MPI is the Message Passing Interface, a library for distributed memory parallel programming and the de facto standard method for using distributed memory clusters for high-performance technical computing. Questions about using MPI for parallel programming go under this tag; questions on, eg, ...

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ssh keeps asking for a password

I am trying to set up an MPI cluster, following Setting Up an MPICH2 Cluster in Ubuntu tutorial. At the end of step 7, it says that I should not receive a password request, which unfortunately is not ...
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Beowulf cluster hard disk problem

I built a Beowulf cluster using the message passing interface (MPI). When I send a message that contains the path for a specific file in the slave node, the slave can't access its local hard disk to ...
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installing openmpi on Ubuntu 14.04 [duplicate]

I am trying to instlal OpenMPI on my Ubuntu 14.04 LTS following this guide When I run the command sudo apt-get install -y autotools-dev g++ build-essential openmpi1.5-bin openmpi1.5-doc ...
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missing library when running make?

I am trying to install a program on my machine (running Ubuntu 12.04), but I get the following error when I run make: Starting build... Working Directory : /home/laptop/mplabs_test Build Type ...
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Problem running octave with openmpi in juju

I am attempting to use openmpi from octave to start other octave instances on remote machines. When I run the scrip that should start the various processes, it complains about libraries being out of ...
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Rmpi cluster with ubuntu?

Is there a good step by step guide to configure a Rmpi cluster to run parallel code? I found this one but is from 2011. Thanks!
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OpenMpi cluster in Ubuntu 14.04 LTS

I have setup the clsuter as per the guidelines and steps provided on the link https://help.ubuntu.com/community/MpichCluster I am able to login (without entering password) from mater to slave as well ...
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733 views

“cannot find -lmpi*” when compiling openmpi code

I had try to install openmpi 1.8.1 from the source code at Unbuntu 14.04 server. I would like to use mpi for large scale calculation on single machine with multi cores. The simple "Hello world" test ...
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mpi_hello.c return only one processor and an error: does not find mpi.h

The ubuntu recognize the 8 cpu I have in my i7 intel. However running the mpi_hello.c program it reads only one cpu and exit the program with the error that there is no mpi.h directory or file. The ...
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193 views

Multiple hosts password problem using mpirun

So I am running a parallel c++ program by sending jobs from an Ubuntu machine to remote hosts (also Ubuntu), the command line I use on the terminal is something like: mpirun -np 4 --host host1,host2 ...
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OpenMPI Error: unknown option “--tree-spawn”

I am trying to configure two pc for working with openMPI, i installed openmpi and openssh on the PCs but when i execute: mpirun -np 4 -host slave ./a.out i get: [slave-901:07002] Error: unknown ...
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mpdboot and mpdtrace gives Alarm Clock as a result

I try to execute mpdboot -n 2 -f /home/user/mpd.hosts and then mpdtrace However, both of them gives strange result as Alarm clock Can somebody tell me what is wrong with that, please Thanks ...
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Where to find openmpi-doc on my ubuntu 12.04?

I installed openmpi by apt-get install openmpi-doc. I think it is some folder that contain the document on openmpi? where can I find it? I just switched from Windows to Bbuntu, so a lot of things are ...
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382 views

Mpi file not recognized?

I am trying to compile some mpi files on Ubuntu I installed the library using this code sudo apt-get install libcr-dev mpich2 mpich2-doc and tried to compile this simple hello world program /* C ...
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1answer
3k views

Unable to locate package libopenmpi-dev on 12.04

While trying to install open mpi on my Ubuntu 12.04, I am getting error unable to locate package libopenmpi-dev. What to do? $ sudo apt-get install libopenmpi-dev openmpi-bin openmpi-doc unable to ...
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What is the difference MPI vs OpenMP? [closed]

I just want to know the differences between MPI vs OpenMP for a school project I have. I'm new on Ubuntu and i can't find a trustworthy website. I tried so many now. Please help me!