simulations and it was working fine until I upgraded from Ubuntu 15 to 16.04 LTS last …

installation runtime-error openmpi
assign two MPI processes per core

How do I assign 2 MPI processes per core? For example, if I do mpirun -np 4 ./application then it should use 2 …

openmpi affinity hyperthreading
Install OpenMPI on Ubuntu 17.10

I am using the following command for OpenMPI installation on Ubuntu 17.10: sudo apt-get install openmpi-bin openmpi-common openssh-client openssh-server libopenmpi1.3 libopenmpi-dbg …

package openmpi installation-package ubuntu-17.10
Location of mpi.h

I have a code on my computer uses Petsc which depends on mpi. On my computer it works well. I …

c++ gcc openmpi petsc
OPEN MPI is not working for me

I have installed MPI and GCC seperatly using yum commands, And now when I use following command: mpic++ first.c …

centos openmpi centos6.5
what does it mean configuring MPI for shared memory?

I have a bit of research related question. Currently I have finished implementation of structure skeleton frame work based on …

parallel-processing mpi shared-memory openmpi message-passing
MPI_ERR_TRUNCATE: On Broadcast

I have an int I intend to broadcast from root (rank==(FIELD=0)). int winner if (rank == FIELD) { winner = something; } MPI_…

c++ mpi broadcast openmpi
Why Do All My Open MPI Processes Have Rank 0?

I'm writing a parallel program using Open MPI. I'm running Snow Leopard 10.6.4, and I installed Open MPI through the homebrew …

macos openmpi homebrew
How to force OpenMPI to use GCC instead of ICC? Is recompiling OpenMPI necessary?

I have a C-code for parallel computing written for gcc, and I want to compile it on a cluster, which …

c gcc compilation icc openmpi